Datasheet

AD9954
Rev. B | Page 4 of 40
ELECTRICAL SPECIFICATIONS
Unless otherwise noted, AVDD, DVDD = 1.8 V ± 5%, DVDD_I/O = 3.3 V ± 5%, R
SET
= 3.92 kΩ, external reference clock frequency =
400 MHz. DAC output must be referenced to AVDD, not AGND.
Table 1.
Parameter Temp
Test
Level
Min Typ Max Unit
REF CLOCK INPUT CHARACTERISTICS
Frequency Range
REFCLK Multiplier Disabled Full VI 1 400 MHz
REFCLK Multiplier Enabled at 4× Full VI 20 100 MHz
REFCLK Multiplier Enabled at 20× Full VI 4 20 MHz
Crystal Oscillator Operating Frequency Full IV 20 30 MHz
Input Capacitance 25°C V 3 pF
Input Impedance 25°C V 1.5 kΩ
Duty Cycle 25°C V 50 %
Duty Cycle with REFCLK Multiplier Enabled 25°C V 35 65 %
REFCLK Input Voltage Swing Full IV 100 1000 mV p-p
DAC OUTPUT CHARACTERISTICS
Full-Scale Output Current 25°C 5 10 15 mA
Gain Error 25°C I –10 +10 %FS
Output Offset 25°C I 0.6 µA
Differential Nonlinearity 25°C V 1 LSB
Integral Nonlinearity 25°C V 2 LSB
Output Capacitance 25°C V 5 pF
Residual Phase Noise @ 1 kHz Offset, 40 MHz A
OUT
REFCLK Multiplier Enabled @ 20× 25°C V –105 dBc/Hz
REFCLK Multiplier Enabled @ 4× 25°C V –115 dBc/Hz
REFCLK Multiplier Disabled 25°C V –132 dBc/Hz
Voltage Compliance Range 25°C I AVDD – 0.5 AVDD + 0.5 V
Wideband SFDR
1 MHz to 10 MHz Analog Out 25°C V 73 dBc
10 MHz to 40 MHz Analog Out 25°C V 67 dBc
40 MHz to 80 MHz Analog Out 25°C V 62 dBc
80 MHz to 120 MHz Analog Out 25°C V 58 dBc
120 MHz to 160 MHz Analog Out 25°C V 52 dBc
Narrow-Band SFDR
40 MHz Analog Out (±1 MHz) 25°C V 87 dBc
40 MHz Analog Out (±250 kHz) 25°C V 89 dBc
40 MHz Analog Out (±50 kHz) 25°C V 91 dBc
40 MHz Analog Out (±10 kHz) 25°C V 93 dBc
80 MHz Analog Out (±1 MHz) 25°C V 85 dBc
80 MHz Analog Out (±250 kHz) 25°C V 87 dBc
80 MHz Analog Out (±50 kHz) 25°C V 89 dBc
80 MHz Analog Out (±10 kHz) 25°C V 91 dBc
120 MHz Analog Out (±1 MHz) 25°C V 83 dBc
120 MHz Analog Out (±250 kHz) 25°C V 85 dBc
120 MHz Analog Out (±50 kHz) 25°C V 87 dBc
120 MHz Analog Out (±10 kHz) 25°C V 89 dBc
160 MHz Analog Out (±1 MHz) 25°C V 81 dBc
160 MHz Analog Out (±250 kHz) 25°C V 83 dBc
160 MHz Analog Out (±50 kHz) 25°C V 85 dBc
160 MHz Analog Out (±10 kHz) 25°C V 87 dBc