MAX190BCWG Free samples

General Description 

The MAX190/MAX191 are monolithic, CMOS,12-bit ana-log-to-digital converters(ADCs) featuring differential inputs, track/hold(T/H), internal voltage reference, internal or extemal clock, and parallel or serial uP interface. Both devices have a 7.5us conversion time. The MAX190BCWG has a 5us acquisition time and sampling rate of 76k samples per second(ksps), while the MAX191 has a 2us acquisition time and is guaranteed at 100ksps.

Decoupling capacitors are the only extemal components needed for the power supply and reference. These ADCs operate with either an external reference, or an intemal reference that features an adjustment input for trimming system gain errors.
Both the MAX190BCWG and MAX191operate from a single +5V supply. The MAX191 also operates from dual t5V supplies, allowing ground-referenced bipolar input signals.
Both devices feature a logic power-down input, which reduces the 3mA Vop supply current to 50uA max, including the internal reference current.

The MAX190/MAX191 provide three interface modes: two 8-bit parallel modes, and a serial interface mode that is compatible with SPl, QSPI and Microwire'M serial-inter-face standards.

Features

◆12-Bit Resolution,1/2LSB Linearity
◆+5V or t5V Operation(MAX191)
◆Built-In Track/Hold
◆Internal Reference with Adjustment Capability
◆Low Power:3mA Operating Mode
               20uA Power-Down Mode
◆100ksps Tested Sampling Rate(MAX191)
◆Serial and 8-Bit Parallel uP Interface
◆24-Pin Narrow DIP and Wide SO Packages

(Picture: Pinout)

(Picture: Diagram)