AD9481
Rev. 0 | Page 3 of 28
DC SPECIFICATIONS
AVDD = 3.3 V, DRVDD = 3.3 V; TMIN = 40°C, TMAX = +85°C, AIN = 1 dBFS, full scale = 1.0 V, internal reference, differential analog and
clock inputs, unless otherwise noted.
Table 1.
AD9481-250
Parameter
Temp
Test Level
Min
Typ
Max
Unit
RESOLUTION
8
Bits
ACCURACY
No Missing Codes
Full
VI
Guaranteed
Offset Error
25°C
I
40
mV
25°C
I
6.0
% FS
Differential Nonlinearity (DNL)
Full
VI
0.85
±0.35
0.85
LSB
Integral Nonlinearity (INL)
Full
VI
0.9
±0.26
0.9
LSB
TEMPERATURE DRIFT
Offset Error
Full
V
30
V/°C
Gain Error
Full
V
0.03
% FS/°C
Reference
Full
V
±0.025
mV/°C
REFERENCE
Internal Reference Voltage
Full
VI
0.97
1.0
1.03
V
25°C
IV
1.5
mA
25°C
I
100
A
25°C
I
10
A
ANALOG INPUTS (VIN+, VIN)
Differential Input Voltage Range
4Full
V
1
V p-p
Common-Mode Voltage
Full
VI
1.6
1.9
2.1
V
Input Resistance
Full
VI
8.4
10
11.2
k
Input Capacitance
25°C
V
4
pF
Analog Bandwidth, Full Power
25°C
V
750
MHz
POWER SUPPLY
AVDD
Full
IV
3.0
3.3
3.6
V
DRVDD
Full
IV
3.0
3.3
3.6
V
Supply Currents
Full
VI
133
145
mA
Full
VI
39
42.5
mA
25°C
V
439
mW
Power-Down Dissipation
25°C
V
15
37
mW
Power Supply Rejection Ratio (PSRR)
25°C
V
4.2
mV/V
1 Gain error and gain temperature coefficients are based on the ADC only (with a fixed 1 V external reference and 1 V p-p input range).
2 Internal reference mode; SENSE = AGND.
3 External reference mode; VREF driven by external 1.0 V reference; SENSE = AVDD.
4 In FS = 1 V, both analog inputs are 500 mV p-p and out of phase with each other.
5 Supply current measured with rated encode and a 20 MHz analog input. Power dissipation measured with dc input, see the T rate.