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AD4001BRMZ-RL7 bảng dữ liệu(PDF) 1 Page - Analog Devices |
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AD4001BRMZ-RL7 bảng dữ liệu(HTML) 1 Page - Analog Devices |
1 / 34 page 16-Bit, 2 MSPS, Precision SAR, Differential ADC Data Sheet AD4001 Rev. 0 Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2017 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES Throughput: 2 MSPS maximum INL: ±0.4 LSB maximum Guaranteed 16-bit no missing codes Low power 9.5 mW at 2 MSPS (VDD only) 80 μW at 10 kSPS 16 mW at 2 MSPS (total) SNR 96.2 dB typical at 1 kHz 95.5 dB typical at 100 kHz THD −123 dB typical at 1 kHz −99 dB typical at 100 kHz Ease of use features reduce system power and complexity Input overvoltage clamp circuit Reduced nonlinear input charge kickback High-Z mode Long acquisition phase Input span compression Fast conversion time allows low SPI clock rates SPI-programmable modes, read/write capability, status word Differential analog input range: ±VREF 0 V to VREF with VREF between 2.4 V to 5.1 V Single 1.8 V supply operation with 1.71 V to 5.5 V logic interface SAR architecture: no latency/pipeline delay Guaranteed operation: −40°C to 125°C Serial interface SPI-/QSPI-/MICROWIRE-/DSP-compatible Ability to daisy-chain multiple ADCs and busy indicator 10-lead, 3 mm × 3 mm LFCSP and 10-lead, 3 mm × 4.90 mm MSOP APPLICATIONS Automatic test equipment Machine automation Medical equipment Battery-powered equipment Precision data acquisition systems GENERAL DESCRIPTION The AD4001 is a low noise, low power, high speed, 16-bit, 2 MSPS, precision successive approximation register (SAR) analog-to- digital converter (ADC). It incorporates ease of use features that lower the signal chain power, reduce signal chain complexity, and enable higher channel density. The high-Z mode, coupled with a long acquisition phase, eliminates the need for a dedicated high power, high speed ADC driver, thus broadening the range of low power precision amplifiers that can drive this ADC directly, while still achieving optimum performance. The input span compression feature enables the ADC driver amplifier and the ADC to operate off common supply rails without the need for a negative supply while preserving the full ADC code range. The low serial peripheral interface (SPI) clock rate requirement reduces the digital input/output power consumption, broadens processor options, and simplifies the task of sending data across digital isolation. Operating from a 1.8 V supply, the AD4001 has a ±VREF fully differential input range with VREF ranging from 2.4 V to 5.1 V. The AD4001 consumes only 16 mW at 2 MSPS with a minimum SCK rate of 70 MHz in turbo mode and achieves ±0.4 LSB integral nonlinearity error (INL) maximum, guaranteed no missing codes at 16 bits with 96.2 dB typical signal-to-noise ratio (SNR). The reference voltage is applied externally and can be set independently of the supply voltage. The SPI-compatible, versatile serial interface features seven different modes including the ability, using the SDI input, to daisy-chain several ADCs on a single 3-wire bus and provides an optional busy indicator. The AD4001 is compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic, using the separate VIO supply. The AD4001 is available in a 10-lead MSOP or a 10-lead LFCSP with operation specified from −40°C to +125°C. The device is pin compatible with the AD4003 18-bit, 2 MSPS, precision SAR differential ADC. FUNCTIONAL BLOCK DIAGRAM GND IN+ IN– SDI SCK SDO CNV AD4001 16-BIT SAR ADC SERIAL INTERFACE VIO REF VDD VREF 0 VREF 0 VREF/2 VREF/2 HIGH-Z MODE CLAMP SPAN COMPRESSION TURBO MODE STATUS BITS 2.5V TO 5V 1.8V 10µF 1.8V TO 5V 3-WIRE OR 4-WIRE SPI INTERFACE (DAISY CHAIN, CS) Figure 1. |
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