Datasheet AD7686 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | 500 kSPS 16-BIT PulSAR® A/D Converter in MSOP/QFN |
| Pages / Page | 29 / 1 — 16-Bit, 500 kSPS PulSAR. ADC in MSOP. Data Sheet. AD7686. FEATURES. … |
| Revision | C |
| File Format / Size | PDF / 573 Kb |
| Document Language | English |
16-Bit, 500 kSPS PulSAR. ADC in MSOP. Data Sheet. AD7686. FEATURES. FUNCTIONAL BLOCK DIAGRAM
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16-Bit, 500 kSPS PulSAR ADC in MSOP Data Sheet AD7686 FEATURES FUNCTIONAL BLOCK DIAGRAM 16-bit resolution with no missing codes 0.5V TO 5V 5V Throughput: 500 kSPS INL: ±0.6 LSB typical, ±2 LSB maximum (±0.003% of FSR) SINAD: 92.5 dB at 20 kHz REF VDD VIO 1.8V TO VDD THD: −110 dB at 20 kHz 0 TO VREF SDI IN+ Pseudo differential analog input range AD7686 SCK 3- OR 4-WIRE INTERFACE IN– SDO (SPI, DAISY CHAIN, CS) 0 V to VREF with VREF up to VDD GND CNV No pipeline delay Single-supply 5 V operation with
002
1.8 V/2.5 V/3 V/5 V logic interface
02969- Figure 2.
Proprietary serial interface: SPI-/QSPI™-/MICROWIRE™-/DSP- compatible Table 1. MSOP, LFCSP/SOT-23 14-/16-/18-Bit PulSAR ADC Daisy-chain multiple ADCs and busy indicator 400 kSPS Power dissipation 100 250 to 1000 ADC 3.75 µW at 5 V/100 SPS Type kSPS kSPS 500 kSPS kSPS Driver 3.75 mW at 5 V/100 kSPS
18-Bit True AD7691 AD7690 AD7982 ADA4941 Differential AD7982 ADA4941
Standby current: 1 nA
16-Bit True AD7684 AD7687 AD7688 ADA4941
10-lead MSOP (MSOP-8 size) and
Differential AD7693 ADA4841
3 mm × 3 mm, 10-lead LFCSP (SOT-23 size)
16-Bit Pseudo AD7680 AD7685 AD7686 AD7980 ADA4941
Pin-for-pin-compatible with 10-lead MSOP/PulSAR® ADCs
Differential AD7683 AD7694
APPLICATIONS
14-Bit Pseudo AD7940 AD7942 AD7946 ADA4941 Differential
Battery-powered equipment Data acquisitions GENERAL DESCRIPTION Instrumentation Medical instruments
The AD76861 is a 16-bit, charge redistribution, successive
Process controls
approximation, analog-to-digital converter (ADC) that operates from a single 5 V power supply, VDD. It contains a low power,
2.0 POSITIVE INL = +0.52LSB
high speed, 16-bit sampling ADC with no missing codes, an
NEGATIVE INL = –0.38LSB
internal conversion clock, and a versatile serial interface port.
1.5
The part also contains a low noise, wide bandwidth, short
1.0
aperture delay track-and-hold circuit. On the CNV rising edge, the AD7686 samples an analog input IN+ between 0 V to REF
0.5
with respect to a ground sense IN−. The reference voltage, REF,
0
is applied externally and can be set up to the supply voltage.
INL (LSB)
Power dissipation scales linearly with throughput.
–0.5
The SPI-compatible serial interface also features the ability,
–1.0
using the SDI input, to daisy-chain several ADCs on a single, 3-wire bus or provides an optional busy indicator. This device is
–1.5
compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate
–2.0
02969-007 supply VIO.
0 16384 32768 49152 65535 CODE
The AD7686 is housed in a 10-lead MSOP or a 10-lead LFCSP Figure 1. Integral Nonlinearity vs. Code with operation specified from −40°C to +85°C. 1. Protected by U.S. Patent 6,703,961.
