AMC7932 32-Channel, 12-Bit Analog Monitor and Controller With Multichannel ADC,

Bipolar DACs, Temperature Sensor and GPIO Ports

1 Features

• 32 monotonic 12-bit DACs

– Programmable ranges: –10 V to 0 V,

–5 V to 0 V, 0 V to 5 V, and 0 V to 10 V

– High current drive capability

– Autorange detector

• FlexIO pins; ADC and GPIO configurable

– AMC7932: 6 FlexIO pins

– AMC7932F: 5 FlexIO pins

• 12-bit, 250-kSPS SAR ADC

– Input ranges: 0 V to 5 V and 0 V to 2.5 V

– Programmable out-of-range alarms

• General-purpose I/O (GPIO)

• Built-in sequencing features

• Internal 2.5-V reference

• Internal temperature sensor

– Accuracy: ±2.5°C (maximum)

– Resolution: 0.0625°C

• SPI-compatible interface: 1.65-V to 5.5-V

operation

– AMC7932: 3-wire mode

– AMC7932F: 4-wire mode

• Specified temperature range: –40°C to +125°C

• Operating temperature range: –40°C to +150°C

2 Applications

• Macro remote radio unit (RRU)

• Active antenna system mMIMO (AAS)

• Distributed antenna systems (DAS)

• Outdoor backhaul unit

• Radar

3 Description

The AMC7932 is a highly integrated analog monitor

and control device designed for high-density, general-

purpose monitor and control systems. The AMC7932

includes 32 12-bit, digital-to-analog converters (DACs)

with programmable output ranges. The device

also incorporates a multiplexed, 12-bit analog-to-

digital converter (ADC) with programmable threshold

detectors, a temperature sensor, and an internal

reference. The AMC7932 high level of integration

significantly reduces component count and simplifies

closed-loop system designs, thus making it a great

choice for high-density applications where board

space is critical.

The device includes flexible input/output (FlexIO)

pins that can be configured as either analog

inputs to the ADC or as GPIOs with two available

options: AMC7932 (six FlexIO pins) and AMC7932F

(five FlexIO pins). Communication to the device is

performed through a 3-wire (AMC7932) or 4-wire

(AMC7932F) SPI-compatible interface.

The AMC7932 high-integration and wide operating

temperature range make the device an excellent

choice as an all-in-one, bias-control circuit for the

power amplifiers (PA) found in multichannel RF

communication systems. The flexible DAC output

ranges and built-in sequencing features allow the

device to be used as a biasing controller for a large

variety of transistor technologies, such as LDMOS,

GaAs, and GaN.

Device Information

PART NUMBER

PACKAGE(1)

BODY SIZE (NOM)

AMC7932

TQFP (48)

7.00 mm × 7.00 mm

(1)

For all available packages, see the package option

addendum at the end of the data sheet.

2.5-V

Reference

DAC-0

GPIO

Control

3-Wire or

4-Wire

SPI

AMC7932

ADC

DAC-31

Temperature

Sen sor

Simplified Schematic

AMC7932

SLASF17 – NOVEMBER 2021

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.