SBAS625A – SEPTEMBER 2013 – REVISED SEPTEMBER 2013
12-Bit Analog Monitoring and Control Solution
with Multichannel ADC, DACs, and Temperature Sensors
Check for Samples:
1
FEATURES
DESCRIPTION
The AMC7812B is a complete analog monitoring and
control solution that includes a 16-channel, 12-bit,
analog-to-digital converter (ADC), twelve 12-bit
digital-to-analog converters (DACs), eight general-
purpose inputs and outputs (GPIOs), two remote
temperature sensor channels, and one local
temperature sensor channel.
The device has an internal +2.5-V reference that can
configure the DAC output voltage to a range of either
0 V to +5 V or 0 V to +12.5 V. An external reference
can be used as well. Typical power dissipation is
95 mW. The AMC7812B is ideal for multichannel
applications where board space, size, and low power
are critical.
The device is available in either a QFN-64 or HTQFP-
64 PowerPAD™ package and is fully specified from
–40°C to +105°C and operational over the full –40°C
to +125°C temperature range.
For applications that require a different channel
count, additional features, or converter resolutions,
Texas Instruments offers a complete family of analog
monitor and control (AMC) products. Refer to
for more information.
ADC-REF-IN/CMP
• 12, 12-Bit DACs with Programmable Outputs:
– 0 V to 5 V
– 0 V to 12.5 V
• DAC Shutdown to User-Defined Level
• 12-Bit, 500-kSPS ADC with 16 Inputs:
– 16 Single-Ended or
Two Differential + 12 Single-Ended
• Two Remote Temperature Sensors:
– ±2°C Accuracy, –40°C to +150°C
• One Internal Temperature Sensor:
– ±2.5°C Accuracy, –40°C to +125°C
• Input Out-of-Range Alarms
• 2.5-V Internal Reference
• Eight General-Purpose Inputs and Outputs
• Configurable I
2
C-Compatible and SPI™
Interface with 5-V and 3-V Logic
• Power-Down Mode
• Wide Operating Temperature Range:
–40°C to +125°C
• Small Packages: 9-mm × 9-mm QFN-64, and
10-mm × 10-mm HTQFP-64
2345
AMC7812B
Single-Ended/
Differential
APPLICATIONS
•
•
•
•
RF Power Amplifier Control in Base Stations
Test and Measurement
Industrial Control
General Analog Monitoring and Control
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
CH9
CH10
CH11
CH12
CH13
CH14
CH15
Reference
(2.5V)
REF-OUT
Single-Ended
REF-DAC
Trigger
ADC
DAC-0
DAC0-OUT
DAC1-OUT
DAC2-OUT
D1+
GPIO-5
Control/Limits/Status
Registers
DAC3-OUT
DAC4-OUT
DAC5-OUTDAC6-OUT
TEMP/GPIO
D1-
D2+
GPIO-4
GPIO-7
Remote
Temperature
Sensor
Driver
Local
Temperature
Sensor
DAC7-OUTDAC8-OUT
DAC9-OUTDAC10-OUT
DAC11-OUT
D2-
GPIO-6
GPIO Controller
DAC-11
GPIO
GPIO-3
GPIO-0
ALARM
LOAD-DAC
Out-of-Range
Alarms
DACs Clear Logic
DAC-CLR-0
DAC-CLR-1
RESET
Control
Logic
Serial Interface Register and Control
(SPI/I
2
C)
DAV
SDO/A1
AGND1
CS/A0
DGND
AV
DD1
SDI/SDA
AGND2
AGND3
A2
SPI/I2C
1
2
3
4
5
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.
PowerPAD is a trademark of Texas Instruments, Incorporated.
SPI, QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor.
All other trademarks are the property of their respective owners.
Copyright © 2013, Texas Instruments Incorporated
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.
SCLK/SCL
AGND4
DV
DD
IOV
DD
CNVT
AV
DD2
AV
CC
TAOS [ TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS ]
