AD7942BRMZ-RL7

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Analog Devices Inc./Maxim Integrated

14-BIT, 250 KSPS PULSAR®, PSEUDO DIFFERENTIAL ADC IN MSOP/LFCSP

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AD7942BRMZ-RL7

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Analog Devices Inc./Maxim Integrated

14-BIT, 250 KSPS PULSAR®, PSEUDO DIFFERENTIAL ADC IN MSOP/LFCSP

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Description Specifications Series Pricing CAD Documents

Description

General part information

AD7942 Series

The AD7942 is a 14-bit, charge redistribution, successive approximation PulSAR®ADC that operates from a single power supply, VDD, between 2.3 V to 5.5 V. It contains a low power, high speed, 14-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 VREFwith respect to a ground sense, IN−. The reference voltage, VREF, is applied externally and is set up to be the supply voltage. Its power scales linearly with the 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 and provides an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic using a separate supply (VIO).The AD7942 is housed in a 10-lead MSOP or a 10-lead LFCSP package yet fits in the same size footprint as the 8-lead MSOP or SOT-23. Operation for the AD7942 is specified from −40°C to +85°C.APPLICATIONSBattery-powered equipmentData acquisitionInstrumentationMedical instrumentsProcess controls

Technical Specifications

Parameters and characteristics for this part

Specification	AD7942BRMZ-RL7

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	14 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

AD7942 Series

Part	Package Width	Package Name	Package Length	Ratio - ADC	Ratio - S/H	Mounting Type	Number of Inputs	Sampling Rate (Per Second)	Package / Case	Voltage - Supply, Digital (Max)	Voltage - Supply, Digital (Min)	Operating Temperature (Min)	Operating Temperature (Max)	Reference Type	Configuration	Input Type	Number of A/D Converters	Number of Bits	Architecture	Voltage - Supply, Analog (Min)	Voltage - Supply, Analog (Max)	Data Interface	Supplied Contents	Input Range	Utilized IC / Part	Contents	Power (Typ)	Resolution	Sample Rate	Interconnect System	Secondary Attributes	Platform	Function	Type
Analog Devices Inc./Maxim Integrated AD7942BCPZRL7	3 mm	10-LFCSP-WD	3 mm	1	1	Surface Mount	1	250 kHz	10-VFDFN Exposed Pad CSP	5.5 V	2.3 V	-40 °C	85 °C	External	S/H-ADC	Pseudo-Differential	1 count	14 bits	SAR	2.3 V	5.5 V	DSP SPI
Analog Devices Inc./Maxim Integrated EVAL-AD7942SDZ								250 kHz									1 count	14 bits				DSP MICROWIRE™ QSPI™ Serial SPI™	Board(s)	0 ~ VREF	AD7942	Board	12.5 mW
Analog Devices Inc./Maxim Integrated AD7942BRMZ	3 mm	10-MSOP 10-TFSOP	0.118 in	1	1	Surface Mount	1	250 kHz		5.5 V	2.3 V	-40 °C	85 °C	External	S/H-ADC	Pseudo-Differential	1 count	14 bits	SAR	2.3 V	5.5 V	DSP SPI
Analog Devices Inc./Maxim Integrated EVAL-AD7942-PMDZ																									AD7942	Board		14 Bit	250 kSPS	Pmod	SPI Interface(s)	Pmod™	Analog to Digital Converter (ADC)	Data Acquisition
Analog Devices Inc./Maxim Integrated AD7942BRMZ-RL7	3 mm	10-MSOP 10-TFSOP	0.118 in	1	1	Surface Mount	1	250 kHz		5.5 V	2.3 V	-40 °C	85 °C	External	S/H-ADC	Pseudo-Differential	1 count	14 bits	SAR	2.3 V	5.5 V	DSP SPI
Analog Devices Inc./Maxim Integrated AD7942BCPZRL	3 mm	10-LFCSP-WD	3 mm	1	1	Surface Mount	1	250 kHz	10-VFDFN Exposed Pad CSP	5.5 V	2.3 V	-40 °C	85 °C	External	S/H-ADC	Pseudo-Differential	1 count	14 bits	SAR	2.3 V	5.5 V	DSP SPI

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

AD7942BRMZ-RL7 | Datasheet

Tape and Reel Packaging

Package Drawing - 10-Lead MSOP

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

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