EVAL-AD7985EBZ Analog Devices Inc, EVAL-AD7985EBZ Datasheet - Page 10

• Manufacturer Part Number: EVAL-AD7985EBZ
• Description: 16-Bit A/D Converter Eval. Board
• Manufacturer: Analog Devices Inc
• Series: PulSAR®r

Specifications of EVAL-AD7985EBZ

• Silicon Manufacturer: Analog Devices
• Application Sub Type: ADC
• Kit Application Type: Data Converter
• Silicon Core Number: AD7985
• Kit Contents: Board
• Number Of Adc's: 1
• Number Of Bits: 16
• Sampling Rate (per Second): 2.5M
• Data Interface: SPI™, QSPI™, MICROWIRE™, and DSP
• Inputs Per Adc: 1 Differential
• Input Range: 0 ~ 5 V
• Power (typ) @ Conditions: 15.5mW @ 2.5MSPS
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: AD7985
• Development Tool Type: Hardware - Eval/Demo Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD7985
100
95
90
85
80
–100
–120
–140
–160
–180
2.50
95
90
85
80
75
70
65
–20
–40
–60
–80
0
1
0
Figure 12. SNR, SINAD, and ENOB vs. Reference Voltage
2.75
3.00
Figure 11. FFT Plot (External Reference)
250
Figure 13. SINAD vs. Frequency
3.25
REFERENCE VOLTAGE (V)
10
3.50
FREQUENCY (kHz)
FREQUENCY (kHz)
500
3.75
ENOB
4.00
750
4.25
100
SNR
f
f
SNR = 89.87dB
THD = –102.76dB
SINAD = 89.66dB
S
IN
4.50
= 2.5MSPS
= 20kHz
1000
SINAD
4.75
5.00
1000
16
15
14
13
12
1250
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–100
–105
–110
–90
–95
–100
–105
–110
–85
–90
–95
–100
–120
–140
–160
–180
2.50
–20
–40
–60
–80
0
1
0
2.75
Figure 15. THD and SFDR vs. Reference Voltage
3.00
Figure 14. FFT Plot (Internal Reference)
250
Figure 16. THD vs. Frequency
3.25
REFERENCE VOLTAGE (V)
10
3.50
FREQUENCY (kHz)
500
FREQUENCY (kHz)
SFDR
3.75
THD
750
4.00
4.25
100
1000
f
f
SNR = 88.45dB
THD = –103.42dB
SINAD = 88.32dB
4.50
S
IN
= 2.5MSPS
= 20kHz
4.75
1250
5.00
1000
100
95
90
85
80