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MAX1241BMJA 参数 Datasheet PDF下载

MAX1241BMJA图片预览
型号: MAX1241BMJA
PDF下载: 下载PDF文件 查看货源
内容描述: + 2.7V ,低功耗, 12位串行ADC的8引脚SO [+2.7V, Low-Power, 12-Bit Serial ADCs in 8-Pin SO]
分类和应用:
文件页数/大小: 16 页 / 281 K
品牌: MAXIM [ MAXIM INTEGRATED PRODUCTS ]
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19-1155; Rev 2; 11/98
KIT
ATION
EVALU
E
BL
AVAILA
+2.7V, Low-Power,
12-Bit Serial ADCs in 8-Pin SO
________________________________Features
o
Single-Supply Operation:
+2.7V to +3.6V (MAX1240)
+2.7V to +5.25V (MAX1241)
o
12-Bit Resolution
o
Internal 2.5V Reference (MAX1240)
o
Small Footprint: 8-Pin DIP/SO Packages
o
Low Power: 3.7µW (73ksps, MAX1240)
3mW (73ksps, MAX1241)
66µW (1ksps, MAX1241)
5µW (power-down mode)
o
Internal Track/Hold
o
SPI/QSPI/MICROWIRE 3-Wire Serial Interface
o
Internal Clock
__________________General Description
The MAX1240/MAX1241 are low-power, 12-bit analog-
to-digital converters (ADCs) available in 8-pin pack-
ages. The MAX1240 operates with a single +2.7V to
+3.6V supply, and the MAX1241 operates with a single
+2.7V to +5.25V supply. Both devices feature a 7.5µs
successive-approximation ADC, a fast track/hold
(1.5µs), an on-chip clock, and a high-speed, 3-wire ser-
ial interface.
Power consumption is only 37mW (V
DD
= 3V) at the
73ksps maximum sampling speed. A 2µA shutdown
mode reduces power at slower throughput rates.
The MAX1240 has an internal 2.5V reference, while the
MAX1241 requires an external reference. The MAX1241
accepts signals from 0V to V
REF
, and the reference
input range includes the positive supply rail. An exter-
nal clock accesses data from the 3-wire interface,
which connects directly to standard microcontroller I/O
ports. The interface is compatible with SPI™, QSPI™,
and MICROWIRE™.
Excellent AC characteristics and very low power com-
bined with ease of use and small package size make
these converters ideal for remote-sensor and data-
acquisition applications, or for other circuits with
demanding power consumption and space require-
ments. The MAX1240/MAX1241 are available in 8-pin
DIP and SO packages.
MAX1240/MAX1241
Ordering Information
PART
MAX1240ACPA
MAX1240BCPA
MAX1240CCPA
MAX1240ACSA
MAX1240BCSA
MAX1240CCSA
MAX1240BC/D
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-
PACKAGE
8 Plastic DIP
8 Plastic DIP
8 Plastic DIP
8 SO
8 SO
8 SO
Dice*
INL
(LSB)
±
1
/
2
±1
±1
±
1
/
2
±1
±1
±1
Applications
Battery-Powered Systems
Portable Data Logging
Isolated Data Acquisition
Process Control
Instrumentation
Ordering Information continued at end of data sheet.
*Dice
are specified at T
A
= +25°C, DC parameters only.
Functional Diagram
V
DD
1
CS
7
8
3
CONTROL
LOGIC
INT
CLOCK
Pin Configuration
TOP VIEW
V
DD
AIN
1
2
8
7
SCLK
CS
DOUT
GND
SCLK
SHDN
OUTPUT
SHIFT
REGISTER
6
DOUT
SHDN 3
REF 4
MAX1240
MAX1241
AIN
2
T/H
2.5V REFERENCE
(MAX1240 ONLY)
12-BIT
SAR
6
5
REF
4
MAX1240
MAX1241
5
GND
DIP/SO
SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.