HMC838 Fractional-N PLL with Integrated VCO SMT, 795 - 945, 1590 - 1890, 3180 - 3780 MHz

The HMC838LP6CE is a fully functioned Fractional-N Phase-Locked-Loop (PLL) Frequency Synthesizer with an Integrated Voltage Controlled Oscillator (VCO). The synthesizer consists of an integrated low noise VCO with a triband output, an autocalibration subsystem for low voltage VCO tuning, a very low noise digital Phase Detector (PD), a precision controlled charge pump, a low noise reference path divider and a fractional divider.

The fractional synthesizer features an advanced delta-sigma modulator design that allows both ultra-fine step sizes and low spurious products. The phase detector (PD) features cycle slip prevention (CSP) technology to allow faster frequency hopping times. Ultra low in-close phase noise and low spurious also allows wider loop bandwidths for faster frequency hopping and low micro-phonics.

For theory of operation and register map refer to the "PLLs with Integrated VCO - RF VCOs" Operating Guide.

Applications

Cellular/4G Infrastructure
Repeaters and Femtocells
Communications Test Equipment
CATV Equipment
Phased Array Applications
DDS Replacement
Very High Data Rate Radios

Features and Benefits

RF Bandwidth: 795 - 945, 1590 - 1890, 3180 - 3780 MHz

Fractional or Integer Modes

19-Bit Prescaler

Ultra Low Phase Noise -111 dBc/Hz in Band Typ.

Figure of Merit (FOM) -230 dBc Integer

24-Bit Step Size, 3 Hz Resolution Typ.

200 MHz, 14-bit Reference Path Input

Cycle Slip Prevention

40 Lead 6x6mm SMT Package: 36mm²

RF & Microwave

Fractional-N PLLs

Data Sheets

Document	note
HMC838 Data Sheet	PDF 1.21 M

Application Notes

Document	note
PLL & PLLVCO Serial Programming Interface Mode Selection Application Note	PDF 1.07 M
Power-Up & Brown-Out Design Considerations for RF PLL+VCO Products Application Note	PDF 1.06 M
Wideband RF PLL+VCO and Clock Generation Products FAQs	PDF 397.01 K
Frequency Hopping with Hittite PLLVCOs Application Note	PDF 419.54 K

User Guides

Document	note
PLLs with Integrated VCO - RF Applications Product & Operating Guide	PDF 1.5 M

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
HMC838LP6CE Production	40 ld QFN (6x6mm w/4.7mm ep)	OTH 50	-40 to 85C	9.38	7.76	Y
HMC838LP6CETR Production	40 ld QFN (6x6mm w/4.7mm ep)	REEL 500	-40 to 85C	9.38	7.76	Y

Evaluation Boards

Part Number	Description	Price	RoHS
129020-HMC838LP6CE	Evaluation Kit - fo/2 & fo (Includes: Eval PCB, USB Interface, CD)	274.17	Y
129021-HMC838LP6CE	Evaluation Kit - 2fo (Includes: Eval PCB, USB Interface, CD)	274.17	Y
129511-HMC838LP6CE	Evaluation Board - fo & fo/2	234.17	Y
129512-HMC838LP6CE	Evaluation Board - 2fo	234.17	Y