AMC7832_15 Datasheet, PDF (1/72 Pages) Texas Instruments – AMC7832 12-Bit Analog Monitor and Control Solution with Multi-Channel ADC, Bipolar DACs, Temperature Sensor and GPIO Ports

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AMC7832
SLAS836 – MARCH 2014
AMC7832 12-Bit Analog Monitor and Control Solution
with Multi-Channel ADC, Bipolar DACs, Temperature Sensor and GPIO Ports
1 Features
•1 Twelve Monotonic 12-Bit DACs
– Selectable Ranges: 0 to +5-V, 0 to +10-V and
-10 to 0-V
– High Current Drive Capability: up to ±15-mA
– Selectable Clamp Voltage
• One 12-Bit SAR ADC
– 17 External Analog Inputs
– 12 Bipolar Inputs: -12.5-V to +12.5-V
Range
– 5 High Precision Inputs: 0 to +5-V Range
– Programmable Out-of-Range Alarms
• Internal +2.5-V Reference
• Internal Temperature Sensor
– -40°C to +125°C Operation
– ±2.5°C Accuracy
• Eight General Purpose I/O Ports (GPIOs)
• Low Power SPI Compatible Serial Interface
– 4-Wire Mode, +1.8-V to +5.5-V Operation
• Operating Temperature Range: -40°C to +125°C
• Available in 64-Terminal HTQFP PowerPAD
Package
2 Applications
• Communications Infrastructure:
– Cellular Base Stations
– Microwave Backhaul
– Optical Networks
• General Purpose Monitor & Control
• Data Acquisition Systems
3 Description
The AMC7832 is a highly integrated, low-power,
analog monitoring and control solution that includes a
17-channel, 12-bit analog-to-digital converter (ADC)
with programmable alarms, twelve 12-bit digital-to-
analog converters (DACs) with output ranges of either
0 to +5-V, 0 to +10-V or -10 to 0-V, eight GPIOs,
internal reference and a local temperature sensor
channel. The AMC7832 high level of integration
significantly reduces component count and simplifies
closed-loop system designs.
The AMC7832 is ideal for multichannel applications
where board space, size, and low power are critical.
The AMC7832’s low power, high-integration and wide
operating temperature range make it an ideal all-in-
one, low-cost, bias control circuit for the power
amplifiers (PA) found in multi-channel RF
communication systems. The flexible DAC output
ranges allow the device to be used as a biasing
solution for a large variety of transistor technologies
such as LDMOS, GaAs and GaN. The AMC7832
feature set is similarly beneficial in general purpose
monitor and control systems.
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. Visit
http://www.ti.com/amc for more information.
ORDER NUMBER
AMC7832IPAP
Device Information
PACKAGE
BODY SIZE
HTQFP (64)
10mm x 10mm
4 Power Amp Biasing Diagram
AMC7832
SPI
µC
ALARM
Voltage
Sense
VDD
ADC
Current
Sense
Temp
Sense
Temp
Sensor
RF Out
DAC
VBIAS
POWER AMPLIFIER FET
Functional Diagram
AMC7832
2.5V REFERENCE
ADC
DAC-0
TEMP
SENSOR
DAC-11
RF In
GPIO CONTROL
8 GPIOs
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.