EVAL-AD7864-2CB Analog Devices Inc, EVAL-AD7864-2CB Datasheet - Page 23

• Manufacturer Part Number: EVAL-AD7864-2CB
• Description: EVAL BOARD FOR AD7864 DATA SYS
• Manufacturer: Analog Devices Inc

Specifications of EVAL-AD7864-2CB

• Rohs Status: RoHS non-compliant
• Number Of Adc's: 1
• Number Of Bits: 12
• Sampling Rate (per Second): 520k
• Data Interface: Parallel
• Inputs Per Adc: 4 Differential
• Input Range: 0 ~ 5 V
• Power (typ) @ Conditions: 90mW @ 520kSPS
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: AD7864-2
• Lead Free Status / Rohs Status: Not Compliant
• Other names: Q1722474

From Figure 22, the ENOB of the AD7864 at 1 MHz is
approximately 11 bits. This is equivalent to 68 dB SNR.
SNR
68 dB = SNR
SNR
TOTAL
JITTER
= 70.2 dB
= SNR
JITTER
JITTER
+ 72 dB (at 100 kHz)
+ SNR
QUANT
= 68 dB
Rev. D | Page 23 of 28
From Equation 3
where σ is the rms jitter of the AD7864.
70.2 dB = 20 × log
σ = 49 ps
10
[1/(2 × π × 1 MHz × σ)]
AD7864