PDF ADC08200 Data sheet ( Hoja de datos )

Número de pieza	ADC08200
Descripción	8-Bit/ 20 MSPS to 200 MSPS/ 1.05 mW/MSPS A/D Converter
Fabricantes	National Semiconductor
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No Preview Available ! November 2002 ADC08200 8-Bit, 20 MSPS to 200 MSPS, 1.05 mW/MSPS A/D Converter General Description The ADC08200 is a low-power, 8-bit, monolithic analog-to- digital converter with an on-chip track-and-hold circuit. Opti- mized for low cost, low power, small size and ease of use, this product operates at conversion rates up to 230 MSPS while consuming just 1.05 mW per MHz of clock frequency, or 210 mW at 200 MSPS. Raising the PD pin puts the ADC08200 into a Power Down mode where it consumes 1 mW. The unique architecture achieves 7.3 Effective Bits with 50 MHz input frequency. The ADC08200 is resistant to latch-up and the outputs are short-circuit proof. The top and bottom of the ADC08200’s reference ladder are available for connections, enabling a wide range of input possibilities. The digital outputs are TTL/CMOS compatible with a separate output power supply pin to support interfacing with 3V or 2.5V logic. The digital inputs (CLK and PD) are TTL/CMOS compatible. The ADC08200 is offered in a 24-lead plastic package (TSSOP) and is specified over the industrial temperature range of −40˚C to +85˚C. Features n Single-ended input n Internal sample-and-hold function n Low voltage (single +3V) operation n Small package n Power-down feature Key Specifications j Resolution: j Maximum sampling frequency: j DNL: j ENOB (fIN= 50 MHz): j THD (fIN= 50 MHz): j No missing codes j Power Consumption Operating Power down 8 bits 200 MSPS (min) ±0.4 LSB (typ) 7.3 bits (typ) −61 dB (typ) Guaranteed 1.05 mW/MSPS (typ) 1 mW (typ) Applications n Flat panel displays n Projection systems n Set-top boxes n Battery-powered instruments n Communications n Medical scan converters n X-ray imaging n High speed viterbi decoders n Astronomy Pin Configuration © 2002 National Semiconductor Corporation DS200179 20017901 www.national.com 1 page Converter Electrical Characteristics (Continued) The following specifications apply for VA = VDR = +3.0VDC, VRT = +1.9V, VRB = 0.3V, CL = 5 pF, fCLK = 200 MHz at 50% duty cycle. Boldface limits apply for TA = TMIN to TMAX: all other limits TA = 25˚C (Notes 7, 8) Symbol Parameter Conditions Typical (Note 9) Limits (Note 9) Units (Limits) DYNAMIC PERFORMANCE fIN = 4 MHz, VIN = FS − 0.25 dB 7.5 Bits fIN = 20 MHz, VIN = FS − 0.25 dB 7.4 Bits ENOB Effective Number of Bits fIN = 50 MHz, VIN = FS − 0.25 dB 7.3 6.9 Bits (min) fIN = 70 MHz, VIN = FS − 0.25 dB 7.2 Bits fIN = 100 MHz, VIN = FS − 0.25 dB 7.0 Bits fIN = 4 MHz, VIN = FS − 0.25 dB 47 dB fIN = 20 MHz, VIN = FS − 0.25 dB 46 dB SINAD Signal-to-Noise & Distortion fIN = 50 MHz, VIN = FS − 0.25 dB 46 43.3 dB (min) fIN = 70 MHz, VIN = FS − 0.25 dB 45 dB fIN = 100 MHz, VIN = FS − 0.25 dB 44 dB fIN = 4 MHz, VIN = FS − 0.25 dB 47 dB fIN = 20 MHz, VIN = FS − 0.25 dB 46 dB SNR Signal-to-Noise Ratio fIN = 50 MHz, VIN = FS − 0.25 dB 46 43.4 dB (min) fIN = 70 MHz, VIN = FS − 0.25 dB 45 dB fIN = 100 MHz, VIN = FS − 0.25 dB 44 dB fIN = 4 MHz, VIN = FS − 0.25 dB 60 dBc fIN = 20 MHz, VIN = FS − 0.25 dB 58 dBc SFDR Spurious Free Dynamic Range fIN = 50 MHz, VIN = FS − 0.25 dB 60 dBc fIN = 70 MHz, VIN = FS − 0.25 dB 57 dBc fIN = 100 MHz, VIN = FS − 0.25 dB 54 dBc fIN = 4 MHz, VIN = FS − 0.25 dB −60 dBc fIN = 20 MHz, VIN = FS − 0.25 dB −58 dBc THD Total Harmonic Distortion fIN = 50 MHz, VIN = FS − 0.25 dB −60 dBc fIN = 70 MHz, VIN = FS − 0.25 dB -56 dBc fIN = 100 MHz, VIN = FS − 0.25 dB −53 dBc fIN = 4 MHz, VIN = FS − 0.25 dB −66 dBc fIN = 20 MHz, VIN = FS − 0.25 dB -68 dBc HD2 2nd Harmonic Distortion fIN = 50 MHz, VIN = FS − 0.25 dB −66 dBc fIN = 70 MHz, VIN = FS − 0.25 dB -60 dBc fIN = 100 MHz, VIN = FS − 0.25 dB −55 dBc fIN = 4 MHz, VIN = FS − 0.25 dB −72 dBc fIN = 20 MHz, VIN = FS − 0.25 dB −58 dBc HD3 3rd Harmonic Distortion fIN = 50 MHz, VIN = FS − 0.25 dB −72 dBc fIN = 70 MHz, VIN = FS − 0.25 dB -58 dBc fIN = 100 MHz, VIN = FS − 0.25 dB −60 dBc IMD Intermodulation Distortion f1 = 11 MHz, VIN = FS − 6.25 dB f2 = 12 MHz, VIN = FS − 6.25 dB -55 dBc POWER SUPPLY CHARACTERISTICS IA IDR IA + IDR Analog Supply Current Output Driver Supply Current Total Operating Current DC Input fIN = 10 MHz, VIN = FS − 3 dB DC Input, PD = Low DC Input, PD = Low CLK Low, PD = Hi 69.75 86 mA (max) 69.75 mA (max) 0.25 0.6 mA (max) 70 86.6 mA (max) 0.3 mA PC Power Consumption DC Input, Excluding Reference 210 260 mW (max) PSRR1 Power Supply Rejection Ratio FSE change with 2.7V to 3.3V change in VA 54 dB 5 www.national.com 5 Page Typical Performance Characteristics VA = VDR = 3V, fCLK = 200 MHz, fIN = 50 MHz, unless otherwise stated (Continued) Distortion vs Input Frequency Distortion vs Clock Duty Cycle 20017928 SINAD/ENOB vs Temperature 20017929 SINAD/ENOB vs Supply Voltage 20017930 SINAD/ENOB vs Sample Rate 20017938 SINAD/ENOB vs Input Frequency 20017916 11 20017939 www.national.com 11 Page

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