AD9873 Datasheet, PDF (3/39 Pages) Analog Devices – Analog Front End Converter for Set-Top Box, Cable Modem

SPECIFICATIONS (VAS = 3.3 V ؎ 5%, VDS = 3.3 V ؎ 10%, fOSCIN = 27 MHz, fSYSCLK = 216 MHz, fMCLK = 54 MHz
(M = 8, N = 4), ADC Sample Rate derived from PLL f_MCLK , R_SET = 10 k⍀, 75 ⍀ DAC Load)
Parameter
Test
Temp Level
Min
Typ
Max
SYSTEM CLOCK, DAC SAMPLING f_SYSCLK
Frequency Range
Full
III
232
OSC IN and XTAL CHARACTERISTICS
Frequency Range
Duty Cycle
Input Capacitance
Input Resistance
Full
III
3
25ЊC
III
35
25ЊC
IV
25ЊC
IV
33
50
65
3
100
MCLK OUT JITTER (f_MCLK Derived from PLL)
TxDAC CHARACTERISTICS¹
Resolution
Full-Scale Output Current
Gain Error (Using Internal Reference)
Output Offset
Reference Voltage (REFIO Level)
Differential Nonlinearity (DNL)
Integral Nonlinearity (INL)
Output Capacitance
Phase Noise @ 1 kHz Offset, 42 MHz
Output Voltage Compliance Range
Wideband SFDR
5 MHz Analog Out, I_OUT = 4 mA
65 MHz Analog Out, I_OUT = 4 mA
Narrowband SFDR (Ϯ100 kHz Window)
65 MHz Analog Out, I_OUT = 4 mA
Tx MODULATOR CHARACTERISTICS
I/Q Offset
Pass Band Amplitude Ripple (f < f_IQCLK/8)
Pass Band Amplitude Ripple (f < f_IQCLK/4)
Stop Band Response (f > f_IQCLK × 3/4)
25ЊC
IV
6
N/A
N/A
12
Full
III
2
4
20
25ЊC
I
–3
0.14
+3
25ЊC
I
–1
+1
25°C
I
1.18
1.23
1.28
25ЊC
IV
± 2.5
25ЊC
IV
±8
25ЊC
IV
5
25ЊC
IV
–113
Full
III
–0.5
+1.5
25ЊC
IV
59
25ЊC
IV
54
25ЊC
IV
79
Full
III
50
Full
III
Full
III
Full
III
55
Ϯ0.1
Ϯ0.5
–63
8-BIT ADC CHARACTERISTICS
Resolution
N/A
N/A
8
Conversion Rate
Full
III
16.5
Pipeline Delay
N/A
N/A
3.5
DC Accuracy
Differential Nonlinearity
25ЊC
IV
Ϯ0.5
Integral Nonlinearity
25ЊC
IV
Ϯ0.5
Offset Error for Each 8-Bit ADC
25ЊC
IV
Ϯ0.75
Gain Error for Each 8-Bit ADC
25ЊC
IV
Ϯ4
Offset Matching Between 8-Bit ADCs
Full
IV
Ϯ3
Gain Matching Between 8-Bit ADCs
Full
IV
Ϯ4.5
Analog Input
Input Voltage Range
Full
IV
1
Input Capacitance
25ЊC
IV
1.4
Differential Input Resistance
25ЊC
IV
4
Aperture Delay
25ЊC
IV
2.0
Aperture Uncertainty (Jitter)
25ЊC
IV
1.2
Input Bandwidth (–3 dB)
25ЊC
IV
90
Input Referred Noise
25ЊC
IV
600
Reference Voltage Error
REFT8–REFB8 (0.5 V)
25ЊC
I
±4
± 92
Dynamic Performance (A_IN = –0.5 dB FS, f = 5 MHz)
Signal-to-Noise and Distortion Ratio (SINAD)
Full
II
43.5
48
AD9873
Unit
MHz
MHz
%
pF
MΩ
ps rms
Bits
mA
% FS
% FS
V
LSB
LSB
pF
dBc/Hz
V
dBc
dBc
dBc
dB
dB
dB
dB
Bits
MHz
ADC Cycles
LSB
LSB
% FSR
% FSR
LSB
LSB
V p-p
pF
kΩ
ns
ps rms
MHz
µV
mV
dB
REV. 0
–3–