Datasheet
AD9776A/AD9778A/AD9779A
Rev. B | Page 5 of 56
SPECIFICATIONS
DC SPECIFICATIONS
T
MIN
to T
MAX
, AVDD33 = 3.3 V, DVDD33 = 3.3 V, DVDD18 = 1.8 V, CVDD18 = 1.8 V, I
OUTFs
= 20 mA, maximum sample rate, unless
otherwise noted.
Table 1.
AD9776A AD9778A AD9779A
Parameter Min Typ Max Min Typ Max Min Typ Max Unit
RESOLUTION 12 14 16 Bits
ACCURACY
Differential Nonlinearity (DNL) ±0.1 ±0.65 ±2.1 LSB
Integral Nonlinearity (INL) ±0.86 ±1.5 ±6.0 LSB
MAIN DAC OUTPUTS
Offset Error −0.001 0 +0.001 −0.001 0 +0.001 −0.001 0 +0.001 % FSR
Gain Error (with Internal Reference) ±2 ±2 ±2 % FSR
Full-Scale Output Current
1
8.66 20.2 31.66 8.66 20.2 31.66 8.66 20.2 31.66 mA
Output Compliance Range −1.0 +1.0 −1.0 +1.0 −1.0 +1.0 V
Output Resistance 10 10 10 MΩ
Gain DAC Monotonicity Guaranteed Guaranteed Guaranteed
MAIN DAC TEMPERATURE DRIFT
Offset 0.04 0.04 0.04 ppm/°C
Gain 100 100 100 ppm/°C
Reference Voltage 30 30 30 ppm/°C
AUXILIARY DAC OUTPUTS
Resolution 10 10 10 Bits
Full-Scale Output Current
1
−1.998 +1.998 −1.998 +1.998 −1.998 +1.998 mA
Output Compliance Range (Source) 0 1.6 0 1.6 0 1.6 V
Output Compliance Range (Sink) 0.8 1.6 0.8 1.6 0.8 1.6 V
Output Resistance 1 1 1 MΩ
Auxiliary DAC Monotonicity Guaranteed Guaranteed Guaranteed
REFERENCE
Internal Reference Voltage 1.2 1.2 1.2 V
Output Resistance 5 5 5 kΩ
ANALOG SUPPLY VOLTAGES
AVDD33 3.13 3.3 3.47 3.13 3.3 3.47 3.13 3.3 3.47 V
CVDD18 1.70 1.8 2.05 1.70 1.8 2.05 1.70 1.8 2.05 V
DIGITAL SUPPLY VOLTAGES
DVDD33 3.13 3.3 3.47 3.13 3.3 3.47 3.13 3.3 3.47 V
DVDD18 1.70 1.8 2.05 1.70 1.8 2.05 1.70 1.8 2.05 V
POWER CONSUMPTION
2
1× Mode, f
DAC
= 100 MSPS, IF = 1 MHz 250 300 250 300 250 300 mW
2× Mode, f
DAC
= 320 MSPS, IF = 16 MHz, PLL Off 498 498 498 mW
2× Mode, f
DAC
= 320 MSPS, IF = 16 MHz, PLL On 588 588 588 mW
4× Mode, f
DAC
/4 Modulation, f
DAC
= 500 MSPS,
IF = 137.5 MHz, Q DAC Off
572 572 572 mW
8× Mode, f
DAC
/4 Modulation, f
DAC
= 1 GSPS,
IF = 262.5 MHz
980 980 980 mW
Power-Down Mode 2.5 9.8 2.5 9.8 2.5 9.8 mW
Power Supply Rejection Ratio, AVDD33 −0.3 +0.3 −0.3 +0.3 −0.3 +0.3 % FSR/V
OPERATING RANGE −40 +25 +85 −40 +25 +85 −40 +25 +85 °C
1
Based on a 10 kΩ external resistor.
2
See the Power Dissipation section for more details.