Datasheet

AD9260
Rev. C | Page 3 of 44
SPECIFICATIONS
CLOCK INPUT FREQUENCY RANGE
Table 1.
Parameter—Decimation Factor (N) AD9260 (8) AD9260 (4) AD9260 (2) AD9260 (1) Unit
CLOCK INPUT (Modulator Sample Rate, f
CLOCK
) 1 1 1 1 kHz min
20 20 20 20 MHz max
OUTPUT WORD RATE (FS = f
CLOCK
/N) 0.125 0.250 0.500 1 kHz min
2.5 5 10 20 MHz max
DC SPECIFICATIONS
AVDD = +5 V, DVDD = +3 V, DRVDD = +3 V, f
CLOCK
= 20 MSPS, V
REF
= +2.5 V, Input CML = 2.0 V T
MIN
to T
MAX
unless otherwise noted,
R
BIAS
= 2 kΩ.
Table 2.
Parameter—Decimation Factor (N) AD9260 (8) AD9260 (4) AD9260 (2) AD9260 (1) Unit
RESOLUTION 16 16 16 12 Bits min
INPUT REFERRED NOISE (TYP)
1.0 V Reference 1.40 2.4 6.0 1.3 LSB rms typ
2.5 V Reference
1
0.68 (90.6) 1.2 (86) 3.7 (76) 1.0 (63.2) LSB rms typ (dB typ)
ACCURACY
Integral Nonlinearity (INL) ± 0.75 ± 0.75 ± 0.75 ± 0.3 LSB typ
Differential Nonlinearity (DNL) ± 0.50 ± 0.50 ± 0.50 ± 0.25 LSB typ
No Missing Codes 16 16 16 12 Bits Guaranteed
Offset Error 0.9 (0.5) (0.5) (0.5) (0.5) % FSR max (typ @ +25°C)
Gain Error
2
2.75 (0.66) (0.66) (0.66) (0.66) % FSR max (typ @ +25°C)
Gain Error
3
1.35 (0.7) (0.7) (0.7) (0.7) % FSR max (typ @ +25°C)
TEMPERATURE DRIFT
Offset Error 2.5 2.5 2.5 2.5 ppm/°C typ
Gain Error
2
22 22 22 22 ppm/°C typ
Gain Error
3
7.0 7.0 7.0 7.0 ppm/°C typ
POWER SUPPLY REJECTION
AVDD, DVDD, DRVDD (+5 V ±0.25 V) 0.06 0.06 0.06 0.06 % FSR max
ANALOG INPUT
Input Span
V
REF
= 1.0 V 1.6 1.6 1.6 1.6 V p p Diff. max
V
REF
= 2.5 V 4.0 4.0 4.0 4.0 V p p Diff. max
Input (VINA or VINB) Range +0.5 +0.5 +0.5 +0.5 V min
+AVDD –0.5 +AVDD –0.5 +AVDD –0.5 +AVDD –0.5 V max
Input Capacitance 10.2 10.2 10.2 10.2 pF typ
INTERNAL VOLTAGE REFERENCE
Output Voltage (1 V Mode) 1 1 1 1 V typ
Output Voltage Error (1 V Mode) ± 14 ± 14 ± 14 ± 14 mV max
Output Voltage (2.5 V Mode) 2.5 2.5 2.5 2.5 V typ
Output Voltage Error (2.5 V Mode) ± 35 ± 35 ± 35 ± 35 mV max
Load Regulation
4
1 V REF 0.5 0.5 0.5 0.5 mV max
2.5 V REF 2.0 2.0 2.0 2.0 mV max
REFERENCE INPUT RESISTANCE 8 8 8 8 kΩ
POWER SUPPLIES
Supply Voltages
AVDD +5 +5 +5 +5 V (± 5%)