General Description

The MAX1134/MAX1135 are 150ksps, 16-bit ADCs. These serially interfaced ADCs connect directly to SPI™, QSPI™, and MICROWIRE™ devices without external logic. They combine an input scaling network, internal track/hold (T/H), clock, and three general-purpose digital output pins (for external multiplexer or PGA control) in a 20-pin SSOP package. The excellent dynamic performance (THD ≥ 90dB), high speed (150ksps in bipolar mode), and low power (8.0mA) of these ADCs make them ideal for applications such as industrial process control, instrumentation, and medical applications.

Features

♦ 150ksps (Bipolar) and 125ksps (Unipolar) Sampling ADC

♦ 16 Bits, No Missing Codes

♦ 1LSB INL (typ) Guaranteed

♦ -100dB THD

♦ 3.3V Single-Supply Operation

♦ Low-Power Operation 4.5mA (typ) (Unipolar Mode)

♦ 1.2µA Shutdown Mode

♦ Software-Configurable Unipolar and Bipolar Input Ranges

0 to +6V and ±6V (MAX1134)

0 to +2.048V and ±2.048V (MAX1135)

♦ Internal or External Clock

♦ SPI/QSPI/MICROWIRE TMS320-Compatible Serial Interface

♦ Three User-Programmable Logic Outputs

♦ Small 20-Pin SSOP Package

Applications

Industrial Process Control

Industrial I/O Modules

Data-Acquisition Systems

Medical Instruments

Portable and Battery-Powered Equipment