Datasheet AD7724 (Analog Devices) - 9

AD7724–Typical Performance Characteristics (AVDD = DVDD = 5.0 V, TA = 25
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C; CLKIN = 13 MHz ac-coupled sine wave, AIN = 20 kHz, Bipolar Mode; VIN(+) = 0 V to 2.5 V, VIN(–) = 1.25 V unless otherwise noted) 110 84 –85 85 100 AIN = 1/5
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BW –90 86 SNR 90 –95 SFDR 87 dB 80 dB 88 dB –100 S/ (N+D) 89 70 –105 90 SFDR 60 –110 91 THD 50 92 –115 –40 –30 –20 –10 0 0 50 100 150 200 250 300 0 20 40 60 80 100 INPUT LEVEL – dB OUTPUT DATA RATE – kSPS INPUT FREQUENCY – kHz
TPC 1. S/(N+D) and SFDR vs. TPC 2. S/(N+D) vs. Output Sample TPC 3. SNR, THD, and SFDR vs. Analog Input Level Rate Input Frequency
–85 84 92.0 85 91.5 –90 AIN = 1/5
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BW SNR 86 VIN (+) = VIN(–) = 1.25V p-p 91.0 VIN (+) = VIN(–) = 1.25V p-p VCM = 2.5V –95 VCM = 2.5V 87 90.5 THD dB –100 dB 88 90.0 dB 89 89.5 –105 SFDR 90 89.0 –110 91 88.5 –115 92 88.0 0 20 40 60 80 100 0 50 100 150 200 250 300 –50 0 50 100 INPUT FREQUENCY – kHz OUTPUT DATA RATE – kSPS TEMPERATURE – °C
TPC 4. SNR, THD, and SFDR vs. TPC 5. S/(N+D) vs. Output Sample TPC 6. SNR vs. Temperature Input Frequency Rate
–94 5000 1.0 –96 4500 0.8 THD –98 V 4000 IN(+) = VIN(–) 0.6 CLKIN = 13MHz –100 3500 8k SAMPLES 0.4 –102 LSB 3RD 3000 – 0.2 –104 dB 2500 0 –106 4TH 2000 –0.2 –108 1500 –0.4 –110 DNL ERROR –112 1000 –0.6 FREQUENCY OF OCCURENCE –114 500 –0.8 2ND –116 0 –1.0 –50 –25 0 25 50 75 100 n–3 n–2 n–1 n n+1 n+2 n+3 0 20000 40000 65535 TEMPERATURE – °C CODES CODE
TPC 7. THD vs. Temperature TPC 8. Histogram of Output Codes TPC 9. Differential Nonlinearity with DC Input –8– REV. B