AMC7924 24-Channel, 12-Bit Analog Monitor and Controller With Multichannel ADC,

Bipolar DACs, Temperature Sensor, and GPIO Ports

1 Features

• 24 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

• 24 inputs, 12-bit SAR ADC

– High sample rate: 250 kSPS

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

– Programmable out-of-range alarms

• 6 FlexIO pins; ADC and GPIO configurable

• Built-in sequencing features

• Internal 2.5-V reference

• Internal temperature sensor

– Accuracy: ±2.5°C, maximum

– Resolution: 0.0625°C

• 4-wire, SPI-compatible interface

– 1.65-V to 5.5-V operation

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

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

2 Applications

• Active antenna system mMIMO (AAS)

• Macro remote radio unit (RRU)

• Radar

• Data acquisition (DAQ)

2.5-V

Reference

DAC-0

GPIO

Control

4-Wire

SPI

AMC7924

ADC

DAC-23

Temperature

Sensor

Simplified Schematic

3 Description

The AMC7924 is a highly integrated analog monitor

and control device designed for high-density, general-

purpose monitor and control systems. The AMC7924

includes 24 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 AMC7924 high level of integration

significantly reduces component count and simplifies

closed-loop system designs, thus making the device a

great choice for high-density applications where board

space is critical.

The device includes 24 dedicated ADC inputs and

six flexible input/output (FlexIO) pins that can be

configured as either additional analog inputs to the

ADC or as GPIOs. Communication to the device is

performed through a 4-wire, SPI-compatible interface.

The AMC7924 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. The AMC7924 feature set is similarly

beneficial in general-purpose monitor and control

systems.

Device Information

PART NUMBER

PACKAGE(1)

BODY SIZE (NOM)

AMC7924

HTQFP (64)

10.00 mm × 10.00 mm

(1)

For all available packages, see the package option

addendum at the end of the data sheet.

AMC7924

SLASF16 – 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.