Datasheet

REV. A–2–
AD9243–SPECIFICATIONS
DC SPECIFICATIONS
Parameter AD9243 Units
RESOLUTION 14 Bits min
MAX CONVERSION RATE 3 MHz min
INPUT REFERRED NOISE
V
REF
= 1 V 0.9 LSB rms typ
V
REF
= 2.5 V 0.36 LSB rms typ
ACCURACY
Integral Nonlinearity (INL) ±2.5 LSB typ
Differential Nonlinearity (DNL) ±0.6 LSB typ
±1.0 LSB max
INL
1
±2.5 LSB typ
DNL
1
±0.7 LSB typ
No Missing Codes 14 Bits Guaranteed
Zero Error (@ +25°C) 0.3 % FSR max
Gain Error (@ +25°C)
2
1.5 % FSR max
Gain Error (@ +25°C)
3
0.75 % FSR max
TEMPERATURE DRIFT
Zero Error 3.0 ppm/°C typ
Gain Error
2
20.0 ppm/°C typ
Gain Error
3
5.0 ppm/°C typ
POWER SUPPLY REJECTION 0.1 % FSR max
ANALOG INPUT
Input Span (with V
REF
= 1.0 V) 2 V p-p min
Input Span (with V
REF
= 2.5 V) 5 V p-p max
Input (VINA or VINB) Range 0 V min
AVDD V max
Input Capacitance 16 pF typ
INTERNAL VOLTAGE REFERENCE
Output Voltage (1 V Mode) 1 Volts typ
Output Voltage Tolerance (1 V Mode) ±14 mV max
Output Voltage (2.5 V Mode) 2.5 Volts typ
Output Voltage Tolerance (2.5 V Mode) ±35 mV max
Load Regulation
4
2.0 mV max
REFERENCE INPUT RESISTANCE 5 kΩ typ
POWER SUPPLIES
Supply Voltages
AVDD +5 V (±5% AVDD Operating)
DVDD +5 V (±5% DVDD
Operating)
DRVDD +5 V (±5% DRVDD
Operating)
Supply Current
IAVDD 23.0 mA max (20 mA typ)
IDRVDD 1.0 mA max (0.5 mA typ)
IDVDD 5.0 mA max (3.5 mA typ)
POWER CONSUMPTION 110 mW typ
145 mW max
NOTES
1
V
REF
=1 V.
2
Including internal reference.
3
Excluding internal reference.
4
Load regulation with 1 mA load current (in addition to that required by the AD9243).
Specification subject to change without notice.
(AVDD = +5 V, DVDD = +5 V, DRVDD = +5 V, f
SAMPLE
= 3 MSPS, VREF = 2.5 V, VINB = 2.5 V, T
MIN
to T
MAX
unless
otherwise noted)