ltc1298cs8-trpbf Linear Technology Corporation, ltc1298cs8-trpbf Datasheet
![no-image](/images/manufacturer_photos/0/3/389/linear_technology_corporation_sml.jpg)
ltc1298cs8-trpbf
Manufacturer Part Number
ltc1298cs8-trpbf
Description
Micropower Sampling 12-bit A/d Converters In S0-8 Packages
Manufacturer
Linear Technology Corporation
Datasheet
1.LTC1298CS8-TRPBF.pdf
(24 pages)
FEATURES
APPLICATIONS
TYPICAL APPLICATIONS
0V TO 5V RANGE
ANALOG INPUT
12-Bit Resolution
8-Pin SOIC Plastic Package
Low Cost
Low Supply Current: 250 A Typ.
Auto Shutdown to 1nA Typ.
Guaranteed 3/4LSB Max DNL
Single Supply 5V to 9V Operation
On-Chip Sample-and-Hold
60 s Conversion Time
Sampling Rates:
I/O Compatible with SPI, Microwire, etc.
Differential Inputs (LTC1286)
2-Channel MUX (LTC1298)
3V Versions Available: LTC1285/LTC1288
Battery-Operated Systems
Remote Data Acquisition
Battery Monitoring
Handheld Terminal Interface
Temperature Measurement
Isolated Data Acquisition
12.5 ksps (LTC1286)
11.1 ksps (LTC1298)
Samples at 200Hz and Runs Off a 5V Supply
1
2
3
4
25 W, S0-8 Package, 12-Bit ADC
V
+IN
–IN
GND
REF
LTC1286
U
CS/SHDN
D
CLK
V
OUT
CC
4.7 F
8
7
6
5
5V
U
SERIAL DATA LINK
N
(e.g., 8051)
P1.4
P1.3
P1.2
LTC1286/98 • TA01
MPU
The LTC1286/LTC1298 are micropower, 12-bit, succes-
sive approximation sampling A/D converters. They typi-
cally draw only 250 A of supply current when converting
and automatically power down to a typical supply current
of 1nA whenever they are not performing conversions.
They are packaged in 8-pin SO packages and operate on
5V to 9V supplies. These 12-bit, switched-capacitor, suc-
cessive approximation ADCs include sample-and-holds.
The LTC1286 has a single differential analog input. The
LTC1298 offers 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 (to
1.5V full scale) allow direct connection to sensors and
transducers in many applications, eliminating the need for
gain stages.
DESCRIPTION
12-Bit A/D Converters In
1000
100
10
Micropower Sampling
Supply Current vs Sample Rate
1
0.1k
T
V
f
CLK
A
CC
= 25°C
= V
= 200kHz
U
REF
SAMPLE FREQUENCY (Hz)
LTC1286/LTC1298
= 5V
1k
S0-8 Packages
10k
LTC1286/98 • TA02
100k
1