AD9959

Preliminary Technical Data

Rev. PrB | Page 2 of 9

AD9959—SPECIFICATIONS

Frequency = 500 MSPS (REF_CLK multiplier bypassed)

Parameter

Min

Typ

Max

Units

Test Conditions/Comments

REF CLOCK INPUT CHARACTERISTICS

REF_CLK inputs must be AC

coupled due to internal biasing

Frequency Range

REF_CLK Multiplier bypassed

0

500

MHz

REF_CLK Multiplier enabled at 4x(min)

25

125

MHz

REF_CLK Multiplier enabled at 20x(max)

5

25

MHz

Internal VCO range w/ REF_CLK multiplier enabled

100

500

MHz

Crystal REF_CLK source mode

20

30

MHz

Input Power Sensitivity

-15

3

dBm

External 50 ohm termination

Input voltage level

400

mV

Input Capacitance

3

pF

Input Impedance

1500

ohms

Duty Cycle w/ REF_CLK Multiplier bypassed

50

%

Duty Cycle w/ REF_CLK Multiplier enabled

35

65

%

CLK Mode Select logic 1 Voltage

1.25

V

Not a 3.3V digital input

CLK Mode Select logic 0 Voltage

0.6

V

Not a 3.3V digital input

DAC OUTPUT CHARACTERISTICS

Must be referenced to AVDD

Resolution

10

Bits

Full Scale Ouput Current

10

mA

Gain Error

-10

10

%FS

Output Offset

0.6

uA

Differential Nonlinearity

-0.5

0.5

LSB

Integral Nonlinearity

-1

1

LSB

Output Capactiance

5

pF

Voltage Compliance Range

AVDD–

0.50

AVDD

+ 0.50

V

Channel to Channel Isolation

60

dB

Channel to Channel amplitude matching error

2

%

WIDEBAND SFDR

Wideband SFDR defined as DC to

Nyquist

1-20

MHz Analog Out

-65

dBc

20-60 MHz Analog Out

-62

dBc

60-100 MHz Analog Out

-59

dBc

100-150 MHz Analog Out

-56

dBc

150-200 MHz Analog Out

-54

dBc

NARROWBAND SFDR

1.1 MHz Analog Out (+/- 10kHz)

-90

dBc

1.1 MHz Analog Out (+/- 50kHz)

-88

dBc

1.1 MHz Analog Out (+/- 250kHz)

-86

dBc

1.1 MHz Analog Out (+/- 1MHz)

-85

dBc

15.1 MHz Analog Out (+/- 10kHz)

-90

dBc

15.1 MHz Analog Out (+/- 50kHz)

-87

dBc

15.1 MHz Analog Out (+/- 250kHz)

-85

dBc

15.1 MHz Analog Out (+/- 1MHz)

-83

dBc

40.1 MHz Analog Out (+/- 10kHz)

-90

dBc

40.1 MHz Analog Out (+/- 50kHz)

-87

dBc

40.1 MHz Analog Out (+/- 250kHz)

-84

dBc

40.1 MHz Analog Out (+/- 1MHz)

-82

dBc