CLC952ACMSA

N CLC952 12-bit, 41MSPS Monolithic A/D Converter General Description Features The CLC952 is a complete monolithic 12-bit 41MSPS analog-todigital converter system. Fabricated from a 0.8µm BiCMOS process, the CLC952’s on-chip features include a very linear wideband track-and-hold, bandgap voltage reference and a proprietary 12-bit multi-stage quantizer. The CLC952 has been designed for wideband digital communications receivers and features a 72dBc spurious-free dynamic range (SFDR) and 64dB signal-to-noise ratio (SNR). ■ ■ ■ te ■ 41MSPS Wide dynamic range SFDR: 72dBc SNR: 64dB Low power dissipation: 660mW Ground centered, DC-coupled analog input Excellent PSRR: >60dB Very small package: 28-pin SSOP Low cost ■ ■ ■ Applications ■ Cellular base-stations Digital communications Infrared/CCD imaging IF sampling Electro-optics Instrumentation Medical imaging High definition video ol e The CLC952 operates from a standard ±5V power supply and features excellent noise isolation with its >60dB power-supply rejection ratio (PSRR). All digital control functions and output registers are TTL compatible. The CLC952AC operates over the commercial temperature range (0°C to 70°C), and the CLC952AJ operates over the industrial temperature range (-40°C to 85°C) version. The CLC952 is available in a 28-pin SSOP that provides an extremely small footprint for reduced board space. National Semiconductor thoroughly tests each part to verify full compliance with guaranteed specifications. ■ ■ ■ ■ ■ ■ O bs ■ CLC952 12-bit, 41MSPS Monolithic A/D Converter September 1997 Offset Adjust CLC952 Block Diagram VREF 2.4V Voltage Reference Vin Input Amp T/H Amplifier 12-bit Subranging Quantizer TTL Output Buffer D11 MSB • • D0 LSB Timing Generator ENCODE © 1997 National Semiconductor Corporation Printed in the U.S.A. http://www.national.com CLC952 Electrical Characteristics PARAMETERS (VCC = +5V, VEE = -5V, 40.96MSPS; unless specified) CONDITIONS TEMP Note 4 DYNAMIC PERFORMANCE small-signal bandwidth large-signal bandwidth slew rate overvoltage recovery time effective aperture delay aperture jitter Vin = 1/4FS Vin = FS Vin = 1.5FS (0.01%) DIGITAL INPUTS input voltage input current output voltage 64 61 64 61 62 60 dB dB dB dB dB dB 72 71 69 68 67 66 dBc dBc dBc dBc dBc dBc +25°C 75 dBFS +25°C +25°C +25°C Full +25°C Full 1.4 3.0 5.1 LSB LSB mV mV %FS %FS 60 60 60 te 64 61 ol e 60 DC; FS DC; FS logic LOW logic HIGH logic LOW logic HIGH logic LOW logic HIGH O 41MSPS 41MSPS 41MSPS 41MSPS 41MSPS Full Full Full Full Full Full Full Full Full Full Full +25°C +25°C Full +25°C Full +25°C +25°C +25°C 25.0 -4.5 +25°C +25°C 15.0 0.8 2.0 5 25 0.8 2.4 40.96 10.5 3.0 12.2 12.2 15 1.0 15 54 78 660 72 60 1 1 1 1 1 1 3 3 Ω pF 500 2 0 4.0 NOTES MAX MHz MHz V/µs ns ns ps(rms) +25°C Full +25°C Full +25°C Full TIMING maximum conversion rate minimum conversion rate pulse width high pulse width low pipeline delay output propagation delay POWER REQUIREMENTS +5V supply current +5V supply current -5V supply current -5V supply current nominal power dissipation VEE power supply rejection ratio VCC power supply rejection ratio TYP UNITS 185 180 357 5 1.6 4 +25°C Full +25°C Full +25°C Full bs ANALOG INPUT AND PERFORMANCE analog input resistance analog input capacitance MIN +25°C +25°C +25°C +25°C +25°C +25°C NOISE AND DISTORTION (40.96MSPS) signal-to-noise ratio (w/o harmonics) 2.0MHz FS FS 9.67MHz FS FS 19.5MHz FS FS spurious-free dynamic range 2.0MHz FS-1dB FS-1dB 9.67MHz FS-1dB FS-1dB 19.5MHz FS-1dB FS-1dB intermodulation distortion FS-7dB 19.49MHz (f1), 19.9MHz (f2) DC ACCURACY AND PERFORMANCE differential non-linearity integral non-linearity bipolar offset error bipolar offset error bipolar gain error bipolar gain error RATINGS 70 70 100 100 V V µA µA V V 1,3 1,3 1,3 1,3 1,3 1,3 MSPS MSPS ns ns clk cycle ns 1,3 3 3 3 3 mA mA mA mA mW dB dB 1 3 1 3 Min/max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are determined from tested parameters. Notes 1) These parameters are 100% tested at 25°C. 2) Typical specifications are the mean values of the distributions of deliverable converters tested to date. http://www.national.com 3) Min/max data over temperature is based on the 5 sigma limit for deliverable converters tested to date. 4) Full temperature range is 0°C to +70°C for AC, -40°C to +85°C for AJ. 2 Absolute Maximum Ratings positive supply voltage (VCC) negative supply voltage (VEE) differential voltage between any two grounds analog input voltage range digital input voltage range output short circuit duration (one-pin to ground) junction temperature storage temperature range lead solder duration (+300°C) Recommended Operating Conditions -0.5V to +6V +0.5V to -6V