AD7871 Series

CMOS, Complete 14-Bit, Sampling ADC with Three Data Output Formats

Catalog

CMOS, Complete 14-Bit, Sampling ADC with Three Data Output Formats

Part	Sampling Rate (Per Second)	Configuration	Data Interface	Number of A/D Converters	Ratio - S/H:ADC	Number of Bits	Number of Inputs	Mounting Type	Architecture	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Input Type	Voltage - Supply, Analog	Reference Type	Voltage - Supply, Digital	Package / Case	Package / Case	Package / Case
Analog Devices AD7871JPZ	83k	S/H-ADC	Parallel SPI	1	1:1	14	1	Surface Mount	SAR	28-PLCC (11.51x11.51)	70 °C	0 °C	Single Ended	5 V	Internal	5 V	28-LCC (J-Lead)
Analog Devices AD7871JPZ-REEL	83k	S/H-ADC	Parallel SPI	1	1:1	14	1	Surface Mount	SAR	28-PLCC (11.51x11.51)	70 °C	0 °C	Single Ended	5 V	Internal	5 V	28-LCC (J-Lead)
Analog Devices AD7871JP-REEL	83k	ADC	Parallel Serial	1	0:1	14	1	Surface Mount	SAR	28-PLCC (11.51x11.51)	70 °C	0 °C	Single Ended	5 V	Internal	5 V	28-LCC (J-Lead)
Analog Devices AD7871TQ	83k	S/H-ADC	Parallel SPI	1	1:1	14	1	Through Hole	SAR	28-CDIP	125 °C	-55 °C	Single Ended	5 V	Internal	5 V	28-CDIP	15.24 mm	0.6 in
Analog Devices AD7871JP	83k	S/H-ADC	Parallel SPI	1	1:1	14	1	Surface Mount	SAR	28-PLCC (11.51x11.51)	70 °C	0 °C	Single Ended	5 V	Internal	5 V	28-LCC (J-Lead)
Analog Devices AD7871KPZ	83k	S/H-ADC	Parallel SPI	1	1:1	14	1	Surface Mount	SAR	28-PLCC (11.51x11.51)	70 °C	0 °C	Single Ended	5 V	Internal	5 V	28-LCC (J-Lead)
Analog Devices AD7871KP	83k	S/H-ADC	Parallel SPI	1	1:1	14	1	Surface Mount	SAR	28-PLCC (11.51x11.51)	70 °C	0 °C	Single Ended	5 V	Internal	5 V	28-LCC (J-Lead)

Catalog

CMOS, Complete 14-Bit, Sampling ADC with Three Data Output Formats

Key Features

• Complete monolithic 14-bit ADC

• Twos complement coding

• Parallel, byte, and serial digital interface

• 80 dB SNR at 10 kHz input frequency

• 57 ns data access time

• Low power: 50 mW typ

• 83 kSPS throughput rate

Description

The AD7871 /AD7872are fast, complete, 14-bit analog-to-digital converters (ADC). They consist of a track-and-hold amplifier, successive approximation ADC, 3 V buried Zener reference, and versatile interface logic. The ADC features a self-contained, laser trimmed internal clock, so no external clock timing components are required. The on-chip clock may be overridden to synchronize ADC operation to the digital system for minimum noise.The AD7871 offers a choice of three data output formats: a single, parallel, 14-bit word; two 8-bit bytes or a 14-bit serial data stream. The AD7872 is a serial output device only. The two parts are capable of interfacing to all modern microprocessors and digital signal processors.The AD7871 / AD7872 operate from ±5 V power supplies, accept bipolar input signals of ±3 V and can convert full power signals up to 41.5 kHz.In addition to the traditional dc accuracy specifications, the AD7871 / AD7872 are also fully specified for dynamic performance parameters including distortion and signal-to-noise ratio.Both devices are fabricated in Analog Devices, Inc., LC2MOS mixed technology process. The AD7871 is available in 28-pin PDIP, PLCC, and CERDIP packages. The AD7872 is available in a 16-pin PDIP, CERDIP, and SOIC packages.