HMC824LP6CE
v02.1109
FRACTIONAL-N SYNTHESIZER WITH
INTEGRATED VCO, 780 - 870 MHz
Features
• RF Bandwidth: 780 to 870 MHz
• Fractional or Integer Modes
• 19-Bit Prescaler
• Ultra Low Phase Noise
-110 dBc/Hz in Band Typ.
• Figure of Merit (FOM)
-227 dBc Integer
• 24-bit Step Size, Resolution 3 Hz typ
• 200 MHz, 14-bit Reference Path Input
• Cycle Slip Prevention
• Read / Write Serial Port, Chip ID
• 40 Lead 6x6mm SMT Package: 36mm
2
Typical Applications
12
PLLS w/ INTEGRATED VCO - SMT
• Cellular/4G Infrastructure
• Repeaters and Femtocells
• Communications Test Equipment
• CATV Equipment
• Phased Array Applications
• DDS Replacement
• Very High Data Rate Radios
Functional Diagram
12 - 88
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
HMC824LP6CE
v02.1109
FRACTIONAL-N SYNTHESIZER WITH
INTEGRATED VCO, 780 - 870 MHz
General Description
The HMC824LP6CE 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 divide-
by-2 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 fas-
ter 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 w/ Integrated VCOs - RF VCOs” Operating Guide. To view
the Operating Guide, please visit www.hittite.com and choose HMC824LP6CE from the “Search by Part Number”
pull down menu.
Electrical Specifi cations,
T
A
= +25° C
VPPCP, VDDCP, VCC1, VCC2 = 5V ±4%; RVDD, AVDD, DVDD3V, VCCPD, VCCHF, VCCPS =
3.3V ±6% GNDCP = GNDLS = Ground Paddle = 0V
Parameter
Condition
Min.
Typ.
Max.
Units
12
1560
780
11
14
15
-2
-25
-23
-31
1.5
1740
870
16.5
MHz
MHz
dBm
MHz/V
MHz/V
dBc
dBc
dBc
RF Output Characteristics
VCO Frequency at PLL Input
RF Output Frequency at f
VCO
/2
RF Output Power at f
VCO
/2
VCO Tuning Sensitivity
VCO Supply Pushing
RF Output 2nd Harmonic
RF Output 3rd Harmonic
RF Output 4th Harmonic
Measured at 2 GHz, 2V
Measured at 2 GHz, 2V
RF Divider Characteristics
19-Bit N-Divider Range (Integer)
19-Bit N-Divider Range (Fractional)
Max = 2
19
- 1
Fractional nominal divide ratio
varies (-3 / +4) dynamically max
16
20
524,287
524,283
REF Input Characteristics
Max Rep Input Frequency
Max Ref Frequency with AutoCal
Min Ref Input Frequency
Ref Input Range
Ref Input Capacitance
14-Bit R-Divider Range
1
AC Coupled
1.5
200
43
100
2
3.3
5
16,383
MHz
MHz
kHz
Vpp
pF
Phase Detector (PD)
PD Frequency Fractional Mode
PD Frequency Integer Mode
Max PD Freq. Min VCO Freq/20
Max PD Freq. Min VCO Freq/16
0.1
0.1
42
110
MHz
MHz
Charge Pump
Max Output Current
Min Output Current
Charge Pump Gain Step Size (5-Bits)
Charge Pump Trim Step Size (4-Bits)
2.54
20
20
5
mA
μA
μA
μA
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
12 - 8
PLLS w/ INTEGRATED VCO - SMT
HMC824LP6CE
v02.1109
FRACTIONAL-N SYNTHESIZER WITH
INTEGRATED VCO, 780 - 870 MHz
Electrical Specifi cations
(Continued)
Parameter
Charge Pump Trim Step Size (3-Bits)
Charge Pump Offset Step Size (4-Bits)
PD/Charge Pump Noise
1 kHz
10 kHz
100 kHz
Less than 3 dB degradation
typ. at these limits
Compliance Voltage
-385 μA Offset
+385 μA Offset
0.4
0.8
VPPCP-0.8
VPPCP-0.4
V
V
50 MHz Ref, Input Referred,
Integer, add 6 dB for Fractional
-141
-149
-155
dBc/Hz
dBc/Hz
dBc/Hz
Condition
Min.
Typ.
7
55
Max.
