AD7687 Series

16-Bit, 1.5 LSB INL, 250 kSPS PulSAR™Differential ADC in MSOP/QFN

Catalog

16-Bit, 1.5 LSB INL, 250 kSPS PulSAR™Differential ADC in MSOP/QFN

Part	Number of Inputs	Input Type	Sampling Rate (Per Second)	Number of A/D Converters	Mounting Type	Data Interface	Voltage - Supply, Digital [Max]	Voltage - Supply, Digital [Min]	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Reference Type	Voltage - Supply, Analog [Max]	Voltage - Supply, Analog [Min]	Number of Bits	Architecture	Ratio - S/H:ADC	Configuration	Package / Case	Package / Case [x]	Package / Case [x]
Analog Devices AD7687BRMZRL7	1	Differential	250 k	1	Surface Mount	DSP SPI	5.5 V	2.3 V	85 °C	-40 °C	10-MSOP	External	5.5 V	2.3 V	16	SAR	1:1	S/H-ADC	10-MSOP 10-TFSOP	3 mm	0.118 in
Analog Devices AD7687BCPZRL7	1	Differential	250 k	1	Surface Mount	DSP SPI	5.5 V	2.3 V	85 °C	-40 °C	10-LFCSP-WD (3x3)	External	5.5 V	2.3 V	16	SAR	1:1	S/H-ADC	10-VFDFN Exposed Pad CSP
Analog Devices AD7687BRMZ	1	Differential	250 k	1	Surface Mount	DSP SPI	5.5 V	2.3 V	85 °C	-40 °C	10-MSOP	External	5.5 V	2.3 V	16	SAR	1:1	S/H-ADC	10-MSOP 10-TFSOP	3 mm	0.118 in
Analog Devices AD7687BCPZRL	1	Differential	250 k	1	Surface Mount	DSP SPI	5.5 V	2.3 V	85 °C	-40 °C	10-LFCSP-WD (3x3)	External	5.5 V	2.3 V	16	SAR	1:1	S/H-ADC	10-VFDFN Exposed Pad CSP
Analog Devices AD7687BCPZ-R2					Surface Mount						10-LFCSP-WD (3x3)								10-VFDFN Exposed Pad CSP

Catalog

16-Bit, 1.5 LSB INL, 250 kSPS PulSAR™Differential ADC in MSOP/QFN

Key Features

• 16-bit resolution with no missing codes

• Throughput: 250 kSPS

• INL: ±0.4 LSB typ, ±1.5 LSB max (±23 ppm of FSR)

• Dynamic range: 96.5 dB

• SNR: 95.5 dB at 20 kHz

• THD: −118 dB at 20 kHz

• True differential analog input range:±VREF0 V to VREFwith VREFup to VDD on both inputs

• Single-supply 2.3 V to 5.5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface

• No pipeline delay

• Refer to data sheet for additional features.

Description

The AD76871 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 device also contains a low noise, wide bandwidth, short aperture delay track-and-hold circuit. On the CNV rising edge, the AD7687 the samples the voltage difference between IN+ and IN− pins, which can range from −VREFto +VREF. The reference voltage, VREF, is applied externally and can be set up to the supply voltage.The power consumption of the device scales linearly with throughput.The SPI-compatible serial interface also features the ability to daisy-chain several ADCs on a single 3-wire bus and provides an optional BUSY indicator by means of the SDI pin. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic using the separate supply VIO.The AD7687 comes in a 10-lead MSOP or a 10-lead LFCSP with operation specified from −40°C to +85°C.APPLICATIONSBattery-powered equipmentData acquisitionsInstrumentationMedical instrumentsProcess controls