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产品型号L2722的概述

芯片L2722的概述 L2722是一种广泛应用于低电平音频放大器、伺服控制和无线电发射器的集成电路（IC）。该芯片凭借其良好的电气性能及多功能性，成为了电子工程师们在设计各类音频放大和信号处理系统时的优选元件。L2722具有较低的失真和高增益特性，适合在电池供电应用中使用，其线性度和音质表现也相对优秀，因此在家用音响、车载音响以及专业音频设备中得到了广泛的应用。芯片L2722的详细参数根据L2722的数据手册，该芯片具备以下主要技术参数： - 工作电压: 适应范围从4.5V到28V的直流电压供电。 - 输出功率：在负载为4Ω时，最大输出功率可达2W。 - 输出电流：最大输出电流可达到3A。 - 频率响应：典型频率响应范围在20Hz至20kHz之间。 - 增益：开环增益可达80dB，闭环增益可通过外部电阻设置。 - 失真：总谐波失真（THD）在额定功率输出时低于0.05%。 - 保护...

产品型号L2722的Datasheet PDF文件预览

L2720/2/4

LOW DROP DUAL POWER OPERATIONAL AMPLIFIERS

OUTPUT CURRENT TO 1 A

OPERATES AT LOW VOLTAGES

SINGLE OR SPLIT SUPPLY

LARGE COMMON-MODE AND DIFFEREN-

TIAL MODE RANGE

LOW INPUT OFFSET VOLTAGE

GROUND COMPATIBLE INPUTS

LOW SATURATION VOLTAGE

THERMAL SHUTDOWN

POWERDIP

(8 + 8)

CLAMP DIODE

MINIDIP

(Plastic)

DESCRIPTION

The L2720, L2722 and L2724 are monolithic inte-

grated circuits in powerdip, minidip and SIP-9 pack-

ages, intendedfor use as power operationalampli-

fiers in a wide range of applications including servo

amplifiers and power supplies.

They are particularly indicated for driving, inductive

loads, as motor and finds applications in compact-

disc VCR automotive, etc.

SIP9

ORDERING NUMBERS : L2720 (Powerdip)

L2722 (Minidip)

The high gain and high output power capability pro-

vide superior performance whatever an operational

amplifier/power boostercombination is required.

L2724 (SIP9)

PIN CONNECTIONS (top views)

L2720

L2722

L2724

1/10

November 1996

L2720/2/4

BLOCK DIAGRAM

L2720

L2722

L2724

SCHEMATIC DIAGRAM (one section)

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

V_S

V_i

Supply Voltage

Peak Supply Voltage (50ms)

Input Voltage

V_s

V_i

Differential Input Voltage

DC Output Current

±V_s

I_o

I_p

Peak Output Current (non repetitive)

1.5

P_tot

Power Dissipation at T_amb= 80^oC (L2720), T_amb= 50^oC (L2722)

T_case= 75^oC (L2720)

T_case= 50^oC (L2724)

T_stg, T_j

Storage and Junction Temperature

–40 to 150

^oC

2/10

L2720/2/4

THERMAL DATA

SIP-9

Powerdip

15^oC/W

70^oC/W

Minidip

70^oC/W

100^oC/W

R_{th j-case}Thermal Resistance Junction-case

Max.

10^oC/W

70^oC/W

R_{th j-amb}

Thermal Resistance Junction-ambient

ELECTRICAL CHARACTERISTICS

V_s= 24V, T_amb= 25^oC unless otherwise specified

Symbol

Parameter

Single Supply Voltage

Split Supply Voltage

Test Conditions

Min.

Typ.

Max.

Unit

V_s

± 2

± 14

V_s

V_o=

V_s= 24V

V_s= 8V

I_s

Quiescent Drain Current

I_b

V_os

I_os

Input Bias Current

Input Offset Voltage

Input Offset Current

Slew Rate

0.2

µA

100

V/µs

MHz

Gain-bandwidth Product

Input Resistance

O.L. Voltage Gain

1.2

R_i

500

kΩ

G_v

f = 100Hz

f = 1kHz

e_N

I_N

Input Noise Voltage

200

µV

B = 22Hz to 22kHz

Input Noise Voltage

CMR

SVR

Common Mode Rejection

Supply Voltage Rejection

f = 1kHz

f = 100Hz

R_G= 10kΩ

V_R= 0.5V

V_s= 24V

V_s= ±12V

V_s= ±6V

V_DROP(HIGH)

V_DROP(LOW)

C_s

0.7

V_s= ±2.5V to ±12V I_p= 100mA

1.5

I_p= 500mA

0.3

0.5

V_s= ±2.5V to ±12V I_p= 100mA

I_p= 500mA

Channel Separation

f = 1KHz

R_L= 10Ω

G_v= 30dB

V_s= 24V

V_s= 6V

T_sd

Thermal Shutdown Junction

Temperature

^oC

145

Figure 1 : Quiescent Current vs. Supply Voltage

FIgure 2 : Open Loop Gain vs. Frequency

3/10

L2720/2/4

Figure 3 : Common Mode Rejection vs.

Figure 4 : Output Swing vs. Load Current

(V_S= ± 5 V.

Frequency

Figure 5 : Output Swing vs. Load Current

(V_S= ± 12 V.

Figure 6 : Supply Voltage rejection vs.

Frequency

Figure 7 : ChannelSeparation vs.

