AD7894ARZ-2

AD7894 is a fast, 14-bit ADC. The part contains a 5µs 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 device is provided via 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, full-scale and offset errors, the device is also specified for dynamic performance parameters including harmonic distortion and signal-to-noise ratio. The device 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
• On-chip track/hold amplifier
• Track/hold acquisition time is 0.35µs max
• High input impedance
• Low power is 20mW typ
• Total harmonic distortion (THD) is –86dB max
• –3dB small signal bandwidth is 7.5MHz typ at (VDD = +5V ±5%, GND = 0V, REF IN = +2.5V)
• INL is ±2LSB, input voltage is 0V to +2.5V, SNR is 77dB
• Operating temperature range is –40°C to +85°C
• Packaging style is 8-lead narrow body SOIC

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