Datasheet AD7694 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | 250 kSPS 16-BIT PulSAR® A/D Converter in µSOIC |
| Pages / Page | 17 / 1 — 16-Bit, 250 kSPS PulSAR® ADC in MSOP. Data Sheet. AD7694. FEATURES. … |
| Revision | B |
| File Format / Size | PDF / 362 Kb |
| Document Language | English |
16-Bit, 250 kSPS PulSAR® ADC in MSOP. Data Sheet. AD7694. FEATURES. APPLICATION DIAGRAM. 16-bit resolution with no missing codes
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16-Bit, 250 kSPS PulSAR® ADC in MSOP Data Sheet AD7694 FEATURES APPLICATION DIAGRAM 16-bit resolution with no missing codes 1V TO VDD 2.5V TO 5V Throughput: 250 kSPS at 5 V INL: ±4 LSB max S/(N + D): 92 dB at 20 kHz REF VDD 0 TO VREF THD: –106 dB at 20 kHz IN+ SCK AD7694 3-WIRE SPI Pseudo-differential analog input range: IN– SDO INTERFACE 0 V to V CNV REF with VREF up to VDD GND No pipeline delay
05003-001
Single-supply operation: 2.7 V or 5 V
Figure 1.
Proprietary serial interface SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible1 Supply Current: 540 μA at 2.7 V/100 kSPS, Table 1. MSOP, LFCSP (QFN)/SOT-23, 16-Bit PulSAR ADC 800 μA at 5 V/100 kSPS Type 100 kSPS 250 kSPS 500 kSPS Standby current: 1 nA
True Differential AD7684 AD7687 AD7688
8-lead MSOP package
Pseudo AD7683 AD7685 AD7686
Improved second source to LTC1864 and LTC1864L
Differential/Unipolar AD7694 Unipolar AD7680
APPLICATIONS Battery-powered equipment Data acquisition Instrumentation Medical instruments Process control GENERAL DESCRIPTION
The AD7694 is a 16-bit, charge redistribution, successive approximation, PulSAR analog-to-digital converter (ADC) that operates from a single power supply, VDD, between 2.7 V to 5.25 V. It contains a low power, high speed, 16-bit sampling ADC with no missing codes (B grade), an internal conversion clock, and a serial, SPI-compatible 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. Its power scales linearly with throughput. The AD7694 is housed in an 8-lead MSOP package with an operating temperature specified from −40°C to +85°C. 1 Protected by U.S. Patent 6,703,961.
Rev. B 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 ©2004–2014 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 General Description Application Diagram Table of Contents Revision History Specifications Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Terminology Typical Performance Characteristics Application Information 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 Layout Evaluating the AD7694 Performance Outline Dimensions Ordering Guide
16-Bit, 250 kSPS PulSAR® ADC in MSOP Data Sheet AD7694 FEATURES APPLICATION DIAGRAM 16-bit resolution with no missing codes 1V TO VDD 2.5V TO 5V Throughput: 250 kSPS at 5 V INL: ±4 LSB max S/(N + D): 92 dB at 20 kHz REF VDD 0 TO VREF THD: –106 dB at 20 kHz IN+ SCK AD7694 3-WIRE SPI Pseudo-differential analog input range: IN– SDO INTERFACE 0 V to V CNV REF with VREF up to VDD GND No pipeline delay
05003-001
Single-supply operation: 2.7 V or 5 V
Figure 1.
Proprietary serial interface SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible1 Supply Current: 540 μA at 2.7 V/100 kSPS, Table 1. MSOP, LFCSP (QFN)/SOT-23, 16-Bit PulSAR ADC 800 μA at 5 V/100 kSPS Type 100 kSPS 250 kSPS 500 kSPS Standby current: 1 nA
True Differential AD7684 AD7687 AD7688
8-lead MSOP package
Pseudo AD7683 AD7685 AD7686
Improved second source to LTC1864 and LTC1864L
Differential/Unipolar AD7694 Unipolar AD7680
APPLICATIONS Battery-powered equipment Data acquisition Instrumentation Medical instruments Process control GENERAL DESCRIPTION
The AD7694 is a 16-bit, charge redistribution, successive approximation, PulSAR analog-to-digital converter (ADC) that operates from a single power supply, VDD, between 2.7 V to 5.25 V. It contains a low power, high speed, 16-bit sampling ADC with no missing codes (B grade), an internal conversion clock, and a serial, SPI-compatible 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. Its power scales linearly with throughput. The AD7694 is housed in an 8-lead MSOP package with an operating temperature specified from −40°C to +85°C. 1 Protected by U.S. Patent 6,703,961.
Rev. B 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 ©2004–2014 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 General Description Application Diagram Table of Contents Revision History Specifications Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Terminology Typical Performance Characteristics Application Information 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 Layout Evaluating the AD7694 Performance Outline Dimensions Ordering Guide
