AD7656A-1 Series

250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar 16-Bit ADC

Catalog

250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar 16-Bit ADC

Part	Sampling Rate (Per Second)	Number of Bits	Supplied Contents	Data Interface	Input Range	Utilized IC / Part	Number of A/D Converters	Power (Typ) @ Conditions	Features	Number of Inputs	Ratio - S/H:ADC	Input Type	Architecture	Supplier Device Package	Mounting Type	Voltage - Supply, Analog	Voltage - Supply, Digital	Operating Temperature [Max]	Operating Temperature [Min]	Configuration	Reference Type	Package / Case
Analog Devices EVAL-AD7656-1CBZ	250 k	16	Board(s)	Parallel Serial	4 x VREF	AD7656-1	6	140 mW
Analog Devices EVAL-AD7656-1SDZ	250 k	16	Board(s)	Parallel Serial	4 x VREF	AD7656-1	6	140 mW
Analog Devices EVAL-AD7656CBZ	250 k	16	Board(s)	Parallel Serial	4 x VREF	AD7656	6	140 mW
Analog Devices AD7656BSTZ-1-RL	250 k	16		DSP Parallel SPI			6		Simultaneous Sampling True Bipolar	6	1:1	Single Ended	SAR	64-LQFP (10x10)	Surface Mount	5 V	5 V	85 °C	-40 °C	S/H-ADC	External Internal	64-LQFP
Analog Devices AD7656A-1BSTZ-RL	250 k	16		DSP Parallel SPI			6		Simultaneous Sampling True Bipolar	6	1:1	Single Ended	SAR	64-LQFP (10x10)	Surface Mount	5 V	5 V	85 °C	-40 °C	S/H-ADC	External Internal	64-LQFP
Analog Devices AD7656A-1BSTZ	250 k	16		DSP Parallel SPI			6		Simultaneous Sampling True Bipolar	6	1:1	Single Ended	SAR	64-LQFP (10x10)	Surface Mount	5 V	5 V	85 °C	-40 °C	S/H-ADC	External Internal	64-LQFP
Analog Devices AD7656YSTZ-REEL	250 k	16		DSP Parallel SPI			6		Simultaneous Sampling True Bipolar	6	1:1	Single Ended	SAR	64-LQFP (10x10)	Surface Mount	5 V	5 V	125 °C	-40 °C	S/H-ADC	External Internal	64-LQFP
Analog Devices AD7656ABSTZ-RL	250 k	16		DSP Parallel SPI			6		Simultaneous Sampling True Bipolar	6	1:1	Single Ended	SAR	64-LQFP (10x10)	Surface Mount	5 V	5 V	85 °C	-40 °C	S/H-ADC	External Internal	64-LQFP

Catalog

250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar 16-Bit ADC

Key Features

• 6 independent analog-to-digital converters (ADCs)

• True bipolar analog inputs

• Pin-/software-selectable ranges: ±10 V or ±5 V

• Fast throughput rate: 250 kSPS

• iCMOS®process technology

• Low power: 140 mW at 250 kSPS with 5 V supplies

• Wide input bandwidth:86.5 dB SNR at 50 kHz input frequency

• On-chip reference and reference buffers

• Parallel, serial, and daisy-chain interface modes

• High speed serial interface:Serial peripheral interface (SPI)/QSPI™/MICROWIRE®/DSP compatible

• Power-down mode: 100 mW maximum

• 64-lead LQFP

• Improved power supply sequencing (PSS) robustness

Description

The AD7656-1 /AD7657-1/AD7658-1are reduced decoupling pin- and software-compatible versions ofAD7656/AD7657/AD7658. The AD7656-1 / AD7657-1 / AD7658-1 devices contain six 16-/ 14-/12-bit, fast, low power successive approximation ADCs in a package designed on the iCMOS®process (industrial CMOS). iCMOS is a process combining high voltage silicon with submicron CMOS and complementary bipolar technologies. It enables the development of a wide range of high performance analog ICs capable of 33 V operation in a footprint that no previous generation of high voltage parts could achieve. Unlike analog ICs using conventional CMOS processes, iCMOS components can accept bipolar input signals while providing increased performance, which dramatically reduces power consumption and package size.The AD7656-1 / AD7657-1 / AD7658-1 feature throughput rates of up to 250 kSPS. The parts contain low noise, wide bandwidth track-and-hold amplifiers that can handle input frequencies up to 4.5 MHz.The conversion process and data acquisition are controlled using the CONVST signals and an internal oscillator. Three CONVST pins (CONVST A, CONVST B, and CONVST C) allow independent, simultaneous sampling of the three ADC pairs. The AD7656-1 / AD7657-1 / AD7658-1 have a high speed parallel and serial interface, allowing the devices to interface with microprocessors or DSPs. When the serial interface is selected, each part has a daisy-chain feature that allows multiple ADCs to connect to a single serial interface. The AD7656-1 / AD7657-1 / AD7658-1 can accommodate true bipolar input signals in the ±4 × VREFand ±2 × VREFranges. Each AD7656-1 / AD7657-1 / AD7658-1 also contains an on-chip 2.5 V reference.Please visit next generation productAD7606. Recommended for new designs is theAD7656A-1pin for pin compatible device with improved PSS robustness.PRODUCT HIGHLIGHTSSix 16-/14-/12-bit, 250 kSPS ADCs on board.Six true bipolar, high impedance analog inputs.High speed parallel and serial interfaces.Reduced decoupling requirements and reduced bill of materials cost compared with the AD7656 / AD7657 / AD7658 devices.APPLICATIONSPower line monitoring and measuring systemsInstrumentation and control systemsMultiaxis positioning systems