Units
μA
μA
12
PLLS w/ INTEGRATED VCO - SMT
Logic Inputs
VIH Input High Voltage
VIL Input Low Voltage
DVDD3V-0.4
0
DVDD3V
0.4
V
V
Logic Outputs
VOH Output High Voltage
VOL Output Low Voltage
DVDD3V-0.4
0
DVDD3V
0.4
V
V
Power Supply Voltages
Analog 3.3V Supplies
Digital Supply
Analog 5V Supplies
AVDD, VCCHF, VCCPS,
VCCPD, RVDD
DVDD3V
VPPCP, VDDCP, VCC1, VCC2
3.0
3.0
4.8
3.3
3.3
5
3.5
3.5
5.2
V
V
V
Power Supply Currents
+5V Analog Charge Pump
+5V VCO Core and PLL Buffer
+5V VCO Divider and RF Buffer
+3.3V Analog
+3.3V Digital
Power Down - Crystal Off
Power Down - Crystal On, 100 MHz
VPPCP, VDDCP
VCC2
VCC1
AVDD, VCCHF, VCCPS,
VCCPD, RVDD
DVDD3V
Reg 01h=0,
Crystal Not Clocked
Reg 01h=0,
Crystal Clocked 100 MHz
5.3
56
36
45
6.5
10
10
200
mA
mA
mA
mA
mA
μA
μA
Power on Reset
Typical Reset Voltage on DVDD
Min DVDD Voltage for No Reset
Power on Reset Delay
1.5
250
700
mV
V
μs
VCO Open Loop Phase Noise at fvco/2
1 GHz Divide-by-2 Output
1 GHz Divide-by-2 Output
1 GHz Divide-by-2 Output
1 GHz Divide-by-2 Output
1 GHz Divide-by-2 Output
10 kHz Offset
100 kHz Offset
1 MHz Offset
10 MHz Offset
100 MHz Offset
-93
-123
-148
-162
-166
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
Closed Loop Phase Noise PLL + VCO at fvco/2
Integer, 25 MHz PFD
1 kHz Offset
-112
dBc/Hz
12 - 90
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
HMC824LP6CE
v02.1109
FRACTIONAL-N SYNTHESIZER WITH
INTEGRATED VCO, 780 - 870 MHz
Electrical Specifi cations
(Continued)
Parameter
Integer, 25 MHz PFD
Integer, 25 MHz PFD
Integer, 25 MHz PFD
Fractional, 25 MHz PFD
Fractional, 25 MHz PFD
Fractional, 25 MHz PFD
Condition
10 kHz Offset
100 kHz Offset
1 MHz Offset
1 kHz Offset
10 kHz Offset
100 kHz Offset
Normalized 1 Hz
Measured w/ 50 MHz PD
at 30 kHz Offset
Measured w/ 50 MHz PD
at 30 kHz Offset
-227
-225
dBc/Hz
dBc/Hz
Min.
Typ.
-116
-118
-146
-107
-113
-115
Max.
Units
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
Figure of Merit
Integer Mode
Fractional Mode
12
780 MHz FF
820 MHz FF
870 MHz FF
-70
-80
-90
775 MHz FF
825 MHz FF
875 MHz FF
-70
-80
PHASE NOISE (dBc/Hz)
-100
-110
-120
-130
-140
-150
-160
-170
2
10
PHASE NOISE (dBc/Hz)
-90
-100
-110
-120
-130
-140
-150
-160
-170
2
10
3
4
5
6
10
3
10
4
10
5
10
6
10
7
10
8
10
10
10
10
10
7
10
8
OFFSET FREQUENCY (Hz)
OFFSET FREQUENCY (Hz)
VCO/2 Free Running Phase Noise
-40
-60
Typical VCO/2 Tuning Curves vs. Switch
Position
fmax
n0
n2
n4
n6
n8
n10
n12
n14
n16
n18
n20
n22
n24
n26
PHASE NOISE (dBc/Hz)
-80
-100
-120
-140
775 MHz
825 MHz
875 MHz
kvco (MHz/V)
fmin
-160
-180
3
10
n30
n30
n31
10
4
10
5
10
6
10
7
10
8
0
1
2
3
4
5
OFFSET FREQUENCY (Hz)
TUNING VOLTAGE (V)
[1] Fractional Mode, 50 MHz Crystal, R=1, ~80 kHz Loop BW, (Loop filter values: Contact factory for component values) 2mA Charge Pump, -385μA
Offset.
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
12 - 9
PLLS w/ INTEGRATED VCO - SMT
Closed Loop Integer Phase Noise
Typical Closed Loop Fractional Phase
Noise
[1]
HMC824LP6CE
v02.1109
FRACTIONAL-N SYNTHESIZER WITH
INTEGRATED VCO, 780 - 870 MHz
Free Running VCO Phase Noise
(V
TUNE
Set by AutoCal)
-120
100 kHz Offset
-130
+27C
-40C
+85C
Typical VCO Tuning Voltage After
Calibration
TUNE VOLTAGE AFTER CALIBRATION (V)
5
PHASE NOISE (dBc/Hz)
4
fmin
3
31
15
fmax
0
-140
1 MHz Offset
-150
2
-160
10 MHz Offset
1
-170
760
780
800
820
840
860
880
0
12
PLLS w/ INTEGRATED VCO - SMT
60
50
FREQUENCY (MHz)
VCO FREQUENCY (MHz)
Typical VCO Sensitivity vs. Cap @
Fo Voltage
Typical Output Power - Narrow Band
Match
20
kvco (MHz/V)
40
TUNING CAP 31, Fmin AT 2V
TUNING CAP 15, Fmid AT 2V
TUNING CAP 0, Fmax AT 2V
OUTPUT POWER (dBm)
5
15
30
Typical Operating Range
10
20
5
10
0
0
1
2
3
4
0
750
800
850
900
TUNING VOLTAGE (V)
OUTPUT FREQUENCY (MHz)
Figure of Merit
NORMALIZED PHASE NOISE (dBc/Hz)
-200
-210
Typ FOM vs Offset
-220
FOM Floor
FOM 1/f Noise
-230
-240
10
2
10
3
10
4
10
5
10
6
FREQUENCY OFFSET (Hz)
12 - 92
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
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