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产品型号ICL7612DCBA的概述

ICL7612DCBA 概述 ICL7612DCBA是一种高精度的集成电路运算放大器，通常应用于各种数据采集、信号调理和控制系统中。它以高电压范围、低噪声、高输入阻抗和高增益等特点而闻名，适合在精密测量和控制应用中使用。该芯片广泛应用于医疗设备、工业自动化、传感器接口等领域，是现代电子设计中不可或缺的组件之一。 ICL7612DCBA 的详细参数 ICL7612DCBA的主要参数如下： 1. 电源电压范围：通常为 ±5V 到 ±15V，能够在相对较大的范围内工作，使其适合多种电源配置。 2. 输入偏置电流：极低的输入偏置电流，通常在100pA的量级，减少了对测量精度的影响。 3. 输入阻抗：达到10^12Ω，确保对信号源的负载效应最小化。 4. 增益带宽积：约为1MHz，适合中频信号处理。 5. 输入共模电压范围：可以达到几乎与电源电压相同的范围，适合大多数应用环境。 6. 输出摆幅：...

产品型号ICL7612DCBA的Datasheet PDF文件预览

ICL7611, ICL7612

Data Sheet

October 1999

File Number 2919.5

1.4MHz, Low Power CMOS Operational

Ampliﬁers

Features

• Wide Operating Voltage Range . . . . . . . . . . . ±1V to ±8V

The ICL761X/762X/764X series is a family of monolithic

CMOS operational ampliﬁers. These devices provide the

designer with high performance operation at low supply

voltages and selectable quiescent currents, and are an ideal

design tool when ultra low input current and low power

dissipation are desired.

• High Input Impedance . . . . . . . . . . . . . . . . . . . . . . 10

Ω

• Programmable Power Consumption. . . . . . Low as 20µW

• Input Current Lower Than BIFETs . . . . . . . . . . . 1pA (Typ)

• Output Voltage Swing . . . . . . . . . . . . . . . . . . . V+ and V-

• Input Common Mode Voltage Range Greater Than Supply

Rails (ICL7612)

The basic amplifier will operate at supply voltages ranging

from ±1V to ±8V, and may be operated from a single

Lithium cell.

Applications

A unique quiescent current programming pin allows setting

of standby current to 1mA, 100µA, or 10µA, with no external

components. This results in power consumption as low as

20µW. The output swing ranges to within a few millivolts of

the supply voltages.

• Portable Instruments

• Telephone Headsets

• Hearing Aid/Microphone Ampliﬁers

• Meter Ampliﬁers

Of particular signiﬁcance is the extremely low (1pA) input

current, input noise current of 0.01pA/√Hz, and 10 Ω input

impedance. These features optimize performance in very

high source impedance applications.

• Medical Instruments

• High Impedance Buffers

Pinouts

The inputs are internally protected. Outputs are fully

protected against short circuits to ground or to either supply.

ICL7611, ICL7612

(PDIP, SOIC)

TOP VIEW

AC performance is excellent, with a slew rate of 1.6V/µs, and

unity gain bandwidth of 1MHz at I = 1mA.

BAL

-IN

+IN

V-

I SET

Because of the low power dissipation, junction temperature

rise and drift are quite low. Applications utilizing these

features may include stable instruments, extended life

designs, or high density packages.

V+

OUT

BAL

Ordering Information

TEMP.

PART

NUMBER

RANGE

( C)

PKG.

NO.

PACKAGE

ICL7611BCPA

ICL7611DCPA

ICL7611DCBA

ICL7611DCBA-T

0 to 70

8 Ld PDIP - B Grade

8 Ld PDIP - D Grade

8 Ld SOIC - D Grade

E8.3

M8.15

8 Ld SOIC - D Grade

Tape and Reel

ICL7612BCPA

ICL7612DCPA

ICL7612DCBA

ICL7612DCBA-T

0 to 70

8 Ld PDIP - B Grade

8 Ld PDIP - D Grade

8 Ld SOIC - D Grade

E8.3

M8.15

8 Ld SOIC - D Grade

Tape and Reel

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

ICL7611, ICL7612

Absolute Maximum Ratings

Thermal Information

Supply Voltage V+ to V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V

Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . V- -0.3 to V+ +0.3V

Differential Input Voltage (Note 1) . . . . . . . . . [(V+ +0.3) - (V- -0.3)]V

Duration of Output Short Circuit (Note 2). . . . . . . . . . . . . . Unlimited

Thermal Resistance (Typical, Note 3)

( C/W)

PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

130

170

Maximum Junction Temperature (Plastic Package) . . . . . . . .150 C

Maximum Storage Temperature Range. . . . . . . . . . -65 C to 150 C

Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300 C

Operating Conditions

(SOIC - Lead Tips Only)

Temperature Range

ICL76XXC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 C to 70 C

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the

device at these or any other conditions above those indicated in the operational sections of this speciﬁcation is not implied.

