ADF4159 datasheet(4/36 Pages) AD

4 / 36 page

ADF4159

Data Sheet

Rev. B | Page 4 of 36

Parameter1

Min

Typ

Max

Unit

Test Conditions/Comments

NOISE CHARACTERISTICS

Normalized Phase Noise Floor3

PLL loop BW = 1 MHz

Integer-N Mode

−224

dBc/Hz

FRAC = 0

Fractional-N Mode

−217

dBc/Hz

Normalized 1/f Noise (PN1_f)4

−120

dBc/Hz

Measured at 10 kHz offset, normalized

to 1 GHz

Phase Noise Performance5

At VCO output

12,002 MHz Output6

−96

dBc/Hz

At 50 kHz offset, 100 MHz PFD frequency

Operating temperature: −40°C to +125°C.

Guaranteed by design. Sample tested to ensure compliance.

This specification can be used to calculate phase noise for any application. Use the formula ((Normalized Phase Noise Floor) + 10 log(fPFD) + 20 logN) to calculate

in-band phase noise performance as seen at the VCO output.

The PLL phase noise is composed of flicker (1/f) noise plus the normalized PLL noise floor. The formula for calculating the 1/f noise contribution at an RF frequency (fRF)

and at an offset frequency (f) is given by PN = PN1_f + 10 log(10 kHz/f) + 20 log(fRF/1 GHz). Both the normalized phase noise floor and flicker noise are modeled in ADIsimPLL.

The phase noise is measured with the EV-ADF4159EB3Z and the Rohde & Schwarz FSUP signal source analyzer.

fREFIN = 100 MHz; fPFD = 100 MHz; offset frequency = 50 kHz; RFOUT = 12,002 MHz; N = 120.02; loop bandwidth = 250 kHz.

TIMING SPECIFICATIONS

AVDD = VP = 2.7 V to 3.45 V, DVDD = SDVDD = 1.8 V, AGND = DGND = SDGND = CPGND = 0 V, TA = TMIN to TMAX, dBm referred to 50 Ω,

unless otherwise noted.

Table 2. Write Timing

Parameter

Limit at TMIN to TMAX

Unit

Description

ns min

LE setup time

ns min

DATA to CLK setup time

ns min

DATA to CLK hold time

ns min

CLK high duration

ns min

CLK low duration

ns min

CLK to LE setup time

ns min

LE pulse width

Write Timing Diagram

CLK

DATA

DB30

DB1

(CONTROL BIT C2)

DB2

(CONTROL BIT C3)

DB0 (LSB)

(CONTROL BIT C1)

DB31 (MSB)

Figure 2. Write Timing Diagram

ADF4159 Datasheet(PDF) 4 Page - Analog Devices

ADF4159 Datasheet(HTML) 4 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

Datasheet Download

Link URL