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ADS1602IPFBT Arkusz danych(PDF) 1 Page - Texas Instruments |
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ADS1602IPFBT Arkusz danych(HTML) 1 Page - Texas Instruments |
1 / 29 page FSO ReferenceandBiasCircuits Serial Interface LinearPhase FIRDigitalFilter DS Modulator VREFP VREFN RBIAS VMID VCAP AVDD DVDD IOVDD DGND AGND AINP AINN FSO SCLK DOUT SCLK SYNC CLK DOUT OTR PD REFEN ADS1602 ADS1602 www.ti.com SBAS341E – DECEMBER 2004 – REVISED OCTOBER 2011 16-Bit, 2.5MSPS Analog-to-Digital Converter Check for Samples: ADS1602 1 FEATURES DESCRIPTION The ADS1602 is a high-speed, high-precision, 2 • High Speed: delta-sigma ( ΔΣ) analog-to-digital converter (ADC) – Data Rate: 2.5MSPS manufactured on an advanced CMOS process. The – Bandwidth: 1.23MHz ADS1602 oversampling topology reduces clock jitter sensitivity during the sampling of high-frequency, • Outstanding Performance: large amplitude signals by a factor of four over that – SNR: 91dB at fIN = 100kHz, –1dBFS achieved by Nyquist-rate ADCs. Consequently, – THD: –101dB at fIN = 100kHz, –6dBFS signal-to-noise ratio (SNR) is particularly improved. Total harmonic distortion (THD) is –101dB, and the – SFDR: 103dB at fIN = 100kHz, –6dBFS spurious-free dynamic range (SFDR) is 103dB. • Ease-of-Use: Optimized for power and performance, the ADS1602 – High-Speed 3-Wire Serial Interface dissipates only 530mW while providing a full-scale – Directly Connects to TMS320 DSPs differential input range of ±3V. Having such a wide – On-Chip Digital Filter Simplifies Antialias input range makes out-of-range signals unlikely. The Requirements OTR pin indicates if an analog input out-of-range condition does occur. The differential input signal is – Simple Pin-Driven Control—No On-Chip measured against the differential reference, which Registers to Program can be generated internally or supplied externally on – Selectable On-Chip Voltage Reference the ADS1602. – Simultaneous Sampling with Multiple The ADS1602 uses an inherently stable advanced ADS1602s modulator with an on-chip decimation filter. The filter • Low Power: stop band extends to 38.6MHz, which greatly simplifies the antialiasing circuitry. The modulator – 530mW at 2.5MSPS samples the input signal up to 40MSPS, depending – Power-Down Mode on fCLK, while the 16x decimation filter uses a series of four half-band FIR filter stages to provide 75dB of APPLICATIONS stop band attenuation and 0.001dB of passband ripple. • Sonar • Vibration Analysis Output data is provided over a simple 3-wire serial interface at rates up to 2.5MSPS, with a –3dB • Data Acquisition bandwidth of 1.23MHz. The output data or its complementary format directly connects to DSPs such as TI ’s TMS320 family, FPGAs, or ASICs. A dedicated synchronization pin enables simultaneous sampling with multiple ADS1602s in multi-channel systems. Power dissipation is set by an external resistor that allows a reduction in dissipation when operating at slower speeds. All of the ADS1602 features are controlled by dedicated I/O pins, which simplify operation by eliminating the need for on-chip registers. The high performing, easy-to-use ADS1602 is especially suitable for demanding measurement applications in sonar, vibration analysis, and data acquisition. The ADS1602 is offered in a small, 7mm × 7mm TQFP-48 package and is specified from –40°C to +85°C. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2004–2011, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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