Datasheet AD7675 (Analog Devices) - 9

AD7675–Typical Performance Characteristics 1.00 16000 14687 0.75 14000 0.50 12000 0.25 10000 0.00 8000 INL – LSB COUNTS –0.25 6000 –0.50 4000 –0.75 2000 887 810 0 0 0 0 0 0 0 0 –1.00 0000 0 16384 32768 49152 65536 7FF8 7FF9 7FFA 7FFB 7FFC 7FFD 7FFE 7FFF 8000 8001 8002 CODE CODE IN HEXA
TPC 1. Integral Nonlinearity vs. Code TPC 4. Histogram of 16,384 Conversions of a DC Input at the Code Center
9000 18 8246 8118 8000 16 7000 14 6000 12 5000 10 COUNTS 4000 8 3000 NUMBER OF UNITS 6 2000 4 1000 2 0 0 0 6 14 0 0 0 0000 0 7FFB 7FFC 7FFD 7FFE 7FFF 8000 8001 8002 8003 8004 –1.0 –0.8 –0.6 –0.4 –0.2 0.0 CODE IN HEXA NEGATIVE INL – LSB
TPC 2. Histogram of 16,384 Conversions of a DC Input at TPC 5. Typical Negative INL Distribution (40 Units) the Code Transition
18 0 fS = 100 kSPS 16 –20 fIN = 45.01kHz SNR = 94dB THD = –110dB 14 –40 SFDR = 110dB SINAD = 93.9dB 12 –60 10 –80 8 –100 NUMBER OF UNITS 6 –120 4 AMPLITUDE – dB of Full Scale –140 2 –160 0 –180 0 0.2 0.4 0.6 0.8 1.0 0 10 20 30 40 50 POSITIVE INL – LSB FREQUENCY – kHz
TPC 3. Typical Positive INL Distribution (40 Units) TPC 6. FFT Plot –8– REV. A Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM PulSAR Selection GENERAL DESCRIPTION PRODUCT HIGHLIGHTS SPECIFICATIONS Table I. Serial Clock Timings in Master Read after Convert ABSOLUTE MAXIMUM RATINGS ORDERING GUIDE PIN FUNCTION DESCRIPTIONS PIN CONFIGURATION DEFINITION OF SPECIFICATIONS INTEGRAL NONLINEARITY ERROR (INL) DIFFERENTIAL NONLINEARITY ERROR (DNL) +FULL-SCALE ERROR –FULL-SCALE ERROR BIPOLAR 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 Typical Performance Characteristics CIRCUIT INFORMATION CONVERTER OPERATION Transfer Functions TYPICAL CONNECTION DIAGRAM Analog Inputs Single to Differential Driver Driver Amplifier Choice Voltage Reference Input Power Supply POWER DISSIPATION 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 (MC68HC11) ADSP-21065L in Master Serial Interface APPLICATION HINTS Layout Evaluating the AD7675 Performance OUTLINE DIMENSIONS Revision History