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LTC1196-2BC PDF预览

LTC1196-2BC

更新时间: 2024-11-07 22:39:47
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
28页 449K
描述
8-Bit, SO-8, 1MSPS ADCs with Auto-Shutdown Options

LTC1196-2BC 数据手册

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LTC1196/LTC1198  
8-Bit, SO-8, 1MSPS ADCs with  
Auto-Shutdown Options  
U
DESCRIPTIO  
EATURE  
High Sampling Rates: 1MHz (LTC1196)  
750kHz (LTC1198)  
Low Cost  
SO-8 Plastic Package  
Single Supply 3V and 5V Specifications  
Low Power: 10mW at 3V Supply  
50mW at 5V Supply  
Auto-Shutdown: 1nA Typical (LTC1198)  
±1/2LSB Total Unadjusted Error over Temperature  
3-Wire Serial I/O  
1V to 5V Input Span Range (LTC1196)  
Converts 1MHz Inputs to 7 Effective Bits  
Differential Inputs (LTC1196)  
2-Channel MUX (LTC1198)  
S
F
The LTC1196/LTC1198 are 600ns, 8-bit A/D 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 typical supply current of 1nA whenever it is not perform-  
ing conversions. These 8-bit switched-capacitor succes-  
sive approximation ADCs include sample-and-holds. The  
LTC1196 has a differential analog input; the LTC1198  
offers a software selectable 2-channel MUX.  
The 3-wire serial I/O, SO-8 packages, 3V operation and  
extremely high sample rate-to-power ratio make these  
ADCs an ideal choice for compact, high speed systems.  
TheseADCscanbeusedinratiometricapplicationsorwith  
external references. The high impedance analog inputs  
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.  
O U  
PPLICATI  
S
A
High Speed Data Acquisition  
Disk Drives  
Portable or Compact Instrumentation  
Low Power or Battery-Operated Systems  
The A grade devices are specified with total unadjusted  
error of ±1/2LSB maximum over temperature.  
U
O
TYPICAL APPLICATI  
Single 5V Supply, 1MSPS, 8-Bit Sampling ADC  
Effective Bits and S/(N + D) vs Input Frequency  
8
7
6
5
4
3
2
1
0
50  
44  
1µF  
5V  
V
= V = 2.7V  
CC  
REF  
f
f
= 383kHz (LTC1196)  
= 287kHz (LTC1198)  
SMPL  
SMPL  
V
= V = 5V  
CC  
REF  
f
= 1MHz (LTC1196)  
1
2
3
4
8
7
6
5
SMPL  
CS  
V
CC  
f
= 750kHz (LTC1198)  
SMPL  
SERIAL DATA LINK TO  
ASIC, PLD, MPU, DSP,  
OR SHIFT REGISTERS  
+IN LTC1196 CLK  
(SO-8)  
ANALOG INPUT  
0V TO 5V RANGE  
–IN  
D
OUT  
GND  
V
REF  
1196/98 TA01  
T
= 25°C  
A
1k  
10k  
100k  
1M  
INPUT FREQUENCY (Hz)  
1196/98 G24  
1

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