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PDF ( 数据手册 , 数据表 ) ADF4118

零件编号 ADF4118
描述 RF PLL Frequency Synthesizers
制造商 Analog Devices
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ADF4118 数据手册, 描述, 功能
RF PLL Frequency Synthesizers
ADF4116/ADF4117/ADF4118
FEATURES
GENERAL DESCRIPTION
ADF4116: 550 MHz
ADF4117: 1.2 GHz
ADF4118: 3.0 GHz
2.7 V to 5.5 V power supply
Separate VP allows extended tuning voltage in 3 V systems
Y Grade: −40°C to +125°C
Dual-modulus prescaler
ADF4116: 8/9
ADF4117/ADF4118: 32/33
3-wire serial interface
Digital lock detect
Power-down mode
Fastlock mode
The ADF411x family of frequency synthesizers can be used to
implement local oscillators (LO) in the upconversion and
downconversion sections of wireless receivers and transmitters.
They consist of a low noise digital phase frequency detector
(PFD), a precision charge pump, a programmable reference
divider, programmable A and B counters, and a dual-modulus
prescaler (P/P + 1). The A (5-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 phase-locked loop (PLL) can be
implemented if the synthesizer is used with an external loop
filter and voltage controlled oscillator (VCO).
APPLICATIONS
All of the on-chip registers are controlled via a simple 3-wire
Base stations for wireless radio
(GSM, PCS, DCS, CDMA, WCDMA)
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.
Wireless handsets
(GSM, PCS, DCS, CDMA, WCDMA)
Wireless LANs
Communications test equipment
CATV equipment
FUNCTIONAL BLOCK DIAGRAM
AVDD
DVDD
VP CPGND
ADF4116/ADF4117/ADF4118
REFERENCE
REFIN
CLK
DATA
LE
RFINA
RFINB
14-BIT
R COUNTER
14
R COUNTER
LATCH
21-BIT
INPUT REGISTER 19
FUNCTION
LATCH
SDOUT
FROM
FUNCTION LATCH
A, B COUNTER
LATCH
13
N = BP + A
13-BIT
B COUNTER
PRESCALER
P/P + 1
LOAD
LOAD
5-BIT
A COUNTER
18
PHASE
FREQUENCY
DETECTOR
LOCK
DETECT
AVDD
SDOUT
5
CE
AGND
DGND
Figure 1.
CHARGE
PUMP
MUX
HIGH Z
M3 M2 M1
FLO
SWITCH
CP
MUXOUT
FLO
Rev. D
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2000–2007 Analog Devices, Inc. All rights reserved.







