ADF4007BCP datasheet(5/16 Pages) AD

5 / 16 page

ADF4007

Rev. 0 | Page 5 of 16

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

15 MUXOUT

14 M1

13 M2

12 N1

CPGND 1

AGND 2

AGND 3

11 N2

RFINB4

RFINA5

PIN1

INDICATOR

TOPVIEW

ADF4007

Figure 2. Pin Configuration

Table 3. Pin Function Descriptions

Pin No.

Mnemonic

Function

CPGND

Charge Pump Ground. The ground return path of the charge pump.

2, 3

AGND

Analog Ground. The ground return path of the prescaler.

RFINB

Complementary Input to the RF Prescaler. This point must be decoupled to the ground plane with a small bypass

capacitor, typically 100 pF.

RFINA

Input to the RF Prescaler. This small signal input is ac-coupled to the external VCO.

6, 7

AVDD

Analog Power Supply. This pin can range from 2.7 V to 3.3 V. Decoupling capacitors to the analog ground plane

should be placed as close as possible to this pin. AVDD must be the same value as DVDD.

REFIN

Reference Input. A CMOS input with a nominal threshold of VDD/2 and a dc equivalent input resistance of 100 kΩ.

This input can be driven from a TTL or CMOS crystal oscillator, or it can be ac-coupled.

9, 10

DGND

Digital Ground.

11, 12

N2, N1

These two bits set the N value. See Table 4.

13, 14

M2, M1

These two bits set the status of MUXOUT and PFD polarity. See Table 5.

MUXOUT

This multiplexer output allows either the N divider output or the R divider output to be accessed externally.

16, 17

DVDD

Digital Power Supply. This pin can range from 2.7 V to 3.3 V. Decoupling capacitors to the digital ground plane

should be placed as close as possible to this pin. DVDD must be the same value as AVDD.

Charge Pump Power Supply. This pin should be greater than or equal to VDD. In systems where VDD is 3 V, it can be

set to 5 V and used to drive a VCO with a tuning range of up to 5 V.

RSET

Connecting a resistor between this pin and CPGND sets the maximum charge pump output current. The nominal

voltage potential at the RSET pin is 0.66 V. The relationship between ICP and RSET is

SET

MAX

Therefore, if RSET = 5.1 kΩ, then ICP = 5 mA.

Charge Pump Output. When enabled, this pin provides ±ICP to the external loop filter, which in turn drives the

external VCO.

ADF4007BCP Datasheet(PDF) 5 Page - Analog Devices

ADF4007BCP Datasheet(HTML) 5 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Datasheet Download

Link URL