NOTES:

1. Long term offset voltage stability will be degraded if large input differential voltages are applied for long periods of time.

2. The outputs may be shorted to ground or to either supply, for V

exceeded.

≤10V. Care must be taken to insure that the dissipation rating is not

SUPPLY

3. θ is measured with the component mounted on an evaluation PC board in free air.

Electrical Speciﬁcations

= ±5V, Unless Otherwise Speciﬁed

SUPPLY

ICL7611B, ICL7612B

ICL7611D, ICL7612D

TEST

CONDITIONS

PARAMETER

SYMBOL

TEMP ( C)

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

Input Offset Voltage

≤ 100kΩ

Full

Temperature

∆V /∆T

≤ 100kΩ

µV/ C

Coefficient of V

Input Offset Current

Input Bias Current

Full

0.5

300

1.0

BIAS

Full

400

Common Mode

Voltage Range

(Except ICL7612)

= 10µA

= 100µA

= 1mA

±4.4

±4.2

±3.7

±5.3

+5.3, -5.1

+5.3, -4.5

±4.9

±4.8

±4.9

±4.8

±4.5

±4.3

±4.4

±4.2

±3.7

±5.3

+5.3, -5.1

+5.3, -4.5

±4.9

±4.8

±4.9

±4.8

±4.5

±4.3

CMR

Extended Common

Mode Voltage Range

(ICL7612 Only)

= 10µA

= 100µA

= 1mA

CMR

Output Voltage Swing

= 10µA, R = 1MΩ

OUT

Full

= 100µA, R = 100kΩ

Full

= 1mA, R = 10kΩ

Full

104

Large Signal Voltage

Gain

= ±4.0V, R = 1MΩ,

VOL

= 10µA

Full

= ±4.0V, R = 100kΩ,

102

= 100µA

Full

= ±4.0V, R = 10kΩ,

= 1mA

Full

ICL7611, ICL7612

Electrical Speciﬁcations

= ±5V, Unless Otherwise Speciﬁed (Continued)

SUPPLY

ICL7611B, ICL7612B

ICL7611D, ICL7612D

TEST

CONDITIONS

PARAMETER

SYMBOL

GBW

TEMP ( C)

MIN

TYP

0.044

0.48

1.4

MAX

MIN

TYP

0.044

0.48

1.4

MAX

UNITS

MHz

Ω

Unity Gain Bandwidth

= 10µA

= 100µA

= 1mA

Input Resistance

Common Mode

Rejection Ratio

CMRR

≤ 100kΩ, I = 10µA

≤ 100kΩ, I = 100µA

≤ 100kΩ, I = 1mA

Power Supply

PSRR

≤ 100kΩ, I = 10µA

Rejection Ratio

≤ 100kΩ, I = 100µA

= ±8V to

SUPPLY

±2V)

≤ 100kΩ, I = 1mA

Input Referred Noise

Voltage

= 100Ω, f = 1kHz

100

nV/√Hz

Input Referred Noise

Current

= 100Ω, f = 1kHz

0.01

pA/√Hz

Supply Current

(No Signal, No Load)

SET = +5V, Low Bias

SET = 0V,

0.01

0.1

0.02

0.25

0.01

0.1

0.02

0.25

SUPPLY

Medium Bias

SET = -5V, High Bias

= 100

1.0

120

0.016

0.16

1.6

2.5

1.0

120

0.016

0.16

1.6

2.5

Channel Separation

Slew Rate

O1 O2

= 10µA, R = 1MΩ

V/µs

µs

(A = 1, C = 100pF,

= 100µA, R = 100kΩ

= 8V

)

P-P

= 1mA, R = 10kΩ

Rise Time

(V = 50mV,

= 10µA, R = 1MΩ

= 100µA, R = 100kΩ

µs

C = 100pF)

= 1mA, R = 10kΩ

0.9

µs

Overshoot Factor

= 10µA, R = 1MΩ

(V = 50mV,

= 100µA, R = 100kΩ

C = 100pF)

