ADF4111BRUZ-RL7

射频锁相环频率合成器 RF PLL Frequency Synthesizers

Product Details

The ADF4110 family of frequency synthesizers can be used to implement local oscillators in the up-conversion and down-conversion sections of wireless receivers and transmitters. They consist of low-noise digital PFD Phase Frequency Detector, a precision charge pump, a programmable reference divider, programmable A and B counters and a dual modulus prescaler P/P+1. The A 6-bit and B 13-bit counters, in conjunction with the dual modulus prescaler P/P+1, implement an N divider N = BP+A. In addition, the 14-bit reference counter R Counter, allows selectable REFIN frequencies at the PFD input. A complete PLL Phase-Locked Loop can be implemented if the synthesizer is used with an external loop filter and VCO Voltage Controlled Oscillator.

Control of all the on-chip registers is via a simple 3-wire interface. The devices operate with a power supply ranging from 2.7 V to 5.5 V and can be powered down when not in use.

### Features and Benefits

.

ADF4110: 550 MHz

.

ADF4111: 1.2 GHz

.

ADF4112: 3.0 GHz

.

ADF4113: 4.0 GHz

.

+2.7 V to +5.5 V Power Supply

.

Separate Vp Allows Extended Tuning Voltage in 3V Systems

.

Programmable Charge Pump Currents

.

Programmable Dual Modulus Prescaler 8/9, 16/17, 32/33, 64/65

.

Programmable Anti-Backlash Pulse Width

.

3-Wire Serial Interface

.

Digital Lock Detect

.

Power Down Mode