Specification	AD7657YSTZ-REEL

Architecture	SAR
Configuration	S/H-ADC
Data Interface	SPI, DSP, Parallel
Features	Simultaneous Sampling, True Bipolar
Input Type	Single Ended
Mounting Type	Surface Mount
Number of A/D Converters	6 count
Number of Bits	14 bits
Number of Inputs	6
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Package / Case	64-LQFP
Package Length	10 mm
Package Name	64-LQFP
Package Width	10 mm
Ratio - ADC	1
Ratio - S/H	1
Reference Type	External, Internal
Sampling Rate (Per Second)	250 kHz
Voltage - Supply, Analog	5 V
Voltage - Supply, Digital	5 V

AD7657 Series

250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar, 14-Bit A/D Converter

Part	Package Length	Package Name	Package Width	Architecture	Ratio - ADC	Ratio - S/H	Mounting Type	Number of Inputs	Input Type	Number of A/D Converters	Number of Bits	Configuration	Operating Temperature (Min)	Operating Temperature (Max)	Features	Package / Case	Sampling Rate (Per Second)	Voltage - Supply, Digital	Data Interface	Voltage - Supply, Analog	Reference Type	Supplied Contents	Input Voltage (Max)	Input Voltage (Min)	Utilized IC / Part	Contents	Power (Typ)
Analog Devices Inc./Maxim Integrated AD7657BSTZ	10 mm	64-LQFP	10 mm	SAR	1	1	Surface Mount	6	Single Ended	6 count	14 bits	S/H-ADC	-40 °C	85 °C	Simultaneous Sampling True Bipolar	64-LQFP	250 kHz	5 V	DSP Parallel SPI	5 V	External Internal
Analog Devices Inc./Maxim Integrated AD7657YSTZ-REEL	10 mm	64-LQFP	10 mm	SAR	1	1	Surface Mount	6	Single Ended	6 count	14 bits	S/H-ADC	-40 °C	125 °C	Simultaneous Sampling True Bipolar	64-LQFP	250 kHz	5 V	DSP Parallel SPI	5 V	External Internal
Analog Devices Inc./Maxim Integrated EVAL-AD7657-1EDZ										6 count	14 bits						250 kHz		Parallel Serial			Board(s)	10 VDC	-10 V	AD7657-1	Board	140 mW
Analog Devices Inc./Maxim Integrated AD7657BSTZ-1-RL	10 mm	64-LQFP	10 mm	SAR	1	1	Surface Mount	6	Single Ended	6 count	14 bits	S/H-ADC	-40 °C	85 °C	Simultaneous Sampling True Bipolar	64-LQFP	250 kHz	5 V	DSP Parallel SPI	5 V	External Internal
Analog Devices Inc./Maxim Integrated AD7657BSTZ-1	10 mm	64-LQFP	10 mm	SAR	1	1	Surface Mount	6	Single Ended	6 count	14 bits	S/H-ADC	-40 °C	85 °C	Simultaneous Sampling True Bipolar	64-LQFP	250 kHz	5 V	DSP Parallel SPI	5 V	External Internal
Analog Devices Inc./Maxim Integrated AD7657YSTZ	10 mm	64-LQFP	10 mm	SAR	1	1	Surface Mount	6	Single Ended	6 count	14 bits	S/H-ADC	-40 °C	125 °C	Simultaneous Sampling True Bipolar	64-LQFP	250 kHz	5 V	DSP Parallel SPI	5 V	External Internal
Analog Devices Inc./Maxim Integrated AD7657BSTZ-REEL	10 mm	64-LQFP	10 mm	SAR	1	1	Surface Mount	6	Single Ended	6 count	14 bits	S/H-ADC	-40 °C	85 °C	Simultaneous Sampling True Bipolar	64-LQFP	250 kHz	5 V	DSP Parallel SPI	5 V	External Internal

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

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Description

General part information

AD7657 Series

The AD7656-1/AD7657-1/AD7658-1 are reduced decoupling pin- and software-compatible versions of AD7656/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 theiCMOS®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.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