ADF4118 pdf, 数据表
ADF4116/ADF4117/ADF4118
TYPICAL PERFORMANCE CHARACTERISTICS
FREQ- PARAM-TYPE DATA-FORMAT KEYWORD IMPEDANCE-
UNIT
OHMS
GHz
S
MA R
50
FREQ
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
0.90
MagS11
0.89207
0.8886
0.89022
0.96323
0.90566
0.90307
0.89318
0.89806
0.89565
0.88538
0.89699
0.89927
0.87797
0.90765
0.88526
0.81267
0.90357
0.92954
AngS11
–2.0571
–4.4427
–6.3212
–2.1393
–12.13
–13.52
–15.746
–18.056
–19.693
–22.246
–24.336
–25.948
–28.457
–29.735
–31.879
–32.681
–31.522
–34.222
FREQ
0.95
1.00
1.05
1.10
1.15
1.20
1.25
1.30
1.35
1.40
1.45
1.50
1.55
1.60
1.65
1.70
1.75
1.80
MagS11
0.92087
0.93788
0.9512
0.93458
0.94782
0.96875
0.92216
0.93755
0.96178
0.94354
0.95189
0.97647
0.98619
0.95459
0.97945
0.98864
0.97399
0.97216
AngS11
–36.961
–39.343
–40.134
–43.747
–44.393
–46.937
–49.6
–51.884
–51.21
–53.55
–56.786
–58.781
–60.545
–61.43
–61.241
–64.051
–66.19
–63.775
Figure 4. S-Parameter Data for the ADF4118 RF Input (Up to 1.8 GHz)
0
–5
–10
–15
–20
–25
–30
–35
–40
–45
0
VDD = 3V
VP = 3V
TA = –40°C
TA = +85°C
TA = +25°C
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
RF INPUT FREQUENCY (GHz)
Figure 5. Input Sensitivity (ADF4118)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
REFERENCE
LEVEL = –4.2dBm
VDD = 3V, VP = 5V
ICP = 1mA
PFD FREQUENCY = 200kHz
LOOP BANDWIDTH = 20kHz
RES. BANDWIDTH = 10Hz
VIDEO BANDWIDTH = 10Hz
SWEEP = 1.9 SECONDS
AVERAGES = 22
–90.2dBc/Hz
–2kHz
–1kHz
900MHz
1kHz
Figure 6. ADF4118 Phase Noise
(900 MHz, 200 kHz, 20 kHz)
2kHz
10dB/DIVISION
–40
RL = –40dBc/Hz
RMS NOISE = 0.64°
–50
0.64° rms
–60
–70
–80
–90
–100
–110
–120
–130
–140
100Hz
FREQUENCY OFFSET FROM 900MHz CARRIER 1MHz
Figure 7. ADF4118 Integrated Phase Noise
(900 MHz, 200 kHz, 35 kHz, Typical Lock Time: 200 μs)
10dB/DIVISION
–40
–50
–60
RL = –40dBc/Hz
RMS NOISE = 0.575°
0.575° rms
–70
–80
–90
–100
–110
–120
–130
–140
100Hz
FREQUENCY OFFSET FROM 900MHz CARRIER 1MHz
Figure 8. ADF4118 Integrated Phase Noise
(900 MHz, 200 kHz, 20 kHz, Typical Lock Time: 400 μs)
0
–10
REFERENCE
LEVEL = –3.8dBm
VDD = 3V, VP = 5V
ICP = 1mA
–20 PFD FREQUENCY = 200kHz
–30 LOOP BANDWIDTH = 20kHz
RES. BANDWIDTH = 1kHz
–40 VIDEO BANDWIDTH = 1kHz
–50 SWEEP = 2.5 SECONDS
AVERAGES = 4
–60
–70
–80 –91.5dBc
–90
–100
–400kHz
–200kHz
900MHz
200kHz
Figure 9. ADF4118 Reference Spurs
(900 MHz, 200 kHz, 20 kHz)
400kHz
Rev. D | Page 8 of 28







ADF4118 equivalent, schematic
ADF4116/ADF4117/ADF4118
13-BIT B COUNTER
5-BIT A COUNTER
CONTROL
BITS
DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10 DB9
G1 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3
DB8
B2
DB7
B1
DB6
A5
DB5
A4
DB4
A3
DB3
A2
DB2 DB1 DB0
A1 C2 (0) C1 (1)
ADF4116
A5
X
X
X
X
ADF4117/ADF4118
A5
0
0
0
1
1
1
A4 A3
X0
X0
••
••
X1
X1
A4 A3
00
00
00
••
••
11
11
11
B13
B12
B11 • • • •• • • • • •
B3
B2
0
0
0 •••••••••• 0
0
0
0
0 •••••••••• 0
1
0
0
0 •••••••••• 0
1
0
0
0 •••••••••• 1
0
• •••••••••• •
• •••••••••• •
• •••••••••• •
1
1
1 •••••••••• 1
0
1
1
1 •••••••••• 1
0
1
1
1 •••••••••• 1
1
1
1
1 •••••••••• 1
1
B1 B COUNTER DIVIDE RATIO
1 NOT ALLOWED
0 NOT ALLOWED
13
04
••
••
••
0 8188
1 8189
0 8190
1 8191
A2 A1
00
01
••
••
10
11
A2 A1
00
01
10
••
••
01
10
11
A COUNTER
DIVIDE RATIO
0
1
6
7
A COUNTER
DIVIDE RATIO
0
1
2
29
30
31
LDP CURRENT SETTINGS
0 250µA
1 1mA
N = BP + A, P IS PRESCALER VALUE. B MUST BE GREATER
THAN OR EQUAL TO A. FOR CONTINUOUSLY ADJACENT
VALUES OF NX FREF, NMIN IS (P2 – P).
Figure 32. A Counter/B Counter Latch Map
Rev. D | Page 16 of 28










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