PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
ADS8361
AD
S8
36
1
Dual, 500kSPS, 16-Bit, 2 + 2 Channel,
Simultaneous Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
a71 2 SIMULTANEOUS 16-BIT DACs
a71 4 FULLY DIFFERENTIAL INPUT CHANNELS
a71 2µs THROUGHPUT PER CHANNEL
a71 4µs TOTAL THROUGHPUT FOR FOUR CHANNELS
a71 LOW POWER: 150mW
a71 INTERNAL REFERENCE
a71 FLEXIBLE SERIAL INTERFACE
a71 16-BIT UPGRADE TO THE 12-BIT ADS7861
a71 PIN COMPATIBLE WITH THE ADS7861
APPLICATIONS
a71 MOTOR CONTROL
a71 MULTI-AXIS POSITIONING SYSTEMS
a71 3-PHASE POWER CONTROL
DESCRIPTION
The ADS8361 is a dual, 16-bit, 500kSPS, Analog-to-Digital
(A/D) converter with four fully differential input channels grouped
into two pairs for high-speed, simultaneous signal acquisition.
Inputs to the sample-and-hold amplifiers are fully differential
and are maintained differentially to the input of the A/D con-
verter. This provides excellent common-mode rejection of
80dB at 50kHz, which is important in high-noise environments.
The ADS8361 offers a high-speed, dual serial interface and
control inputs to minimize software overhead. The output data
for each channel is available as a 16-bit word. The ADS8361
is offered in SSOP-24 and QFN-32 (5x5) packages and is fully
specified over the –40°C to +85°C operating range.
SAR
Serial
Interface
COMP
CLOCK
A0
M1
M0
CONVST
CS
RD
BUSY
SERIAL DATA B
SERIAL DATA ACDAC
Internal
2.5V
Reference
SHA
CH A0–
CH A0+
REF
IN
CH A1–
CH A1+
SAR
COMP
CDAC
SHA
CH B0–
CH B0+
CH B1–
CH B1+
REF
OUT
ADS8361
SBAS230C – AUGUST 2002 – REVISED SEPTEMBER 2004
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Copyright © 2002-2004, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.