Datasheet AD7450 (Analog Devices) - 10

AD7450 1.5 1 VDD = 5V 2.0 0 fS = 1MSPS 1.0 –1 1.5 V POSITIVE INL DD = 3.3V –2 0.5 fS = 833kSPS 1.0 OR – LSB –3 POSITIVE INL 0 0.5 –4 –5 0 –0.5 HANGE IN INL-LSB O-CODE ERR –6 C CHANGE IN INL-LSB –0.5 NEGATIVE INL ZER –7 –1.0 NEGATIVE INL –1.0 –8 –1.5 –9 –1.5 0.25 0.75 1.25 1.75 2.25 2.75 3.25 3.50 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 0.6 1.2 1.8 2.4 VREF V V REF REF
TPC 10. Change in INL vs. Reference TPC 11. Change in INL vs. Reference TPC 12. Change in Zero-Code Error vs. Voltage V Voltage V Reference Voltage V DD = 5 V DD = 3.3 V* DD = 5 V and 3.3 V*
12 10,000 10,000 10,000 9,000 9,000 9,839 CODES CODES 11 V 8,000 V = V 8,000 V = V DD = 5V IN IN– IN IN– f 10,000 CONVERSIONS 10,000 CONVERSIONS S = 1MSPS 7,000 f 7,000 10 S = 1MSPS fS = 833kSPS 6,000 6,000 9 5,000 5,000 4,000 4,000 8 V 3,000 3,000 DD = 3.3V FFECTIVE NUMBER OF BITS f E S = 833kSPS 2,000 2,000 7 71 90 1,000 1,000 CODES CODES 6 0 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 2044 2045 2046 2047 2048 2049 2044 2045 2046 2047 2048 2049 VREF CODE CODE
TPC 13. Histogram of the Output TPC 14. Histogram of the Output TPC 15. Change in ENOB vs. Refer- Codes with a DC Input for V Codes with a DC Input for V ence Voltage V DD = 5 V DD = 3 V DD = 5 V and 3.3 V*
90 VDD = 5V 80 70 VDD = 3V 60 50 40 CMRR – dB 30 20 10 0 10 100 1,000 10,000 FREQUENCY – kHz
TPC 16. CMRR vs. Input Frequency for VDD = 5 V and 3 V *See References section. Rev. A –9–