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AD9876 Datasheet(PDF) 3 Page - Analog Devices

Part # AD9876
Description  Broadband Modem Mixed-Signal Front End
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD9876 Datasheet(HTML) 3 Page - Analog Devices

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REV. A
–3–
AD9876
Test
Parameter
Temp
Level
Min
Typ
Max
Unit
Rx PATH GAIN/OFFSET
Minimum Programmable Gain
25
°C
III
–6
dB
Maximum Programmable Gain (12 MHz Filter)
25
°C
III
36
dB
Maximum Programmable Gain (26 MHz Filter)
25
°C
III
30
dB
Gain Step Size
25
°C
III
2
dB
Gain Step Accuracy
25
°C
III
±0.4
dB
Gain Range Error
25
°C
III
±1.0
dB
Offset Error, PGA Gain = 0 dB
25
°C
III
±10
LSB
Absolute Gain Error
25
°C
III
±0.8
dB
Rx PATH INPUT CHARACTERISTICS
Input Voltage Range
Full
III
4
Vppd
Input Capacitance
25
°C
III
4
pF
Differential Input Resistance
25
°C
III
270
Input Bandwidth (–3 dB)
25
°C
III
50
MHz
Input Referred Noise (at –36 dB Gain with Filter)
25
°C
III
16
µV rms
Input Referred Noise (at –6 dB Gain with Filter)
25
°C
III
684
µV rms
Common-Mode Rejection
25
°C
III
40
dB
Rx PATH LPF (Low Cutoff Frequency)
Cutoff Frequency
25
°C
III
12
MHz
Cutoff Frequency Variation
25
°C
III
±7%
Attenuation @ 22 MHz
25
°C
III
20
dB
Pass-Band Ripple
25
°C
III
±1.0
dB
Group Delay Variation
25
°C
III
30
ns
Settling Time
(to 1% FS, Min to Max Gain Change)
25
°C
III
150
ns
Total Harmonic Distortion at Max Gain (THD)
25
°C
III
–68
dBc
Rx PATH LPF (High Cutoff Frequency)
Cutoff Frequency
25
°C
III
26
MHz
Cutoff Frequency Variation
25
°C
III
±7%
Attenuation @ 44 MHz
25
°C
III
20
dB
Pass-Band Ripple
25
°C
III
±1.2
dB
Group Delay Variation
25
°C
III
15
ns
Settling Time
(to 1% FS, Min to Max Gain Change)
25
°C
III
80
ns
Total Harmonic Distortion at Max Gain (THD)
25
°C
III
–65
dBc
Rx PATH DIGITAL HPF
Latency (ADC Clock Source Cycles)
Full
II
1
Cycle
Roll-Off in Stop Band
Full
II
6
dB/Octave
–3 dB Frequency
Full
II
fADC /400
Hz
Rx PATH DISTORTION PERFORMANCE
IMD: f1 = 6.5 MHz, f2 = 7.7 MHz
12 MHz Filter : 0 dB Gain
25
°C
III
–65
dBc
: 30 dB Gain
25
°C
III
–57
dBc
26 MHz Filter : 0 dB Gain
25
°C
III
–65
dBc
: 30 dB Gain
25
°C
III
–56
dBc
POWER-DOWN/DISABLE TIMING
DAC IOUT OFF after Tx QUIET Asserted
Full
II
200
ns
DAC IOUT ON after Tx QUIET De-Asserted
Full
II
1
µs
Power-Down Delay (Active to Power-Down)
DAC
Full
II
400
ns
Interpolator
Full
II
200
ns
Power-Up Delay (Power-Down to Active)
DAC
Full
II
40
µs
PLL
Full
II
10
µs
ADC
Full
II
1000
µs
PGA
Full
II
1
µs
LPF
Full
II
1
µs
Interpolator
Full
II
200
ns
VRC
Full
II
2
µs
Minimum RESET Pulsewidth Low (tRL)
Full
II
5
fOSCIN Cycles


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