Frequency

4/10

L2720/2/4

APPLICATION SUGGESTION

In order to avoid possible instability occuring into fi-

nal stage the usual suggestionsfor thelinear power

stagesare useful, as for instance :

boucherot cell (0.1 to 0.2 µF + 1Ω series) be-

tween outputsand ground or across the load.

With single supply operation,a resistor (1kΩ)

between the output and supply pin can be

necessaryfor stability.

layout accuracy ;

A 100nFcapacitorconnectedbetweensupply

pins and ground ;

Figure 8 : Bidirectional DC Motor Control with µP Compatible Inputs

V_S1= logic supply voltage

Must be V_S2> V_S1

E1, E2 = logic inputs

Figure 9 : Servocontrolfor Compact-disc

Figure 10 : Capstan Motor Control in Video

Recorders

Figure 11 : Motor Current Control Circuit

Note : The input voltage level is compatible with L291 (8 - BIT D/A converter)

5/10

L2720/2/4

Figure 12 : BidirectionalSpeed Control of DC Motors

2R3 . R1

For circuit stability ensure that R_X>

where R_M= internal resistance of motor.

V_S

2R3 R1

The voltage available at the terminals of the motor is V_M= 2 (V −

) + |R_O|. I_Mwhere |R_O| =

R_X

and I_Mis the motor current.

Figure 13 : VHS-VCR Motor Control Circuit

6/10

L2720/2/4

POWERDIP 16 PACKAGE MECHANICAL DATA

inch

TYP.

DIM.

MIN.

0.51

0.85

TYP.

MAX.

MIN.

0.020

0.033

MAX.

1.40

0.055

0.50

0.020

0.38

0.50

20.0

0.015

0.020

0.787

8.80

2.54

0.346

0.100

0.700

17.78

7.10

5.10

0.280

0.201

3.30

0.130

1.27

0.050

7/10

L2720/2/4

MINIDIP PACKAGE MECHANICAL DATA

inch

TYP.

0.130

DIM.

MIN.

TYP.

MAX.

MIN.

MAX.

3.3

0.7

0.028

0.055

0.036

1.39

0.91

1.65

1.04

0.065

0.041

0.5

0.020

0.38

0.5

9.8

0.015

0.020

0.386

8.8

0.346

0.100

0.300

2.54

7.62

7.1

4.8

0.280

0.189

3.3

0.130

0.44

1.6

0.017

0.063

8/10

L2720/2/4

SIP9 PACKAGE MECHANICAL DATA

inch

TYP.

DIM.

MIN.

TYP.

MAX.

7.1

MIN.

MAX.

0.280

0.118

0.90

2.7

0.106

24.8

0.976

0.5

0.020

0.85

1.6

0.033

0.063

0.835

3.3

0.130

0.017

0.052

0.43

1.32

21.2

14.5

2.54

0.571

0.100

0.800

20.32

3.1

0.122

0.685

0.118

0.693

17.6

0.25

0.010

0,702

17.4

17.85

3.2

0.126

0.039

0.15

0.006

SIP9

9/10

L2720/2/4

Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for

the consequences of use of such information nor for any infringement 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 SGS-THOMSON Microelectronics. Specification

mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously

supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems

without express written approval of SGS-THOMSON Microelectronics.

SGS-THOMSON Microelectronics GROUP OF COMPANIES

Australia - Brazil - Canada - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco -

The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.

10/10

配单直通车

首天国际（深圳）科技有限公司服务专线: 0755-82807802/82807803 在线联系:

QQ：528164397 复制

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L2722产品参数

型号:	L2722
是否无铅：	不含铅
是否Rohs认证：	符合
生命周期：	Obsolete
零件包装代码：	DIP
包装说明：	DIP, DIP8,.3
针数：	8
Reach Compliance Code：	compliant
ECCN代码：	EAR99
HTS代码：	8542.33.00.01
Factory Lead Time：	12 weeks
风险等级：	5.81
放大器类型：	OPERATIONAL AMPLIFIER
架构：	VOLTAGE-FEEDBACK
最大平均偏置电流 (IIB)：	1 µA
25C 时的最大偏置电流 (IIB)：	1 µA
标称共模抑制比：	84 dB
频率补偿：	YES
最大输入失调电压：	10000 µV
JESD-30 代码：	R-PDIP-T8
JESD-609代码：	e3
低-偏置：	NO
低-失调：	NO
微功率：	NO
负供电电压上限：
标称负供电电压 (Vsup)：
功能数量：	2
端子数量：	8
最高工作温度：	85 °C
最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY
封装代码：	DIP
封装等效代码：	DIP8,.3
封装形状：	RECTANGULAR
封装形式：	IN-LINE
峰值回流温度（摄氏度）：	NOT SPECIFIED
功率：	YES
电源：	4/28 V
认证状态：	Not Qualified
座面最大高度：	5.08 mm
标称压摆率：	2 V/us
子类别：	Operational Amplifier
最大压摆率：	15 mA
供电电压上限：	28 V
标称供电电压 (Vsup)：	24 V
表面贴装：	NO
技术：	BIPOLAR
温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn)
端子形式：	THROUGH-HOLE
端子节距：	2.54 mm
端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED
标称均一增益带宽：	1200 kHz
最小电压增益：	3160
宽带：	NO
宽度：	7.62 mm
Base Number Matches：	1

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