AD7895ANZ-10

AD7895ANZ-10 is a fast 12-bit ADC that operates from a single +5V supply. The part contains a 3.8µs successive approximation A/D converter, an on-chip track/hold amplifier, an on-chip clock and a high speed serial interface. Output data from the AD7895 is provided via a high speed, serial interface port. This two-wire serial interface has a serial clock input and a serial data output with the external serial clock accessing the serial data from the part. In addition to the traditional dc accuracy specifications such as linearity and full-scale and offset errors, the AD7895 is specified for dynamic performance parameters, including harmonic distortion and signal-to-noise ratio. It features a high sampling rate mode and, for low power applications, a proprietary automatic power-down mode where the part automatically goes into power down once conversion is complete and “wakes up” before the next conversion cycle.

• Single 5V supply operation, high speed, easy-to-use, serial interface
• On-chip track/hold amplifier, high input impedance
• Signal to (noise + distortion) ratio is 70dB minimum at (fIN = 50KHz sine wave, fSAMPLE = 200KHz)
• Relative accuracy is ±1LSB maximum at (VDD = +5V, GND = 0V, REF IN = +2.5V)
• Differential nonlinearity is ±1LSB maximum at (VDD = +5V, GND = 0V, REF IN = +2.5V)
• Input voltage range is ±10V, input resistance 24Kohm minimum
• Track/hold acquisition time is 0.5µs maximum at (VDD = +5V, GND = 0V, REF IN = +2.5V)
• Bipolar zero error ±4LSB maximum at (VDD = +5V, GND = 0V, REF IN = +2.5V)
• Power dissipation is 25µW maximum at (+25°C, VDD = +5V, GND = 0V, REF IN = +2.5V)
• Operating temperature range from -40°C to +85°C, 8-lead plastic DIP package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party