AD9959SLASHPCBZ1 datasheet(4/44 Pages) AD

4 / 44 page

AD9959

Rev. B | Page 4 of 44

SPECIFICATIONS

AVDD and DVDD = 1.8 V ± 5%; DVDD_I/O = 3.3 V ± 5%; T = 25°C; RSET = 1.91 kΩ; external reference clock frequency = 500 MSPS

(REFCLK multiplier bypassed), unless otherwise noted.

Table 1.

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

REFERENCE CLOCK INPUT CHARACTERISTICS

See Figure 34 and Figure 35

Frequency Range

REFCLK Multiplier Bypassed

500

MHz

REFCLK Multiplier Enabled

125

MHz

Internal VCO Output Frequency Range

VCO Gain Control Bit Set High1

255

500

MHz

VCO Gain Control Bit Set Low1

100

160

MHz

Crystal REFCLK Source Range

MHz

Input Level

200

1000

Measured at each pin (single-ended)

Input Voltage Bias Level

1.15

Input Capacitance

Input Impedance

1500

Duty Cycle with REFCLK Multiplier Bypassed

Duty Cycle with REFCLK Multiplier Enabled

CLK Mode Select (Pin 24) Logic 1 Voltage

1.25

1.8

1.8 V digital input logic

CLK Mode Select (Pin 24) Logic 0 Voltage

0.5

1.8 V digital input logic

DAC OUTPUT CHARACTERISTICS

Must be referenced to AVDD

Resolution

Bits

Full-Scale Output Current

1.25

Gain Error

−10

+10

%FS

Channel-to-Channel Output Amplitude Matching Error

−2.5

+2.5

Output Current Offset

μA

Differential Nonlinearity

±0.5

LSB

Integral Nonlinearity

±1.0

LSB

Output Capacitance

Voltage Compliance Range

AVDD − 0.50

AVDD + 0.50

Channel-to-Channel Isolation

DAC supplies tied together

(see Figure 19)

WIDEBAND SFDR

The frequency range for wideband

SFDR is defined as dc to Nyquist

1 MHz to 20 MHz Analog Output

−65

dBc

20 MHz to 60 MHz Analog Output

−62

dBc

60 MHz to 100 MHz Analog Output

−59

dBc

100 MHz to 150 MHz Analog Output

−56

dBc

150 MHz to 200 MHz Analog Output

−53

dBc

NARROW-BAND SFDR

1.1 MHz Analog Output (±10 kHz)

−90

dBc

1.1 MHz Analog Output (±50 kHz)

−88

dBc

1.1 MHz Analog Output (±250 kHz)

−86

dBc

1.1 MHz Analog Output (±1 MHz)

−85

dBc

15.1 MHz Analog Output (±10 kHz)

−90

dBc

15.1 MHz Analog Output (±50 kHz)

−87

dBc

15.1 MHz Analog Output (±250 kHz)

−85

dBc

15.1 MHz Analog Output (±1 MHz)

−83

dBc

40.1 MHz Analog Output (±10 kHz)

−90

dBc

40.1 MHz Analog Output (±50 kHz)

−87

dBc

40.1 MHz Analog Output (±250 kHz)

−84

dBc

40.1 MHz Analog Output (±1 MHz)

−82

dBc

75.1 MHz Analog Output (±10 kHz)

−87

dBc

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