= 1mA, R = 10kΩ

Electrical Speciﬁcations

= ±1V, I = 10µA, Unless Otherwise Speciﬁed

SUPPLY

ICL7611B, ICL7612B

TEST

CONDITIONS

TEMP

( C)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

Input Offset Voltage

≤ 100kΩ

Full

Temperature Coefficient of V

Input Offset Current

∆V /∆T

≤ 100kΩ

0.5

µV/ C

300

500

Full

Input Bias Current

1.0

BIAS

Full

Common Mode Voltage Range

(Except ICL7612)

±0.6

CMR

ICL7611, ICL7612

Electrical Speciﬁcations

= ±1V, I = 10µA, Unless Otherwise Speciﬁed (Continued)

SUPPLY

ICL7611B, ICL7612B

TEST

CONDITIONS

TEMP

( C)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

Extended Common Mode

Voltage Range (ICL7612 Only)

+0.6 to

-1.1

CMR

Output Voltage Swing

= 1MΩ

Full

±0.98

OUT

±0.96

Large Signal Voltage Gain

= ±0.1V, R = 1MΩ

VOL

Unity Gain Bandwidth

Input Resistance

GBW

0.044

MHz

Ω

Common Mode Rejection Ratio

Power Supply Rejection Ratio

Input Referred Noise Voltage

Input Referred Noise Current

Supply Current

CMRR

PSRR

≤ 100kΩ

= 100Ω, f = 1kHz

100

0.01

nV/√Hz

pA/√Hz

µA

No Signal, No Load

SUPPLY

Slew Rate

= 1, C = 100pF,

0.016

V/µs

= 0.2V

, R = 1MΩ

P-P

Rise Time

= 50mV, C = 100pF R = 1MΩ

µs

Overshoot Factor

= 50mV, C = 100pF, R = 1MΩ

Schematic Diagram

SETTING STAGE

INPUT STAGE

OUTPUT STAGE

V+

900K

BAL

6.3V

BAL

100K

V+

+INPUT

-INPUT

= 9pF

OUTPUT

V-

V+

= 33pF

N11

N10

V-

6.3V

V-

V+

I SET

ICL7611, ICL7612

Application Information

= 10µA, nulling may not be possible with higher values

Static Protection

of V

All devices are static protected by the use of input diodes.

However, strong static ﬁelds should be avoided, as it is

possible for the strong ﬁelds to cause degraded diode

junction characteristics, which may result in increased input

leakage currents.

Frequency Compensation

The ICL7611 and ICL7612 are internally compensated, and

are stable for closed loop gains as low as unity with

capacitive loads up to 100pF.

Latchup Avoidance

Extended Common Mode Input Range

Junction-isolated CMOS circuits employ configurations which

produce a parasitic 4-layer (PNPN) structure. The 4-layer

structure has characteristics similar to an SCR, and under

certain circumstances may be triggered into a low impedance

state resulting in excessive supply current. To avoid this

condition, no voltage greater than 0.3V beyond the supply

rails may be applied to any pin. In general, the op amp

supplies must be established simultaneously with, or before

any input signals are applied. If this is not possible, the drive

circuits must limit input current flow to 2mA to prevent latchup.

The ICL7612 incorporates additional processing which

allows the input CMVR to exceed each power supply rail by

0.1V for applications where V

applications where V

SUPP

≥ ±1.5V. For those

≤ ±1.5V the input CMVR is limited

SUPP

in the positive direction, but may exceed the negative supply

rail by 0.1V in the negative direction (e.g., for V

the input CMVR would be +0.6V to -1.1V).

= ±1V,

SUPPLY

Operation At V

= ±1V

SUPPLY

= ±1V is guaranteed at I = 10µA for

Operation at V

SUPPLY

A and B grades only.

Output swings to within a few millivolts of the supply rails are

achievable for R ≥ 1MΩ. Guaranteed input CMVR is ±0.6V

Choosing the Proper I

The ICL7611 and ICL7612 have a similar I set-up scheme,

which allows the ampliﬁer to be set to nominal quiescent

currents of 10µA, 100µA or 1mA. These current settings

change only very slightly over the entire supply voltage

minimum and typically +0.9V to -0.7V at V

= ±1V. For

SUPPLY

applications where greater common mode range is

desirable, refer to the description of ICL7612 above.

range. The ICL7611/12 have an external I control terminal,

permitting user selection of quiescent current. To set the I

Typical Applications

connect the I terminal as follows:

The user is cautioned that, due to extremely high input

impedances, care must be exercised in layout, construction,

board cleanliness, and supply ﬁltering to avoid hum and

noise pickup.

= 10µA - I pin to V+

= 100µA - I pin to ground. If this is not possible, any

voltage from V+ - 0.8 to V- +0.8 can be used.

= 1mA - I pin to V-

Note that in no case is I shown. The value of I must be

chosen by the designer with regard to frequency response

and power dissipation.

