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LTC1198-2BCS8-PBF PDF预览

LTC1198-2BCS8-PBF

更新时间: 2024-11-08 05:43:39
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
28页 328K
描述
8-Bit, SO-8, 1Msps ADCs with Auto-Shutdown Options

LTC1198-2BCS8-PBF 数据手册

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LTC1196/LTC1198  
8-Bit, SO-8, 1Msps ADCs  
with Auto-Shutdown Options  
FEATURES  
DESCRIPTION  
The LTC®1196ꢀLTC1198 are 600ns, 8-bit AꢀD converters  
with sampling rates up to 1MHz. They are offered in 8-pin  
SO packages and operate on 3V to 6V supplies. Power  
dissipation is only 10mW with a 3V supply or 50mW with  
a 5V supply. The LTC1198 automatically powers down to a  
typicalsupplycurrentof1nAwheneveritisnotperforming  
conversions. These 8-bit switched-capacitor successive  
approximation ADCs include sample-and-holds. The  
LTC1196 has a differential analog input; the LTC1198 of-  
fers a software selectable /-channel MUX.  
n
High Sampling Rates: 1MHz (LTC1196)  
750kHz (LTC1198)  
n
Low Cost  
n
Single Supply 3V and 5V Specifications  
n
Low Power: 10mW at 3V Supply  
50mW at 5V Supply  
n
Auto-Shutdown: 1nA Typical (LTC1198)  
n
1ꢀ/LSB Total Unadjusted Error over Temperature  
n
3-Wire Serial IꢀO  
n
1V to 5V Input Span Range (LTC1196)  
n
Converts 1MHz Inputs to 7 Effective Bits  
The 3-wire serial IꢀO, SO-8 packages, 3V operation and  
extremely high sample rate-to-power ratio make these  
ADCs an ideal choice for compact, high speed systems.  
n
Differential Inputs (LTC1196)  
n
/-Channel MUX (LTC1198)  
n
SO-8 Plastic Package  
These ADCs can be used in ratiometric applications or  
with external references. The high impedance analog in-  
puts and the ability to operate with reduced spans below  
1V full scale (LTC1196) allow direct connection to signal  
sources in many applications, eliminating the need for  
gain stages.  
APPLICATIONS  
n
High Speed Data Acquisition  
n
Disk Drives  
n
Portable or Compact Instrumentation  
n
Low Power or Battery-Operated Systems  
The A grade devices are specified with total unadjusted  
error of 1ꢀ/LSB maximum over temperature.  
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
Single 5V Supply, 1Msps, 8-Bit Sampling ADC  
Effective Bits and S/(N + D) vs Input Frequency  
8
7
6
5
4
3
/
1
0
50  
1μF  
5V  
V
= V = /.7V  
CC  
REF  
44  
f
f
= 383kHz (LTC1196)  
= /87kHz (LTC1198)  
SMPL  
SMPL  
V
= V = 5V  
CC  
REF  
f
= 1MHz (LTC1196)  
SMPL  
1
/
3
4
8
7
6
5
f
= 750kHz (LTC1198)  
CS  
V
SMPL  
CC  
SERIAL DATA LINK TO  
ASIC, PLD, MPU, DSP,  
OR SHIFT REGISTERS  
+IN  
–IN  
GND  
CLK  
ANALOG INPUT  
0V TO 5V RANGE  
LTC1196  
D
OUT  
V
REF  
1196ꢀ98 TA01  
T
= /5°C  
A
1k  
10k  
100k  
1M  
INPUT FREQUENCY (Hz)  
1196ꢀ98 G/4  
119698fa  
1

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