LTC6952 datasheet(5/80 Pages) AD

5 / 80 page

LTC6952

6952f

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Preliminary Technical Data

Advance Product Information Subject to Change

Rev PrA

ELECTRICAL CHARACTERISTICS

SYMBOL PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Reference Inputs (REF+, REF–)

fREF

Input Frequency

500

MHz

VREF

Input Signal Level

Single-Ended

0.5

2.7

VP-P

Minimum Input Slew Rate

V/µs

Input Duty Cycle

Self-bias Voltage

1.65

1.85

2.25

Minimum Input Signal Detected

(REFOK=1)

PDREFPK = 0, fREF = 10MHz,

Single-Ended Sine Wave

350

mVP-P

Maximum Input Signal Not Detected

(REFOK=0)

PDREFPK = 0, fREF = 10MHz,

Single-Ended Sine Wave

100

mVP-P

Input Resistance

Differential

2.6

4.2

6.1

kΩ

Input Capacitance

Differential

1.3

VCO Input (VCO+, VCO–)

fVCO

Frequency Range

4500

MHz

Input Signal Level

RZ = 50Ω, Single-Ended

0.25

0.8

1.6

VP-P

–8

dBm

Self-Bias Voltage

2.05

Input Common Mode Voltage

800mVP-P Differential Input

1.6

2.7

Input Duty Cycle

Minimum Input Slew Rate

100

V/µs

Minimum Input Signal Detected

(VCOOK = 1)

PDVCOPK = 0, fVCO = 10MHz,

Single-Ended Sine Wave

350

mVP-P

Maximum Input Signal Not Detected

(VCOOK = 0)

PDVCOPK = 0, fVCO = 10MHz,

Single-Ended Sine Wave

100

mVP-P

Input Resistance

Single-Ended, Each Input

250

Input Capacitance

Single-Ended, Each Input

1.3

CMOS SYNC/SYSREF Request Input (EZS_SRQ+ Only)

High-level Input Voltage

EZS_SRQ– tied to GND

1.3

Low-level Input Voltage

EZS_SRQ– tied to GND

0.6

Input Voltage Hysteresis

EZS_SRQ– tied to GND

200

Input Current

EZS_SRQ– tied to GND

±1

µA

Differential SYNC/SYSREF Request Inputs (EZS_SRQ+ and EZS_SRQ–)

Input Signal Level

0.5

0.8

2.7

VP-P

Self-bias Voltage

1.8

2.1

2.4

Input Common Mode Voltage

800mVP-P Differential Input

1.5

3.0

Input Resistance

Differential

kΩ

Input Capacitance

Differential

Phase/Frequency Detector (PFD)

fPFD

Input Frequency

167

MHz

Charge Pump

ICP

Output Current Range

20 Settings (see Table 6)

0.42

11.2

Output Current Source/Sink Accuracy

All Settings, V(CP)= VCP+/2

±6

Output Current Source/Sink Matching

ICP = 420µA to 1.4mA, V(CP) = VCP+/2

±3

ICP = 1.68mA to 11.2mA, V(CP) = VCP+/2

±2

Output Current vs Output Voltage Sensitivity

(Note 7)

0.1

0.5

%/V

Output Current vs Temperature

V(CP) = VCP+/2

170

ppm/°C

The l denotes the specifications which apply over the full operating

junction temperature range, otherwise specifications are at TA = 25°C. VREF+ = VD+ = VVCO+ = VOUT+ = 3.3V, VCP+ = 5V unless otherwise

specified (Note 2). All voltages are with respect to GND.

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