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AFE432A3W
  • AFE432A3W

AFE432A3W

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8-bit 300-mA current-source DAC with 10-bit SAR ADC, VDAC, NVM and GPI

Texas Instruments AFE432A3W Product Info

1 April 2026 5

Parameters

Resolution (Bits)

8

Number of DAC channels

2

Interface type

I2C, SPI

Output type

Buffered Voltage, Unbuffered Current

Output voltage range (V)

0 to 5.5

INL (max) (±LSB)

1.25

Settling time (µs)

20

Reference type

Ext, Int

Architecture

String

Rating

Catalog

Features

(x1) PWM, EEPROM, Integrated ADC, Smart DAC

Sample/update rate (Msps)

0.025

Power consumption (typ) (mW)

0.4

Operating temperature range (°C)

-40 to 125

Product type

Smart DAC

Package

DSBGA (YBH)-16-2.56 mm² 1.6 x 1.6

Features

  • Current-source DAC:
    • 1LSB DNL
    • Two ranges: 300mA and 220mA
    • 770mV headroom
  • Dual voltage-output DACs:
    • 1LSB DNL
    • Gains of 1 ×, 1.5 ×, 2 ×, 3 ×, and 4 ×
  • ADC input on channel 1
  • Programmable comparator mode on channel 1
  • High-impedance output when VDD is off
  • High-impedance and resistive pulldown power-down modes
  • 50MHz SPI-compatible interface
  • Automatically detects I2C or SPI
    • 1.62V VIH with VDD = 5.5V
  • General-purpose input/output (GPIO) configurable as multiple functions
  • Predefined waveform generation: sine, cosine, triangular, sawtooth
  • User-programmable nonvolatile memory (NVM)
  • Internal or power-supply as reference
  • Wide operating range:
    • Power supply: 3V to 5.5V
    • Temperature: –40˚C to +125˚C
  • Current-source DAC:
    • 1LSB DNL
    • Two ranges: 300mA and 220mA
    • 770mV headroom
  • Dual voltage-output DACs:
    • 1LSB DNL
    • Gains of 1 ×, 1.5 ×, 2 ×, 3 ×, and 4 ×
  • ADC input on channel 1
  • Programmable comparator mode on channel 1
  • High-impedance output when VDD is off
  • High-impedance and resistive pulldown power-down modes
  • 50MHz SPI-compatible interface
  • Automatically detects I2C or SPI
    • 1.62V VIH with VDD = 5.5V
  • General-purpose input/output (GPIO) configurable as multiple functions
  • Predefined waveform generation: sine, cosine, triangular, sawtooth
  • User-programmable nonvolatile memory (NVM)
  • Internal or power-supply as reference
  • Wide operating range:
    • Power supply: 3V to 5.5V
    • Temperature: –40˚C to +125˚C

Description

The 10-bit AFE532A3W and 8-bit AFE432A3W (AFEx32A3W) are 3-channel, buffered voltage-output, current-output, and ADC-input, smart analog front ends (AFEs). The AFEx32A3W support a current source used for linear control of laser diodes and miniature motors. These devices support Hi-Z power-down mode and Hi-Z output during power-off conditions for voltage output. Channel 1 is configurable as an ADC, voltage-output DAC, or comparator. The voltage-output DACs provide a force-sense option for use as a programmable comparator and current sink. The multifunction GPIO, function generation, and programmable nonvolatile memory (NVM) enable these smart AFEs for processor-less applications and design reuse. These devices automatically detect SPI or I2C interfaces and contain an internal reference.

The AFEx32A3W feature set combined with the tiny package and low power make these smart AFEs an excellent choice for laser diode power control and electro-absorption modulated laser (EML) control in passive optical network (PON), and other industrial laser applications.

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