Datasheet AD7653 (Analog Devices)

16-Bit 1 MSPS PulSAR Unipolar ADC with Reference Data Sheet AD7653 FEATURES FUNCTIONAL BLOCK DIAGRAM Throughput: REFBUFIN REF REFGND DVDD DGND 1 MSPS (Warp mode) AGND AD7653 OVDD 800 kSPS (Normal mode) AVDD REF SERIAL OGND 666 kSPS (Impulse mode) PORT 16-bit resolution IN 16 SWITCHED DATA[15:0] Analog input voltage range: 0 V to 2.5 V CAP DAC INGND BUSY No pipeline delay PARALLEL PDREF INTERFACE RD Parallel and serial 5 V/3 V interface PDBUF CLOCK CS SPI®/QSPITM/MICROWIRETM/DSP compatible PD CONTROL LOGIC AND SER/PAR Single 5 V supply operation RESET CALIBRATION CIRCUITRY OB/2C Power dissipation BYTESWAP 92 mW typ @ 666 kSPS, 138 µW @ 1 kSPS without REF WARP IMPULSE CNVST 128 mW typ @ 1 MSPS with REF
02966-0-001
48-lead LQFP and 48-lead LFCSP packages
Figure 1.
Pin-to-pin compatible with PulSAR ADCs Table 1. PulSAR™ Selection 800– APPLICATIONS Type/kSPS 100–250 500–570 1000 Data acquisition
Pseudo- AD7651 AD7650/AD7652 AD7653
Instrumentation
Differential AD7660/AD7661 AD7664/AD7666 AD7667
Digital signal processing
True Bipolar AD7663 AD7666 AD7671
Spectrum analysis
True AD7675 AD7676 AD7677
Medical instruments
Differential
Battery-powered systems
18-Bit AD7678 AD7679 AD7674
Process control
Multichannel/ AD7654 Simultaneous AD7655
GENERAL DESCRIPTION PRODUCT HIGHTLIGHTS
The AD7653 is a 16-bit, 1 MSPS, charge redistribution SAR 1. Fast Throughput. analog-to-digital converter that operates from a single 5 V The AD7653 is a 1 MSPS, charge redistribution, 16-bit SAR power supply. The part contains a high speed 16-bit sampling ADC with internal error correction circuitry. ADC, internal conversion clock, internal reference, error 2. Internal Reference. correction circuits, and both serial and parallel system interface The AD7653 has an internal reference with a typical ports. It features a very high sampling rate mode (Warp), a fast temperature drift of 7 ppm/°C. mode (Normal) for asynchronous conversion rate applications, 3. Single-Supply Operation. and a reduced power mode (Impulse) for low power applica- The AD7653 operates from a single 5 V supply. In Impulse tions where power is scaled with the throughput. The AD7653 mode, its power dissipation decreases with the throughput. is fabricated using Analog Devices’ high performance, 0.6 4. Serial or Parallel Interface. micron CMOS process, with correspondingly low cost. It is Versatile parallel or 2-wire serial interface arrangement is available in a 48-lead LQFP and a tiny 48-lead LFCSP with compatible with both 3 V and 5 V logic. operation specified from –40°C to +85°C.
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Document Outline Features Applications General Description Functional Block Diagram Product Hightlights Revision History Specifications Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Definitions of Specifications Integral Nonlinearity Error (INL) Differential Nonlinearity Error (DNL) Full-Scale Error Unipolar Zero Error Spurious-Free Dynamic Range (SFDR) Effective Number of Bits (ENOB) Total Harmonic Distortion (THD) Signal-to-Noise Ratio (SNR) Signal-to-(Noise + Distortion) Ratio (S/[N+D]) Aperture Delay Transient Response Overvoltage Recovery Reference Voltage Temperature Coefficient Typical Performance Characteristics Circuit Information Converter Operation Modes of Operation Transfer Functions Typical Connection Diagram Analog Input Driver Amplifier Choice Voltage Reference Input Power Supply Power Dissipation vs. Throughput Conversion Control Digital Interface Parallel Interface Serial Interface Master Serial Interface Internal Clock Slave Serial Interface External Clock External Discontinuous Clock Data Read After Conversion External Clock Data Read During Conversion Microprocessor Interfacing SPI Interface (ADSP-2191M) Application Hints Bipolar and Wider Input Ranges Layout Outline Dimensions Ordering Guide