NOTE: The output current available is a function of the quiescent

current setting. For maximum peak-to-peak output voltage swings

into low impedance loads, IQ of 1mA should be selected.

Output Stage and Load Driving Considerations

Each ampliﬁers’ quiescent current ﬂows primarily in the

ICL7612

OUT

output stage. This is approximately 70% of the I settings.

≥10K

This allows output swings to almost the supply rails for

output loads of 1MΩ, 100kΩ, and 10kΩ, using the output

stage in a highly linear class A mode. In this mode,

crossover distortion is avoided and the voltage gain is

maximized. However, the output stage can also be operated

in Class AB for higher output currents. (See graphs under

Typical Operating Characteristics). During the transition from

Class A to Class B operation, the output transfer

FIGURE 1. SIMPLE FOLLOWER (NOTE 4)

ICL7612

OUT

TO CMOS OR

LPTTL LOGIC

100K

characteristic is non-linear and the voltage gain decreases.

Input Offset Nulling

Offset nulling may be achieved by connecting a 25K pot

between the BAL terminals with the wiper connected to V+.

At quiescent currents of 1mA and 100µA the nulling range

NOTE:

4. By using the ICL7612 in this application, the circuit will follow rail

to rail inputs.

provided is adequate for all V

selections; however with

FIGURE 2. LEVEL DETECTOR (NOTE 4)

ICL7611, ICL7612

ICL7611

1µF

ICL7611

OUT

V-

V+

DUTY CYCLE

680kΩ

WAVEFORM GENERATOR

NOTE: Since the output range swings exactly from rail to rail, frequency

and duty cycle are virtually independent of power supply variations.

NOTE: Low leakage currents allow integration times up to several

hours.

FIGURE 3. PHOTOCURRENT INTEGRATOR

FIGURE 4. PRECISE TRIANGLE/SQUARE WAVE GENERATOR

+8V

0.5µF 10K

2.2M

20K

= 125 C

SUCCEED-

ING

V+

V-

10µF

1.8K = 5%

INPUT

STAGE

OUT

ICL7611

SCALE

ADJUST

V+

ICL7611

-8V

COMMON

FIGURE 5. AVERAGING AC TO DC CONVERTER FOR A/D

CONVERTERS SUCH AS ICL7106, ICL7107,

ICL7109, ICL7116, ICL7117

FIGURE 6. BURN-IN AND LIFE TEST CIRCUIT

OUT

BAL

25k

V+

FIGURE 7. V

NULL CIRCUIT

ICL7611, ICL7612

0.2µF

30K

160K

680K

100K

51K

ICL7611

360K

INPUT

0.1µF

0.2µF

0.1µF

OUTPUT

360K

(NOTE 5)

NOTES:

5. Note that small capacitors (25pF to 50pF) may be needed for stability in some cases.

6. The low bias currents permit high resistance and low capacitance values to be used to achieve low frequency cutoff. f = 10Hz, A

= 4,

VCL

Passband ripple = 0.1dB.

FIGURE 8. FIFTH ORDER CHEBYCHEV MULTIPLE FEEDBACK LOW PASS FILTER

Typical Performance Curves

10K

100

= 25 C

V+ - V- = 10V

NO LOAD

NO SIGNAL

= 1mA

NO SIGNAL

= 1mA

= 100µA

= 10µA

II ==110mµA

-50

-25

100

125

SUPPLY VOLTAGE (V)

FREE-AIR TEMPERATURE ( C)

FIGURE 9. SUPPLY CURRENT PER AMPLIFIER vs SUPPLY

VOLTAGE

FIGURE 10. SUPPLY CURRENT PER AMPLIFIER vs FREE-AIR

TEMPERATURE

1000

= 10V

= 8V

SUPP

= ±5V

OUT

= 1MΩ

= 10µA

100

= 100kΩ

= 100µA

= 10kΩ

= 1mA

1.0

0.1

-75

-50

-25

100

125

-50

-25

100

125

FREE-AIR TEMPERATURE ( C)

FIGURE 11. INPUT BIAS CURRENT vs TEMPERATURE

FIGURE 12. LARGE SIGNAL DIFFERENTIAL VOLTAGE GAIN

vs FREE-AIR TEMPERATURE

ICL7611, ICL7612

Typical Performance Curves (Continued)

105

100

= 10V

SUPP

= 25 C

= 15V

SUPP

= 10µA

= 100µA

= 1mA

135

180

PHASE SHIFT

(I = 1mA)

