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PCM78P Fiches technique(PDF) 2 Page - Burr-Brown (TI) |
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PCM78P Fiches technique(HTML) 2 Page - Burr-Brown (TI) |
2 / 16 page ® PCM78 2 SPECIFICATIONS ELECTRICAL At TC = +25°C, +VDD = +5V, and ±VCC = ±12V, and one minute warm-up in convection environment, unless otherwise noted. PCM78P PARAMETER CONDITIONS MIN TYP MAX UNITS RESOLUTION 16 Bits INPUT/OUTPUT ANALOG INPUT Input Range –3 +3 V Input Impedance 1.5 k Ω DIGITAL INPUT/OUTPUT Logic Family TTL Compatible CMOS Logic Level: VIH IIH = +40µA +2 +5.5 V VIL IIL = –100µA 0 +0.8 V VOH IOH = 2TTL Loads +2.4 V VOL IOL = 2TTL Loads +0.4 V Data Format Serial BOB or BTC Convert Command Negative Edge (1) Pulse Width 25 50 ns CONVERSION TIME 45 µs DYNAMIC CHARACTERISTICS SIGNAL-TO-NOISE RATIO (SNR)(2) fS = 200kHz/TCONV = 4µs(3) f = 1kHz (0dB) BW = 20kHz 90 dB(4) f = 10kHz (0dB) BW = 100kHz 80 dB TOTAL HARMONIC DISTORTION(5) fS = 200kHz/TCONV = 4µs f = 1kHz (0dB) BW = 20kHz –91 dB f = 19kHz (0dB) BW = 20kHz –90 dB f = 10kHz (0dB) BW = 100kHz –90 dB f = 90kHz (0dB) BW = 100kHz –89 dB TOTAL HARMONIC DISTORTION + NOISE(6) fS = 200kHz/TCONV = 4µs f = 1kHz (0dB) BW = 20kHz –88 –82 dB f = 1kHz (–20dB) BW = 20kHz –74 –68 dB f = 1kHz (–60dB) BW = 20kHz –34 dB f = 19kHz (0dB) BW = 20kHz –87 dB f = 10kHz (0dB) BW = 100kHz –82 dB f = 90kHz (0dB) BW = 100kHz –81 dB TRANSFER CHARACTERISTICS ACCURACY Gain Error ±2% Bipolar Zero Error ±20 mV Differential Linearity Error ±0.002 % of FSR(7) Integral Linearity Error ±0.003 % of FSR Missing Codes None 14 Bits(8) DRIFT Gain 0 °C to +70°C ±25 ppm/ °C Bipolar Zero 0 °C to +70°C ±4 ppm of FSR/ °C POWER SUPPLY SENSITIVITY +VCC ±0.008 %FSR/%VCC –VCC ±0.003 %FSR/%VCC +VDD ±0.003 %FSR/%VDD POWER SUPPLY REQUIREMENTS Voltage Range: +VCC +4.75 +15.6 V –VCC – 4.75 –15.6 V +VDD +4.75 +5.25 V Current: +VCC +VCC = +12V +15 mA –VCC –VCC = –12V –21 mA +VDD +VDD = +5V +7 mA Power Dissipation ±V CC = ±12V 575 mW TEMPERATURE RANGE Specification 0 +70 °C Storage –50 +100 °C Operating –25 +85 °C NOTES: (1) When convert command is high, converter is in a halt/reset mode. Actual conversion begins on negative edge. See detailed text on timing for convert command description when using external clock. (2) Ratio of Noise rms/Signal rms. (3) f = input frequency; fS = sample frequency (PCM78P and SHC702 in combination); BW = bandwidth of output (based on FFT or actual analog reconstruction using a 20kHz low-pass filter). (4) Referred to input signal level. (5) Ratio of Distortion rms/Signal rms. (6) Ratio of Distortion rms + Noise rms/Signal rms. (7) FSR: Full-Scale Range = 6Vp-p. (8) Typically no missing Codes at 14-bit resolution. |
Numéro de pièce similaire - PCM78P |
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Description similaire - PCM78P |
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