AD7685CRMZRL7

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Analog Devices Inc./Maxim Integrated

ANALOG TO DIGITAL CONVERTER, 16 BIT, 250 KSPS, PSEUDO DIFFERENTIAL, MICROWIRE, QSPI, SPI, SINGLE

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AD7685CRMZRL7

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Analog Devices Inc./Maxim Integrated

ANALOG TO DIGITAL CONVERTER, 16 BIT, 250 KSPS, PSEUDO DIFFERENTIAL, MICROWIRE, QSPI, SPI, SINGLE

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Description Specifications Series Pricing CAD Documents

Description

General part information

AD7685 Series

The AD7685 is a 16-bit, charge redistribution successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDD, between 2.3 V to 5.5 V. It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. The part also contains a low noise, wide bandwidth, short aperture delay, track-and-hold circuit. On the CNV rising edge, it samples an analog input IN+ between 0 V to REF with respect to a ground sense IN−. The reference voltage, REF, is applied externally and can be set up to the supply voltage.Power dissipation scales linearly with throughput.The SPI-compatible serial interface also features the ability, using the SDI input, to daisy chain several ADCs on a single 3-wire bus or provides an optional BUSY indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic using the separate supply VIO.The AD7685 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from −40°C to +85°C.APPLICATIONSBattery-powered equipmentMedical instrumentsMobile communicationsPersonal digital assistants (PDAs)Data acquisitionInstrumentationProcess controls

Technical Specifications

Parameters and characteristics for this part

Specification	AD7685CRMZRL7

Architecture	SAR
Configuration	S/H-ADC
Data Interface	DSP, SPI
Input Type	Pseudo-Differential
Mounting Type	Surface Mount
Number of A/D Converters	1 count
Number of Bits	16 bits
Number of Inputs	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Package Length	0.118 in
Package Name	10-TFSOP, 10-MSOP
Package Width	3 mm
Ratio - ADC	1
Ratio - S/H	1
Reference Type	External
Sampling Rate (Per Second)	250 kHz
Voltage - Supply, Analog (Max)	5.5 V
Voltage - Supply, Analog (Min)	2.3 V
Voltage - Supply, Digital (Max)	5.5 V
Voltage - Supply, Digital (Min)	2.3 V

AD7685 Series

Part	Architecture	Configuration	Operating Temperature (Min)	Operating Temperature (Max)	Package / Case	Mounting Type	Number of Inputs	Data Interface	Sampling Rate (Per Second)	Number of A/D Converters	Package Width	Package Name	Package Length	Ratio - ADC	Ratio - S/H	Reference Type	Number of Bits	Input Type	Voltage - Supply, Digital (Max)	Voltage - Supply, Digital (Min)	Voltage - Supply, Analog (Min)	Voltage - Supply, Analog (Max)
Analog Devices Inc./Maxim Integrated AD7685CCPZRL7	SAR	S/H-ADC	-40 °C	85 °C	10-VFDFN Exposed Pad CSP	Surface Mount	1	DSP SPI	250 kHz	1 count	3 mm	10-LFCSP-WD	3 mm	1	1	External	16 bits	Pseudo-Differential	5.5 V	2.3 V	2.3 V	5.5 V
Analog Devices Inc./Maxim Integrated AD7685CCPZ-R2					10-VFDFN Exposed Pad CSP	Surface Mount					3 mm	10-LFCSP-WD	3 mm				16 bits
Analog Devices Inc./Maxim Integrated AD7685ARMZRL7	SAR	S/H-ADC	-40 °C	85 °C		Surface Mount	1	DSP SPI	250 kHz	1 count	3 mm	10-MSOP 10-TFSOP	0.118 in	1	1	External	16 bits	Pseudo-Differential	5.5 V	2.3 V	2.3 V	5.5 V
Analog Devices Inc./Maxim Integrated AD7685ACPZRL7	SAR	S/H-ADC	-40 °C	85 °C	10-VFDFN Exposed Pad CSP	Surface Mount	1	DSP SPI	250 kHz	1 count	3 mm	10-LFCSP-WD	3 mm	1	1	External	16 bits	Pseudo-Differential	5.5 V	2.3 V	2.3 V	5.5 V
Analog Devices Inc./Maxim Integrated AD7685BCPZRL	SAR	S/H-ADC	-40 °C	85 °C	10-VFDFN Exposed Pad CSP	Surface Mount	1	DSP SPI	250 kHz	1 count	3 mm	10-LFCSP-WD	3 mm	1	1	External	16 bits	Pseudo-Differential	5.5 V	2.3 V	2.3 V	5.5 V
Analog Devices Inc./Maxim Integrated AD7685CCPZRL	SAR	S/H-ADC	-40 °C	85 °C	10-VFDFN Exposed Pad CSP	Surface Mount	1	DSP SPI	250 kHz	1 count	3 mm	10-LFCSP-WD	3 mm	1	1	External	16 bits	Pseudo-Differential	5.5 V	2.3 V	2.3 V	5.5 V
Analog Devices Inc./Maxim Integrated AD7685BCPZRL7	SAR	S/H-ADC	-40 °C	85 °C	10-VFDFN Exposed Pad CSP	Surface Mount	1	DSP SPI	250 kHz	1 count	3 mm	10-LFCSP-WD	3 mm	1	1	External	16 bits	Pseudo-Differential	5.5 V	2.3 V	2.3 V	5.5 V
Analog Devices Inc./Maxim Integrated AD7685ARMZ	SAR	S/H-ADC	-40 °C	85 °C		Surface Mount	1	DSP SPI	250 kHz	1 count	3 mm	10-MSOP 10-TFSOP	0.118 in	1	1	External	16 bits	Pseudo-Differential	5.5 V	2.3 V	2.3 V	5.5 V
Analog Devices Inc./Maxim Integrated AD7685CRMZ	SAR	S/H-ADC	-40 °C	85 °C		Surface Mount	1	DSP SPI	250 kHz	1 count	3 mm	10-MSOP 10-TFSOP	0.118 in	1	1	External	16 bits	Pseudo-Differential	5.5 V	2.3 V	2.3 V	5.5 V
Analog Devices Inc./Maxim Integrated AD7685CRMZRL7	SAR	S/H-ADC	-40 °C	85 °C		Surface Mount	1	DSP SPI	250 kHz	1 count	3 mm	10-MSOP 10-TFSOP	0.118 in	1	1	External	16 bits	Pseudo-Differential	5.5 V	2.3 V	2.3 V	5.5 V

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

UG-340: Evaluation Board for the 10-Lead Family 14-/16-/18-Bit PulSAR ADCs

AD7685: 16-Bit, 250 kSPS PulSAR ADC in MSOP Data Sheet (Rev.D)

Package Drawing - 10-Lead MSOP

8- to 18-Bit SAR ADCs ... From the Leader in High Performance Analog

Accelerate Your Condition Monitoring with Voyager 3

Tape and Reel Packaging