1 Features

1. Small package size:

. 3-mm × 3-mm WQFN

. 8 channels configurable as any combination of:

. Up to 8 analog inputs, digital inputs, or digital

outputs

. GPIOs for I/O expansion:

. Open-drain, push-pull digital outputs

. Wide operating ranges:

. AVDD: 2.35 V to 5.5 V

. DVDD: 1.65 V to 5.5 V

. .40°C to +85°C temperature range

. I2C interface:

. Up to 3.4 MHz (high-speed mode)

. 8 configurable I2C addresses

. Programmable averaging filters:

. Programmable sample size for averaging

. Averaging with internal conversions

. 16-bit resolution for average output

2 Applications

• Mobile robot CPU boards

• Rack servers

• Intra-DC interconnect (metro)

3 Description

The TLA2528 is an easy-to-use, 8-channel,

multiplexed, 12-bit, successive approximation register

analog-to-digital converter (SAR ADC). The eight

channels can be independently configured as either

analog inputs, digital inputs, or digital outputs. The

device has an internal oscillator for ADC conversion

processes.

The TLA2528 communicates via an I2C-compatible

interface and supports standard-mode (100 kHz),

fast-mode (400 kHz), fast-mode plus (1 MHz), and

high-speed mode (3.4 MHz). Up to eight I2C

addresses can be selected for the TLA2528 by

connecting a resistor on the ADDR pin.