= 10µA

-75

0.1

1.0

100

10K

100K

-50

-25

100

125

FREQUENCY (Hz)

FREE-AIR TEMPERATURE ( C)

FIGURE 13. LARGE SIGNAL FREQUENCY RESPONSE

FIGURE 14. COMMON MODE REJECTION RATIO vs FREE-AIR

TEMPERATURE

100

600

= 25 C

= 10V

= 1mA

SUPP

3V ≤ V

≤ 16V

SUPP

500

400

300

200

100

= 100µA

= 10µA

-75

-50

-25

100

125

100

FREQUENCY (Hz)

10K

100K

FREE-AIR TEMPERATURE ( C)

FIGURE 15. POWER SUPPLY REJECTION RATIO vs FREE-AIR

TEMPERATURE

FIGURE 16. EQUIVALENT INPUT NOISE VOLTAGE vs

FREQUENCY

= 25 C

= 10V

SUPP

= 1mA

= ±8V

SUPP

= 10µA

= 100µA

= -55 C

= 25 C

= ±5V

= 125 C

SUPP

= ±2V

10K

100

100K

10M

10K

100K

10M

FREQUENCY (Hz)

FIGURE 17. OUTPUT VOLTAGE vs FREQUENCY

FIGURE 18. OUTPUT VOLTAGE vs FREQUENCY

ICL7611, ICL7612

Typical Performance Curves (Continued)

= 25 C

= 100kΩ

= 10kΩ

= 100kΩ - 1MΩ

= 2kΩ

= 10kΩ

= 10V

= 1mA

SUPP

-75

-50

-25

100

125

SUPPLY VOLTAGE (V)

FREE-AIR TEMPERATURE ( C)

FIGURE 19. OUTPUT VOLTAGE vs SUPPLY VOLTAGE

FIGURE 20. OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE

0.01

= 1mA

= 10µA

0.1

1.0

= 100µA

= 1mA

SUPPLY VOLTAGE (V)

FIGURE 21. OUTPUT SOURCE CURRENT vs SUPPLY VOLTAGE

FIGURE 22. OUTPUT SINK CURRENT vs SUPPLY VOLTAGE

= 25 C

= 25 C, V

= 10V

SUPP

V+ - V- = 10V

= 1mA

= 10kΩ, C = 100pF

OUTPUT

-2

-4

-6

INPUT

0.1

1.0

100

TIME (µs)

LOAD RESISTANCE (kΩ)

FIGURE 23. OUTPUT VOLTAGE vs LOAD RESISTANCE

FIGURE 24. VOLTAGE FOLLOWER LARGE SIGNAL PULSE

RESPONSE (I = 1mA)

ICL7611, ICL7612

Typical Performance Curves (Continued)

= 25 C, V

= 10V

SUPP

= 25 C, V = 10V

SUPP

= 100kΩ, C = 100pF

= 1MΩ, C = 100pF

OUTPUT

INPUT

-2

-4

-6

-2

-4

-6

INPUT

200

400

600

800

1000

1200

100

120

TIME (µs)

FIGURE 25. VOLTAGE FOLLOWER LARGE SIGNAL PULSE

RESPONSE (I = 100µA)

FIGURE 26. VOLTAGE FOLLOWER LARGE SIGNAL PULSE

RESPONSE (I = 10µA)

All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certiﬁcation.

Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time with-

out notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and

reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result

from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.

For information regarding Intersil Corporation and its products, see web site www.intersil.com

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ICL7612DCBA产品参数

型号:	ICL7612DCBA
是否Rohs认证：	不符合
生命周期：	Transferred
IHS 制造商：	GENERAL ELECTRIC SOLID STATE
包装说明：	SOP, SOP8,.25
Reach Compliance Code：	unknown
风险等级：	5.87
Is Samacsys：	N
放大器类型：	OPERATIONAL AMPLIFIER
架构：	VOLTAGE-FEEDBACK
25C 时的最大偏置电流 (IIB)：	0.00005 µA
频率补偿：	YES
最大输入失调电压：	20000 µV
JESD-30 代码：	R-PDSO-G8
JESD-609代码：	e0
低-偏置：	YES
低-失调：	NO
功能数量：	1
端子数量：	8
最高工作温度：	70 °C
最低工作温度：
封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP
封装等效代码：	SOP8,.25
封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE
电源：	+-1/+-5 V
可编程功率：	YES
认证状态：	Not Qualified
子类别：	Operational Amplifiers
表面贴装：	YES
技术：	CMOS
温度等级：	COMMERCIAL
端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING
端子节距：	1.27 mm
端子位置：	DUAL
Base Number Matches：	1

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