The MAX1203BCAP+ is a 5V, 8-channel, serial, 12bit ADC in 20 pin SSOP package. The 12bit data acquisition systems is specifically designed for use in applications with mixed +5V (analogue) and +3V (digital) supply voltages. It combines an 8-channel multiplexer, high-bandwidth track/hold and serial interface with high conversion speed and low power consumption. A 4-wire serial interface connects directly to SPI/ MICROWIRE devices without external logic and a serial strobe output allows direct connection to TMS320 family DSPs. It uses either the internal clock or an external serial interface clock to perform successive approximation analogue to digital conversions. The serial interface operates at up to 2MHz. The MAX1203 features an external reference and a reference-buffer amplifier that simplifies gain trim. It also has a VL pin that is the power supply for the digital outputs. Output logic levels (3V, 3.3V or 5V) are determined by the value of the voltage applied to this pin.
Operates from single +5V or dual ±5V supplies
Operating temperature range from 0°C to 70°C
8 channel single ended or 4 channel differential inputs
User adjustable output logic levels from 2.7V to 5.25V
Low power consumption of 1.5mA (operating mode) and 2μA (power-down mode)
Sampling rate is 133KHz
Hard wired SHDN pin and two software-selectable power-down modes
(EN)
