Data Sheet

ADF4108

Rev. E | Page 3 of 20

SPECIFICATIONS

AVDD = DVDD = 3.3 V ± 2%, AVDD ≤ VP ≤ 5.5 V, AGND = DGND = CPGND = 0 V, RSET = 5.1 kΩ, dBm referred to 50 Ω, TA = TMIN to

TMAX, unless otherwise noted.

Table 1.

Parameter

B Version1

B Chips2

(Typ)

Unit

Test Conditions/Comments

RF CHARACTERISTICS

See Figure 11 for input circuit

RF Input Frequency (RFIN)

1.0/8.0

1.0/8.0

GHz min/max

For lower frequencies, ensure slew rate (SR) > 320 V/µs

RF Input Sensitivity

−5/+5

−5/+5

dBm min/max

Maximum Allowable Prescaler

Output Frequency3

300

300

MHz max

P = 8

325

325

MHz max

P = 16

REFIN CHARACTERISTICS

REFIN Input Frequency

20/250

20/250

MHz min/max

For f < 20 MHz, ensure SR > 50 V/µs

REFIN Input Sensitivity4

0.8/VDD

0.8/VDD

V p-p min/max

Biased at AVDD/25

REFIN Input Capacitance

10

10

pF max

REFIN Input Current

±100

±100

µA max

PHASE DETECTOR

Phase Detector Frequency6

104

104

MHz max

CHARGE PUMP

Programmable; see Figure 18

ICP Sink/Source

High Value

5

5

mA typ

With RSET = 5.1 kΩ

Low Value

625

625

µA typ

Absolute Accuracy

2.5

2.5

% typ

With RSET = 5.1 kΩ

RSET Range

3.0/11

3.0/11

kΩ typ

See Figure 18

ICP Three-State Leakage

1

1

nA typ

1 nA typical; TA = 25°C

Sink and Source Current Matching

2

2

% typ

0.5 V ≤ VCP ≤ VP − 0.5 V

ICP vs. VCP

1.5

1.5

% typ

0.5 V ≤ VCP ≤ VP − 0.5 V

ICP vs. Temperature

2

2

% typ

VCP = VP/2

LOGIC INPUTS

VIH, Input High Voltage

1.4

1.4

V min

VIL, Input Low Voltage

0.6

0.6

V max

IINH, IINL, Input Current

±1

±1

µA max

CIN, Input Capacitance

10

10

pF max

LOGIC OUTPUTS

VOH, Output High Voltage

1.4

1.4

V min

Open-drain output chosen; 1 kΩ pull-up resistor to 1.8 V

VOH, Output High Voltage

VDD − 0.4

VDD − 0.4

V min

CMOS output chosen

IOH, Output High Current

100

100

µA max

VOL, Output Low Voltage

0.4

0.4

V max

IOL = 500 µA

POWER SUPPLIES

AVDD

3.2/3.6

3.2/3.6

V min/max

DVDD

AVDD

AVDD

VP

AVDD/5.5

AVDD/5.5

V min/max

AVDD ≤ VP ≤ 5.5 V

IDD (AIDD + DIDD)7

17

17

mA max

15 mA typ

IP

0.4

0.4

mA max

TA = 25°C

Power-Down Mode (AIDD + DIDD)8

10

10

µA typ