Datasheet

–2–
AD9225–SPECIFICATIONS
(AVDD = 5 V, DRVDD = 5 V, f
SAMPLE
= 25 MSPS, VREF = 2.0 V, VINB = 2.5 V dc, T
MIN
to T
MAX
,
unless otherwise noted.)
Parameter Min Typ Max Unit
RESOLUTION 12 Bits
MAX CONVERSION RATE 25 MHz
INPUT REFERRED NOISE
VREF = 1.0 V 0.35 LSB rms
VREF = 2.0 V 0.17 LSB rms
ACCURACY
Integral Nonlinearity (INL) ±1.0 ±2.5 LSB
Differential Nonlinearity (DNL) ±0.4 ±1.0 LSB
No Missing Codes 12 Bits Guaranteed
Zero Error (@ 25∞C) ±0.3 ±0.6 % FSR
Gain Error (@ 25∞C)
1
±0.5 ±2.2 % FSR
Gain Error (@ 25∞C)
2
±0.4 ±1.7 % FSR
TEMPERATURE DRIFT
Zero Error ±2 ppm/∞C
Gain Error
1
±26 ppm/∞C
Gain Error
2
±0.4 ppm/∞C
POWER SUPPLY REJECTION
AVDD (+5 V ± 0.25 V) ±0.1 ±0.35 % FSR
ANALOG INPUT
Input Span 2 V p-p
4V p-p
Input (VINA or VINB) Range 0 V
AVDD V
Input Capacitance 10 pF
INTERNAL VOLTAGE REFERENCE
Output Voltage (1 V Mode) 1.0 V
Output Voltage Tolerance (1 V Mode) ±5 ±17 mV
Output Voltage (2.0 V Mode) 2.0 V
Output Voltage Tolerance (2.0 V Mode) ±10 ±35 mV
Output Current (Available for External Loads) 1.0 mA
Load Regulation
3
1.0 3.4 mV
REFERENCE INPUT RESISTANCE 8 kW
POWER SUPPLIES
Supply Voltages
AVDD 4.75 5 5.25 V (±5% AVDD Operating)
DRVDD 2.85 5.25 V (±5% DRVDD Operating)
Supply Currents
IAVDD 65 72.5 mA
IDRVDD 2.0 4.0 mA
POWER CONSUMPTION
External Reference 280 310 mW (VREF = 1 V)
335 373 mW (VREF = 2 V)
Internal Reference 290 mW (VREF = 1 V)
345 mW (VREF = 2 V)
NOTES
1
Includes internal voltage reference error.
2
Excludes internal voltage reference error.
3
Load regulation with 1 mA load current (in addition to that required by the AD9225).
Specifications subject to change without notice.
DC SPECIFICATIONS
Rev. C