SBAS469B
–
MARCH 2009
–
REVISED SEPTEMBER 2011
12-BIT 4-CHANNEL SERIAL-OUTPUT SAMPLING ANALOG-TO-DIGITAL CONVERTER
Check for Samples:
1
FEATURES
Qualified for Automotive Applications
Single Supply: 2.7 V To 5 V
Four-Channel Single-Ended Or Two-Channel
Differential Input
Up To 200-kHz Conversion Rate
±2
LSB Max INL and DNL
No Missing Codes
71-dB Typ SINAD
Serial Interface
Alternate Source For MAX1247
DBQ PACKAGE
(TOP VIEW)
•
•
•
•
•
•
•
•
•
V
CC
CH0
CH1
CH2
CH3
COM
SHDN
V
REF
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
DCLK
CS
DIN
BUSY
DOUT
MODE
GND
V
CC
DESCRIPTION
The ADS7841 is a 4-channel 12-bit sampling analog-to-digital converter (ADC) with a synchronous serial
interface. The resolution is programmable to either 8 bits or 12 bits. Typical power dissipation is 2 mW at a
200-kHz throughput rate and a 5-V supply. The reference voltage (V
REF
) can be varied between 100 mV and
V
CC
, providing a corresponding input voltage range of 0 V to V
REF
. The device includes a shutdown mode that
reduces power dissipation to under 15
μW.
The ADS7841 is specified down to 2.7-V operation.
Low power, high speed, and on-board multiplexer make the ADS7841 ideal for battery-operated systems. The
serial interface also provides low-cost isolation for remote data acquisition. The ADS7841 is available in a
SSOP-16 package.
SAR
DCLK
CH0
CH1
CH2
CH3
COM
V
REF
Four
Channel
Multiplexer
CDAC
Comparator
Serial
Interface
and
Control
CS
SHDN
DIN
DOUT
MODE
BUSY
1
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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©
2009–2011, Texas Instruments Incorporated
TI [ TEXAS INSTRUMENTS ]
