Datasheet

AD9540
Rev. A | Page 7 of 32
Parameter Min Typ Max Unit Test Conditions/Comments
I/O_Update to SYNC_OUT Setup Time 7 ns
PS[2:0> to SYNC_OUT Setup Time 7 ns
Latencies/Pipeline Delays
I/O_Update to DAC Frequency Change 33 SYSCLK cycles
I/O_Update to DAC Phase Change 33 SYSCLK cycles
PS[2:0] to DAC Frequency Change 29 SYSCLK cycles
PS[2:0] to DAC Phase Change 29 SYSCLK cycles
I/O_Update to CP_OUT Scaler Change 4 SYSCLK cycles
I/O_Update to Frequency Accumulator
Step Size Change
4 SYSCLK cycles
DAC OUTPUT CHARACTERISTICS
Resolution 10 Bits
Full-Scale Output Current 10 15 mA
Gain Error −10 +10 % f
S
Output Offset 0.6 µA
Output Capacitance 5 pF
Voltage Compliance Range AVDD − 0.50 AVDD + 0.50
Wideband SFDR (DC to Nyquist)
10 MHz Analog Out 65 dBc
40 MHz Analog Out 62 dBc
80 MHz Analog Out 57 dBc
120 MHz Analog Out 56 dBc
160 MHz Analog Out 54 dBc
Narrow-Band SFDR
10 MHz Analog Out (±1 MHz) 83 dBc
10 MHz Analog Out (±250 kHz) 85 dBc
10 MHz Analog Out (±50 kHz) 86 dBc
40 MHz Analog Out (±1 MHz) 82 dBc
40 MHz Analog Out (±250 kHz) 84 dBc
40 MHz Analog Out (±50 kHz) 87 dBc
80 MHz Analog Out (±1 MHz) 80 dBc
80 MHz Analog Out (±250 kHz) 82 dBc
80 MHz Analog Out (±50 kHz) 86 dBc
120 MHz Analog Out (±1 MHz) 80 dBc
120 MHz Analog Out (±250 kHz) 82 dBc
120 MHz Analog Out (±50 kHz) 84 dBc
160 MHz Analog Out (±1 MHz) 80 dBc
160 MHz Analog Out (±250 kHz) 82 dBc
160 MHz Analog Out (±50 kHz) 84 dBc
DAC RESIDUAL PHASE NOISE
19.7 MHz F
OUT
@ 10 Hz Offset 122 dBc/Hz
@ 100 Hz Offset 134 dBc/Hz
@ 1 kHz Offset 143 dBc/Hz
@ 10 kHz Offset 150 dBc/Hz
@ 100 kHz Offset 158 dBc/Hz
>1 MHz Offset 160 dBc/Hz