AD7686 Series

500kSPS 16-BIT PulSAR®A/D Converter in MSOP/QFN

Catalog

500kSPS 16-BIT PulSAR®A/D Converter in MSOP/QFN

Part	Architecture	Data Interface	Number of Bits	Mounting Type	Sampling Rate (Per Second)	Voltage - Supply, Analog	Number of A/D Converters	Package / Case	Input Type	Voltage - Supply, Digital	Configuration	Number of Inputs	Reference Type	Supplier Device Package	Ratio - S/H:ADC	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case [x]	Package / Case [x]
Analog Devices AD7686BCPZRL7	SAR	DSP SPI	16	Surface Mount	500k	5 V	1	10-VFDFN Exposed Pad CSP	Pseudo-Differential	5 V	S/H-ADC	1	External	10-LFCSP-WD (3x3)	1:1	85 °C	-40 °C
Analog Devices AD7686CRM		DSP SPI	16	Surface Mount	500k		1	10-MSOP 10-TFSOP						10-MSOP		85 °C	-40 °C	3 mm	0.118 in
Analog Devices AD7686CCPZRL7	SAR	DSP SPI	16	Surface Mount	500k	5 V	1	10-VFDFN Exposed Pad CSP	Pseudo-Differential	5 V	S/H-ADC	1	External	10-LFCSP-WD (3x3)	1:1	85 °C	-40 °C
Analog Devices AD7686BCPZRL	SAR	DSP SPI	16	Surface Mount	500k	5 V	1	10-VFDFN Exposed Pad CSP	Pseudo-Differential	5 V	S/H-ADC	1	External	10-LFCSP-WD (3x3)	1:1	85 °C	-40 °C
Analog Devices AD7686BRMZRL7	SAR	DSP SPI	16	Surface Mount	500k	5 V	1	10-MSOP 10-TFSOP	Pseudo-Differential	5 V	S/H-ADC	1	External	10-MSOP	1:1	85 °C	-40 °C	3 mm	0.118 in
Analog Devices AD7686CCPZRL	SAR	DSP SPI	16	Surface Mount	500k	5 V	1	10-VFDFN Exposed Pad CSP	Pseudo-Differential	5 V	S/H-ADC	1	External	10-LFCSP-WD (3x3)	1:1	85 °C	-40 °C

Catalog

500kSPS 16-BIT PulSAR®A/D Converter in MSOP/QFN

Key Features

• 16-bit resolution with no missing codes

• Throughput: 500 kSPS

• INL: ±0.6 LSB typical, ±2 LSB maximum (±0.003% of FSR)

• SINAD: 92.5 dB @ 20 kHz

• THD: −110 dB @ 20 kHz

• Pseudo differential analog input range 0 V to VREFwith VREFup to VDD

• No pipeline delay

• Single-supply 5 V operation with1.8 V/2.5 V/3 V/5 V logic interface

• Serial interface SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible

• Daisy-chain multiple ADCs and busy indicator

• Power dissipation3.75 μW @ 5 V/100 SPS3.75 mW @ 5 V/100 kSPS

• Standby current: 1 nA

Description

The AD7686 is a 16-bit, charge redistribution, successive approximation, analog-to-digital converter (ADC) that operates from a single 5 V power supply, VDD. 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, the AD7686 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. This device is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate supply VIO.The AD7686 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from −40°C to +85°C.APPLICATIONSBattery-powered equipmentData acquisitionsInstrumentationMedical instrumentsProcess controls