
AD9877
Rev. B | Page 5 of 36
Parameter
Temp
Test
Level
Min
Typ
Max
Unit
Dynamic Performance (AIN = 0.5 dBFS, f = 5 MHz)
Signal-to-Noise and Distortion (SINAD)
25°C
I
40.8
47.3
dB
Effective Number of Bits (ENOB)
25°C
I
6.5
7.6
Bits
Total Harmonic Distortion (THD)
25°C
I
60.1
50.0
dB
Spurious-Free Dynamic Range (SFDR)
25°C
I
52.0
63.0
dB
Reference Voltage Error
REFT8 to REFB8 (0.5 V)
25°C
I
100
±10
+100
mV
12-BIT ADC CHARACTERISTICS
Resolution
N/A
12
Bits
Conversion Rate
Full
II
33
MHz
Pipeline Delay
N/A
5.5
ADC cycles
Analog Input
Input Voltage Range
Full
III
2
Vppd
Differential Input Impedance
25°C
III
4||2
kΩ||pF
Aperture Delay
25°C
III
2.0
ns
Aperture Uncertainty (Jitter)
25°C
III
1.2
ps rms
Full-Power Bandwidth
25°C
III
85
MHz
Input Referred Noise
25°C
III
75
μV
Reference Voltage Error
REFT12 to REFB12 (1 V)
25°C
I
200
±16
±200
mV
Dynamic Performance (AIN = 0.5 dBFS, f = 5 MHz)
ADC Sample Clock = OSCIN
Signal-to-Noise and Distortion (SINAD)
Full
II
63.2
65.9
dB
Effective Number of Bits (ENOBs)
Full
II
10.2
10.7
Bits
Signal-to-Noise Ratio (SNR)
Full
II
63.7
66.2
dB
Total Harmonic Distortion (THD)
Full
II
79.1
68.3
dB
Spurious-Free Dynamic Range (SFDR)
Full
II
72.5
79.3
dB
ADC Sample Clock = PLL
Signal-to-Noise and Distortion (SINAD)
Full
II
62.0
64.6
dB
Effective Number of Bits (ENOBs)
Full
II
10.0
10.4
Bits
Signal-to-Noise Ratio (SNR)
Full
II
62.5
64.8
dB
Total Harmonic Distortion (THD)
Full
II
78
67.8
dB
Spurious-Free Dynamic Range (SFDR)
Full
II
71.0
78.9
dB
Dynamic Performance (AIN = 0.5 dBFS, f = 50 MHz)
ADC Sample Clock = OSCIN
Signal-to-Noise and Distortion (SINAD)
Full
II
61.1
63.1
dB
Effective Number of Bits (ENOB)
Full
II
9.9
10.2
Bits
Signal-to-Noise Ratio (SNR)
Full
II
61.5
63.3
dB
Total Harmonic Distortion (THD)
Full
II
77
67.9
dB
Spurious-Free Dynamic Range (SFDR)
Full
II
69.9
79.6
dB
Differential Phase
25°C
III
<0.1
Degrees
Differential Gain
25°C
III
<1
LSB
CHANNEL-TO-CHANNEL ISOLATION
Tx DAC-to-ADC Isolation (5 MHz Analog Output)
Isolation Between Tx and 8-Bit ADCs
25°C
III
80
dB
Isolation Between Tx and 12-Bit ADCs
25°C
III
90
dB
ADC-to-ADC Isolation
(AIN = 0.5 dBFS, f = 5 MHz)
Isolation Between I/Q in and IF12
25°C
III
70
dB
Isolation Between Q and I Inputs
25°C
III
65
dB