–2–
AD9280–SPECIFICATIONS
(AVDD = +3 V, DRVDD = +3 V, FS = 32 MHz (50% Duty Cycle), MODE = AVDD, 2 V Input
Span from 0.5 V to 2.5 V, External Reference, TMIN to TMAX unless otherwise noted)
Parameter
Symbol
Min
Typ
Max
Units
Condition
RESOLUTION
8
Bits
CONVERSION RATE
FS
32
MHz
DC ACCURACY
Differential Nonlinearity
DNL
±0.2
±1.0
LSB
REFTS = 2.5 V, REFBS = 0.5 V
Integral Nonlinearity
INL
±0.3
±1.5
LSB
Offset Error
EZS
±0.2
±1.8
% FSR
Gain Error
EFS
±1.2
±3.9
% FSR
REFERENCE VOLTAGES
Top Reference Voltage
REFTS
1
AVDD
V
Bottom Reference Voltage
REFBS
GND
AVDD – 1 V
Differential Reference Voltage
2
V p-p
Reference Input Resistance
1
10
k
REFTS, REFBS: MODE = AVDD
4.2
k
Between REFTF & REFBF: MODE = AVSS
ANALOG INPUT
Input Voltage Range
AIN
REFBS
REFTS
V
REFBS Min = GND: REFTS Max = AVDD
Input Capacitance
CIN
1
pF
Switched
Aperture Delay
tAP
4ns
Aperture Uncertainty (Jitter)
tAJ
2ps
Input Bandwidth (–3 dB)
BW
Full Power (0 dB)
300
MHz
DC Leakage Current
43
A
Input =
±FS
INTERNAL REFERENCE
Output Voltage (1 V Mode)
VREF
1
V
REFSENSE = VREF
Output Voltage Tolerance (1 V Mode)
±10
±25
mV
Output Voltage (2 V Mode)
VREF
2
V
REFSENSE = GND
Load Regulation (1 V Mode)
0.5
2
mV
1 mA Load Current
POWER SUPPLY
Operating Voltage
AVDD
2.7
3
5.5
V
DRVDD
2.7
3
5.5
V
Supply Current
IAVDD
31.7
36.7
mA
AVDD = 3 V, MODE = AVSS
Power Consumption
PD
95
110
mW
AVDD = DRVDD = 3 V, MODE = AVSS
Power-Down
4
mW
STBY = AVDD, MODE and CLOCK
= AVSS
Gain Error Power Supply Rejection
PSRR
1
% FS
DYNAMIC PERFORMANCE (AIN = 0.5 dBFS)
Signal-to-Noise and Distortion
SINAD
f = 3.58 MHz
46.4
49
dB
f = 16 MHz
48
dB
Effective Bits
f = 3.58 MHz
7.8
Bits
f = 16 MHz
7.7
Bits
Signal-to-Noise
SNR
f = 3.58 MHz
47.8
49
dB
f = 16 MHz
48
dB
Total Harmonic Distortion
THD
f = 3.58 MHz
–62
–49.5
dB
f = 16 MHz
–58
dB
Spurious Free Dynamic Range
SFDR
f = 3.58 MHz
66
51.4
dB
f = 16 MHz
61
dB
Differential Phase
DP
0.2
Degree
NTSC 40 IRE Mod Ramp
Differential Gain
DG
0.08
%
REV. E