High Speed, µP-Compatible, CMOS, 8-Bit Sampling ADC

The AD7821 is a high-speed, 8-bit, sampling, Analog-to-digital converter that offers improved performance over the popular AD7820. It offers a conversion time of 660 ns (vs. 1.36 s for the AD7820 and 100 kHz signal bandwidth (vs. 6.4 kHz). The sampling instant is better defined and occurs on the falling edge of WR of RD. The provision for a VSS pin (Pin 19) allows the part to operate from 5 V supplies and to digitize bipolar input signals. Alternatively, for unipolar inputs, the VSS pin CAN be grounded and the AD7821 will operate from a single +5 V supply, like the AD7820.
The AD7821 has a built-in track-and-hold function capable of digitizing full-scale signals up to 100 kHz max. It also uses a half-flash conversion technique that eliminates the need to generate a CLK signal for the ADC
The AD7821 is designed with standard Microprocessor control signals (CS, RD, WR, RDY, INT) and latched, three-state data outputs capable of interfacing to high-speed data buses. An overflow output (OFL) is also provided for cascading devices to achieve higher resolution.
The AD7821 is fabricated in Linear-Compatible CMOS (LC2MOS), an advanced, mixed technology process combining precision bipolar circuits with low-power CMOS Logic The part features a low power dissipation of 50 mW.
By Analog Devices, Inc.
AD7821 's PackagesAD7821 's pdf datasheet
5962-89518012A LCC
5962-8951801RA DIP
AD7821BCHIPS
AD7821BQ DIP
AD7821KN PDIP
AD7821KN- PDIP
AD7821KNZ PDIP
AD7821KP PLCC
AD7821KP-REEL PLCC
AD7821KPZ PLCC
AD7821KPZ-REEL PLCC
AD7821KR SOIC
AD7821KR-REEL SOIC
AD7821KRZ SOIC
AD7821KRZ-REEL SOIC
AD7821TCHIPS
AD7821TQ DIP




AD7821 Pinout, Pinouts
AD7821 pinout,Pin out
This is one package pinout of AD7821,If you need more pinouts please download AD7821's pdf datasheet.

AD7821 Application circuits
AD7821 circuits
This is one application circuit of AD7821,If you need more circuits,please download AD7821's pdf datasheet.


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