AD9956
Rev. A | Page 5 of 32
Parameter Min Typ Max Unit Test Conditions/Comments
LOGIC INPUTS (SDI/O, I/O_RESET, RESET,
I/O_UPDATE, PS0 to PS2, SYNC_IN)
V
IH
, Input High Voltage 2.0 V
V
IL
, Input Low Voltage 0.8 V
I
INH
, I
INL
Input Current ±1 ±5 µA
C
IN
, Maximum Input Capacitance 3 pF
LOGIC OUTPUTS (SDO, SYNC_OUT, PLL_LOCK)
6
V
OH
, Output High Voltage 2.7 V
V
OH
, Output Low Voltage 0.4 V
I
OH
100 µA
I
OL
100 µA
POWER CONSUMPTION
Total Power Consumed, All Functions On 400 mW
IAVDD 85 mA
IDVDD 45 mA
IDVDD_I/O 20 mA
ICP_VDD 15 mA
Power-Down Mode 80 mW
WAKE-UP TIME (from Power-Down Mode)
Digital Power-Down (CFR1<7>) 12 ns
DAC Power-Down (CFR2<39>) 7 µs
RF Divider Power-Down (CFR2<23>) 400 ns
Clock Driver Power-Down (CFR2<20>) 6 µs
Charge Pump Full Power-Down (CFR2<4>) 10 µs
Charge Pump Quick Power-Down (CFR2<3>) 150 ns
DAC OUTPUT CHARACTERISTICS
Resolution 14 Bits
Full-Scale Output Current 10 15 mA
Gain Error −10 +10 % FS
Output Offset 0.6 µA
Output Capacitance 5 pF
Voltage Compliance Range AVDD − 0.50 AVDD + 0.50 V
Wideband SFDR (DC to Nyquist)
10 MHz Analog Out −64 dBc
40 MHz Analog Out −62 dBc
80 MHz Analog Out −60 dBc
120 MHz Analog Out −55 dBc
160 MHz Analog Out −55 dBc
Narrowband SFDR
10 MHz Analog Out (±1 MHz) −89 dBc
10 MHz Analog Out (±250 kHz) −91 dBc
10 MHz Analog Out (±50 kHz) −93 dBc
40 MHz Analog Out (±1 MHz) −87 dBc
40 MHz Analog Out (±250 kHz) −89 dBc
40 MHz Analog Out (±50 kHz) −91 dBc
80 MHz Analog Out (±1 MHz) −85 dBc
80 MHz Analog Out (±250 kHz) −87 dBc
80 MHz Analog Out (±50 kHz) −89 dBc
120 MHz Analog Out (±1 MHz) −83 dBc
120 MHz Analog Out (±250 kHz) −85 dBc
120 MHz Analog Out (±50 kHz) −87 dBc
