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LTC1096

产品描述Micropower Sampling 8-Bit Serial I/O A/D Converters
文件大小339KB,共28页
制造商Linear ( ADI )
官网地址http://www.analog.com/cn/index.html
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LTC1096概述

Micropower Sampling 8-Bit Serial I/O A/D Converters

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LTC1096/LTC1096L
LTC1098/LTC1098L
Micropower Sampling
8-Bit Serial I/O A/D Converters
FEATURES
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
80µA Maximum Supply Current
1nA Typical Supply Current in Shutdown
8-Pin SO Plastic Package
5V Operation (LTC1096/LTC1098)
3V Operation (LTC1096L/LTC1098L)(2.65V Min)
Sample-and-Hold
16µs Conversion Time
33kHz Sample Rate
±0.5LSB
Total Unadjusted Error Over Temp
Direct 3-Wire Interface to Most MPU Serial Ports and
All MPU Parallel I/O Ports
The LTC
®
1096/LTC1096L/LTC1098/LTC1098L are
micropower, 8-bit A/D converters that draw only 80µA of
supply current when converting. They automatically power
down to 1nA typical supply current whenever they are not
performing conversions. They are packaged in 8-pin SO
packages and have both 3V (L) and 5V versions. These
8-bit, switched-capacitor, successive approximation ADCs
include sample-and-hold. The LTC1096/LTC1096L have a
single differential analog input. The LTC1098/LTC1098L
offer a software selectable 2-channel MUX.
On-chip serial ports allow efficient data transfer to a wide
range of microprocessors and microcontrollers over three
wires. This, coupled with micropower consumption, makes
remote location possible and facilitates transmitting data
through isolation barriers.
These circuits can be used in ratiometric applications or
with an external reference. The high impedance analog
inputs and the ability to operate with reduced spans
(below 1V full scale) allow direct connection to sensors
and transducers in many applications, eliminating the
need for gain stages.
APPLICATI
s
s
s
s
s
s
S
Battery-Operated Systems
Remote Data Acquisition
Battery Monitoring
Battery Gas Gauges
Temperature Measurement
Isolated Data Acquisition
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATI
10µW, S8 Package, 8-Bit A/D
Samples at 200Hz and Runs Off a 5V Battery
1µF
5V
Supply Current vs Sample Rate
1000
T
A
= 25°C
V
CC
= V
REF
= 5V
SUPPLY CURRENT, I
CC
(µA)
MPU
(e.g., 8051)
CS/
V
CC
SHUTDOWN
CLK
+IN
LTC1096
–IN
D
OUT
GND
V
REF
LTC1096/8 • TA01
100
P1.4
P1.3
P1.2
ANALOG INPUT
0V TO 5V RANGE
10
1
0.1
1
10
SAMPLE FREQUENCY, f
SMPL
(kHz)
100
U
LTC1096/98 • TPC03
UO
UO
1
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