Datasheet AD7450 (Analog Devices) - 9

AD7450–Typical Performance Characteristics (Default Conditions: TA = 25 C) 0 0 –63 8192 POINT FFT 8192 POINT FFT f f SAMPLE = 1MSPS SAMPLE = 833kSPS –20 f –20 f –65 IN = 300kHz IN = 300kHz SINAD = 71.7dB SINAD = 70.2dB THD = –82.8dB THD = –82dB –40 –40 PK NOISE = –85.3dB PK NOISE = –87.1dB –67 V –60 –60 –69 DD = 2.7V VDD = 3.3V SNR – dBs SNR – dBs SINAD – dB –80 –80 –71 –100 –100 –73 VDD = 4.75V VDD = 5.25V –120 –120 –75 0 50 100 150 200 250 300 350 400 450 500 0 50 100 150 200 250 300 350 10 100 1000 FREQUENCY – kHz FREQUENCY – kHz INPUT FREQUENCY – kHz
TPC 1. Dynamic Performance at TPC 2. Dynamic Performance at TPC 3. SINAD vs. Analog Frequency 1 MSPS with VDD = 5 V 833 kSPS with V for Various Supply Voltages DD = 3 V
1.0 1.0 1.0 0.8 0.8 0.8 0.6 0.6 0.6 0.4 0.4 0.4 0.2 0.2 0.2 OR – LSB 0 OR – LSB 0 OR – LSB 0 –0.2 –0.2 –0.2 DNL ERR –0.4 DNL ERR –0.4 INL ERR –0.4 –0.6 –0.6 –0.6 –0.8 –0.8 –0.8 –1.0 –1.0 –1.0 0 1024 2048 3072 4096 0 1024 2048 3072 4096 0 1024 2048 3072 4096 CODE CODE CODE
TPC 4. Typical Differential TPC 5. Typical Differential TPC 6. Typical Integral Nonlinearity (DNL) VDD = 5 V Nonlinearity (DNL) VDD = 3 V Nonlinearity (INL) VDD = 5 V
1.0 1.5 0.8 1.0 0.6 1.0 POSITIVE DNL 0.4 0.5 POSITIVE DNL 0.2 0.5 OR – LSB 0 0 –0.2 NEGATIVE DNL 0 INL ERR –0.4 HANGE IN DNL-LSB C CHANGE IN DNL-LSB –0.5 –0.6 –0.5 NEGATIVE DNL –0.8 –1.0 –1.0 –1.0 0 1024 2048 3072 4096 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 0.6 1.2 1.8 2.4 CODE V V REF REF
TPC 7. Typical Integral TPC 8. Change in DNL vs. Reference TPC 9. Change in DNL vs. Reference Nonlinearity (INL) VDD = 3 V Voltage V Voltage V DD = 5 V DD = 3.3 V* –8– Rev. A