12-bit 200 Ksps Complete Sampling Adc - Analog Devices

The AD678 is a complete, multipurpose 12-bit monolithic Analog-to-digital converter, consisting of a sample-hold ampli- fier (SHA), a Microprocessor compatible bus Interface a voltage reference and Clock generation circuitry. The AD678 is specified for ac (or dynamic) parameters such as S/N+D ratio, THD and IMD which are important in signal processing applications. In addition, the AD678K, B and T grades are fully specified for dc parameters which are important in measurement applications. The AD678 offers a choice of digital Interface formats; the 12 data bits CAN be accessed by a 16-bit bus in a single read opera- tion or by an 8-bit bus in two read operations (8+4), with right or left justification. Data format is straight binary for unipolar mode and twos complement binary for bipolar mode. The input has a full-scale range of 10 V with a full power bandwidth of 1 MHz and a full linear bandwidth of 500 kHz. High input im- pedance (10 M) allows direct connection to unbuffered sources without signal degradation. This product is fabricated on Analog Devices BiMOS process, combining low power CMOS Logic with high precision, low noise bipolar circuits; laser-trimmed thin-film resistors provide high accuracy. The converter utilizes a recursive subranging algorithm which includes error correction and Flash converter circuitry to achieve high speed and resolution. The AD678 operates from +5 V and 12 V supplies and dissipates 560 mW (typ). The AD678 is available in 28-lead plastic DIP, ceramic DIP, and 44-lead J-leaded ceramic surface mount packages. Screening to MIL-STD-883C Class B is also available. By Analog Devices, Inc.
AD678 's PackagesAD678 's pdf datasheet
AD678JN DIP
AD678KN DIP
AD678JD DIP
AD678KD DIP
AD678AD DIP
AD678BD DIP
AD678AJ LCC
AD678BJ LCC
AD678SD DIP
AD678TD DIP




AD678 Pinout will be updated soon..., now you can download the pdf datasheet to check the pinouts !
AD678 circuits will be updated soon..., now you can download the pdf datasheet to check the circuits!

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