AD9531 datasheet(9/88 Pages) AD

9 / 88 page

Data Sheet

AD9531

Rev. 0 | Page 9 of 88

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

Common-Mode Internally

Generated Bias Voltage

1.0

Hysteresis

Differential Input Resistance

kΩ

Differential Input Capacitance

Duty Cycle

Required for input frequencies below 20 MHz; limited by spurious

performance when ×2 frequency multiplier is in use

CMOS MODE SINGLE-ENDED INPUT

Single-ended operation is only applicable to the REF1_AP and

REF1_BP pins; for both of these inputs, the 2.5 V or 3.3 V mode

is selectable via Register 0x0103

Input Frequency Range

×2 Frequency Multiplier

Bypassed

9.5

260

MHz

Enabled

9.5

100

MHz

Hysteresis

430

Input Resistance

kΩ

Input Capacitance

Duty Cycle

Required for input frequencies below 20 MHz; limited by spurious

performance when ×2 frequency multiplier is in use.

3.3 V Operating Mode

Input Voltage

Bias

1.65

50% of 3.3 V supply, Pin 23 (VDD1_3V3)

High

2.0

Low

1.3

2.5 V Operating Mode

Input Voltage

Bias

1.25

38% of 3.3 V supply, Pin 23 (VDD1_3V3)

High

1.5

Low

0.9

PLL1 Distribution Clock Outputs (OUT1_0x to OUT1_9x)

Table 7.

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

HSTL MODE

Specifications assume a 100 Ω termination across the

differential output pins

Output Frequency

400

MHz

Rise/Fall Time (20% to 80%)

120

170

Listed values are for the edge (rising or falling) with the

lesser rate of change (|δv/δt|)

Duty Cycle

Up to fOUT = 400 MHz

Differential Output Voltage Swing

950

Magnitude of voltage across pins; output driver static

Common-Mode Output Voltage

870

Output driver static

CMOS MODE

Output Frequency

150

MHz

10 pF load

Rise/Fall Time (20% to 80%)

1.0

10 pF load; listed value is for the edge (rising or falling)

with the lesser rate of change (|δv/δt|)

Duty Cycle

10 pF load

Output Voltage High (VOH)

VDD − 0.2

Relative to the VDD1_03, VDD1_47, and VDD1_89 pins,

with the output driver static and IOH = 1 mA

Output Voltage Low (VOL)

0.2

Output driver static and IOL = 1 mA

AD9531 Datasheet(PDF) 9 Page - Analog Devices

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