Rev. C Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2005–2014 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline Features Applications Functional Block Diagram General Description Table of Contents Revision History Specifications Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configurations and Function Descriptions Terminology Typical Performance Characteristics Theory of Operation Circuit Information Converter Operation Transfer Functions Typical Connection Diagram Analog Input Driver Amplifier Choice Voltage Reference Input Power Supply Supplying the ADC from the Reference Digital Interface CS/ MODE 3-Wire, No Busy Indicator CS/ Mode 3-Wire with Busy Indicator CS/ Mode 4-Wire, No Busy Indicator CS/ Mode 4-Wire with Busy Indicator Chain Mode, No Busy Indicator Chain Mode with Busy Indicator Application Hints Layout Evaluating the Performance of the AD7686 True 16-Bit Isolated Application Example Outline Dimensions Ordering Guide
16-Bit, 500 kSPS PulSAR ADC in MSOP Data Sheet AD7686 FEATURES FUNCTIONAL BLOCK DIAGRAM 16-bit resolution with no missing codes 0.5V TO 5V 5V Throughput: 500 kSPS INL: ±0.6 LSB typical, ±2 LSB maximum (±0.003% of FSR) SINAD: 92.5 dB at 20 kHz REF VDD VIO 1.8V TO VDD THD: −110 dB at 20 kHz 0 TO VREF SDI IN+ Pseudo differential analog input range AD7686 SCK 3- OR 4-WIRE INTERFACE IN– SDO (SPI, DAISY CHAIN, CS) 0 V to VREF with VREF up to VDD GND CNV No pipeline delay Single-supply 5 V operation with
002
1.8 V/2.5 V/3 V/5 V logic interface
02969- Figure 2.
Proprietary serial interface: SPI-/QSPI™-/MICROWIRE™-/DSP- compatible Table 1. MSOP, LFCSP/SOT-23 14-/16-/18-Bit PulSAR ADC Daisy-chain multiple ADCs and busy indicator 400 kSPS Power dissipation 100 250 to 1000 ADC 3.75 µW at 5 V/100 SPS Type kSPS kSPS 500 kSPS kSPS Driver 3.75 mW at 5 V/100 kSPS
18-Bit True AD7691 AD7690 AD7982 ADA4941 Differential AD7982 ADA4941
Standby current: 1 nA
16-Bit True AD7684 AD7687 AD7688 ADA4941
10-lead MSOP (MSOP-8 size) and
Differential AD7693 ADA4841
3 mm × 3 mm, 10-lead LFCSP (SOT-23 size)
16-Bit Pseudo AD7680 AD7685 AD7686 AD7980 ADA4941
Pin-for-pin-compatible with 10-lead MSOP/PulSAR® ADCs
Differential AD7683 AD7694
APPLICATIONS
14-Bit Pseudo AD7940 AD7942 AD7946 ADA4941 Differential
Battery-powered equipment Data acquisitions GENERAL DESCRIPTION Instrumentation Medical instruments
The AD76861 is a 16-bit, charge redistribution, successive
Process controls
approximation, analog-to-digital converter (ADC) that operates from a single 5 V power supply, VDD. It contains a low power,
2.0 POSITIVE INL = +0.52LSB
high speed, 16-bit sampling ADC with no missing codes, an
NEGATIVE INL = –0.38LSB
internal conversion clock, and a versatile serial interface port.
1.5
The part also contains a low noise, wide bandwidth, short
1.0
aperture delay track-and-hold circuit. On the CNV rising edge, the AD7686 samples an analog input IN+ between 0 V to REF
0.5
with respect to a ground sense IN−. The reference voltage, REF,
0
is applied externally and can be set up to the supply voltage.
INL (LSB)
Power dissipation scales linearly with throughput.
–0.5
The SPI-compatible serial interface also features the ability,
–1.0
using the SDI input, to daisy-chain several ADCs on a single, 3-wire bus or provides an optional busy indicator. This device is
–1.5
compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate
–2.0
02969-007 supply VIO.
0 16384 32768 49152 65535 CODE
The AD7686 is housed in a 10-lead MSOP or a 10-lead LFCSP Figure 1. Integral Nonlinearity vs. Code with operation specified from −40°C to +85°C. 1. Protected by U.S. Patent 6,703,961.
Rev. C Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2005–2014 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline Features Applications Functional Block Diagram General Description Table of Contents Revision History Specifications Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configurations and Function Descriptions Terminology Typical Performance Characteristics Theory of Operation Circuit Information Converter Operation Transfer Functions Typical Connection Diagram Analog Input Driver Amplifier Choice Voltage Reference Input Power Supply Supplying the ADC from the Reference Digital Interface CS/ MODE 3-Wire, No Busy Indicator CS/ Mode 3-Wire with Busy Indicator CS/ Mode 4-Wire, No Busy Indicator CS/ Mode 4-Wire with Busy Indicator Chain Mode, No Busy Indicator Chain Mode with Busy Indicator Application Hints Layout Evaluating the Performance of the AD7686 True 16-Bit Isolated Application Example Outline Dimensions Ordering Guide
