ADS7862

Features:

4 INPUT CHANNELS FULLY DIFFERENTIAL INPUTS 2s TOTAL THROUGHPUT PER CHANNEL GUARANTEED NO MISSING CODES PARALLEL INTERFACE 1MHz EFFECTIVE SAMPLING RATE LOW POWER: 40mW


Application

l  MOTOR CONTROL
l  MULTI-AXIS POSITIONING SYSTEMS
l  3-PHASE POWER CONTROL


Pinout




Specifications

Analog Inputs to AGND: Any Channel Input .......... 0.3V to (+V_D  + 0.3V)
                                     REF_{IN D} ............................... 0.3V to (+V  + 0.3V)

Digital Inputs to DGND........................................... 0.3V to (+V_D  + 0.3V)
Ground Voltage Differences: AGND, DGND ........................................±0.3V
                                                +V_D to AGND..........................0.3V to +6V
Power Dissipation............................................................................325mW
Maximum Junction Temperature.................................................... +150°C
Operating Temperature Range ......................................40°C to +85°C
Storage Temperature Range .......................................65°C to +150°C
Lead Temperature (soldering, 10s).............................................. +300°C


Description

The ADS7862 is a dual 12-bit, 500kHz analog-to- digital converter (A/D) with 4 fully differential input channels grouped into two pairs for high speed simulta-
neous signal acquisition. Inputs to the sample-and-hold amplifiers are fully differential and are maintained dif- ferential to the input of the A/D converter. This provides excellent common-mode rejection of 80dB at 50kHz which is important in high noise environments.

The ADS7862 offers parallel interface and control in- puts to minimize software overhead. The output data for each channel is available as a 12-bit word. The ADS7862 is offered in an TQFP-32 package and is full specified over the 40°C to +85°C operating range.