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Número de pieza HMC984LP4E
Descripción DIGITAL PHASE-FREQUeNCY DETECTOR
Fabricantes Analog Devices　
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HMC984LP4E
v02.0112
DIGITAL PHASE-FREQUeNCY DETECTOR
Typical Applications
The HMC984LP4E is suitable for:
• Test Equipment
• Portable Instruments
• High Performance Fractional-N Frequency
Synthesizers with Ultra Low Spurious Emissions
• Military
Features
Ultra-Low Noise:
-231 dBc/Hz FOM Integer Mode
-227 dBc/Hz FOM Fractional Mode
Ultra Low Spurious Emissions:
- Less Than 60 dBc Fractional Spurious
Differential Phase Detector Input
14-bit Reference Frequency Divider
Lock Indicator Output
Phase Measurement Capability
GPIO (General Purpose Input/Output) Test Pin
Cycle Slip Prevention Support with HMC984LP4E
24 pin, 4 x 4 mm, LP4E Package
Functional Diagram
General Description
HMC984LP4E is a high-performance, ultra-low phase
noise, SiGe BiCMOS Phase-Frequency Detector
and Charge Pump targeted to be used together with
the HMC983LP5E (Fractional Frequency Divider) to
together form a high performance, low noise, ultra low
spurious emission fractional-N frequency synthesizer.
Although best performance and maximum features are
achieved when used together with the HMC983LP5E,
the HMC984LP4E can also be used as a stand-alone,
low phase noise phase frequency detector.
The HMC984LP4E can receive differential VCO input,
and a reference frequency as high as 150 MHz. It
features a 14-bit reference frequency R-Divider, and
automatic and/or configurable Lock Detect Indicator,
as well as integrated CSP (Cycle Slip Prevention)
capability, when used together with the HMC983LP5E,
that significantly improves frequency lock time.
Integrated Charge Pump phase swap option enables
seamless interfaced to VCOs and active loop filters
with inverted polarity.
Additional features include adjustable Charge Pump
gain and offset current that improve linearity and
performance, and a Soft Reset feature that resets all
register to default values without having to perform a
power-cycle.
The HMC984LP4E is housed in a compact 24 pin 4x4
mm LP4 package.
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HMC984LP4E pdf
v02.0112
HMC984LP4E
DIGITAL PHASE-FREQUeNCY DETECTOR
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 1. HMC984LP4E & HMC983LP5E
PLL Flicker FOM vs Temperature [1]
Figure 2. HMC984LP4E & HMC983LP5E
PLL Floor FOM vs Temperature [1]
-266
-266.5
-267
-267.5
Mode B
Hi K Integer Mode
-268
Hi K Mode B
-268.5
-269
Integer Mode
-269.5
-50
-25
0 25 50
TEMPERATURE (C)
75 100
Figure 3. HMC984LP4E & HMC983LP5E
PLL Flicker FOM vs Frequency [1]
-265.5
-266
Hi K Mode B
Hi K Mode A
-266.5
-267
-267.5
Mode A
Mode B
-268
Hi K Integer Mode
-268.5
-269
Integer Mode
-269.5
12345678
FREQUENCY(GHz)
-226
-227
Mode B
-228
-229
Hi K Mode B
-230
Integer Mode
-231
Hi K Integer Mode
-232
-233
-50
-25
0 25 50
TEMPERATURE (C)
75 100
Figure 4. HMC984LP4E & HMC983LP5E
PLL Floor FOM vs Frequency [1]
-226
-227
-228
-229
-230
-231
Mode A
Mode B
Hi K Mode B
Hi K Mode A
Integer Mode
-232
Hi K Integer Mode
-233
12345678
FREQUENCY(GHz)
Figure 5. HMC984LP4E & HMC983LP5E
PLL Flicker FOM vs Reference Power [1]
-264.5
Figure 6. HMC984LP4E & HMC983LP5E
PLL Floor FOM vs Reference Power [1]
-225
-265
-226
-265.5
Mode B
-227
-266
-228
Mode B
-266.5
Hi K Mode B
-229
-267
Hi K Integer Mode
-230
Hi K Mode B
-267.5
-268
Integer Mode
-231
-232
Integer Mode
Hi K Integer Mode
-268.5
-15
-10
-5
0
5 10 15
-233
-15
-10
-5
0
5 10 15
REFERENCE POWER (dBm)
REFERENCE POWER (dBm)
[1] Crystal frequency = 100 MHz, PFD frequency = 50 MHz, Active Loop Filter with 220 KHz Bandwidth. Measured at 4101 MHz in fractional mode
and 4100 MHz in integer mode.
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HMC984LP4E arduino
v02.0112
HMC984LP4E
DIGITAL PHASE-FREQUeNCY DETECTOR
Table 2. Pin Descriptions Continued...
Pin Number
Function
Description
19,
SENb,
Serial Port Enable Input Pin, Active Low,
20,
SDI,
Serial Port Data Input Pin,
21
SCLK
Serial Data Clock Input Pin
Interface Schematic
22
CHIP3
Chip Address Bit 3
23
UPSAT
Reference Saturation Output
VCO Saturation Output Flag
24 DNSAT
Also Multiplexed with Crystal Oscillator Clock
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