AMC7812B_14 Datasheet, PDF (1/93 Pages) Texas Instruments – 12-Bit Analog Monitoring and Control Solution with Multichannel ADC, DACs, and Temperature Sensors

AMC7812B
www.ti.com
SBAS625A – SEPTEMBER 2013 – REVISED SEPTEMBER 2013
12-Bit Analog Monitoring and Control Solution
with Multichannel ADC, DACs, and Temperature Sensors
Check for Samples: AMC7812B
FEATURES
1
•2345 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 I²C-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
APPLICATIONS
• RF Power Amplifier Control in Base Stations
• Test and Measurement
• Industrial Control
• General Analog Monitoring and Control
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
www.ti.com/amc for more information.
ADC-REF-IN/CMP
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
CH9
CH10
CH11
CH12
CH13
CH14
CH15
D1+ GPIO-5
D1- GPIO-4
D2+ GPIO-7
D2- GPIO-6
GPIO-3
GPIO-0
ALARM
AMC7812B
Reference
(2.5V)
ADC
Trigger
Control/Limits/Status
Registers
Remote
Temperature
Sensor
Driver
Local
Temperature
Sensor
GPIO Controller
Out-of-Range
Alarms
DAC-0
REF-OUT
REF-DAC
DAC0-OUT
DAC1-OUT
DAC2-OUT
DAC3-OUT
DAC4-OUT
DAC5-OUTDAC6-OUT
DAC7-OUTDAC8-OUT
DAC9-OUTDAC10-OUT
DAC11-OUT
DAC-11
LOAD-DAC
DACs Clear Logic
DAC-CLR-0
DAC-CLR-1
RESET
DAV
Control
Logic
Serial Interface Register and Control
(SPI/I²C)
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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.
2
SPI, QSPI are trademarks of Motorola, Inc.
3
MICROWIRE is a trademark of National Semiconductor.
4
All other trademarks are the property of their respective owners.
5
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.
Copyright © 2013, Texas Instruments Incorporated