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ADF4216 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADF4216
Beschreibung Dual RF PLL Frequency Synthesizers
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 20 Seiten
ADF4216 Datasheet, Funktion
a
Dual RF PLL Frequency Synthesizers
ADF4216/ADF4217/ADF4218
FEATURES
GENERAL DESCRIPTION
ADF4216: 550 MHz/1.2 GHz
The ADF4216/ADF4217/ADF4218 are dual frequency synthe-
ADF4217: 550 MHz/2.0 GHz
sizers that can be used to implement local oscillators (LOs) in
ADF4218: 550 MHz/2.5 GHz
the upconversion and downconversion sections of wireless
2.7 V to 5.5 V Power Supply
receivers and transmitters. They can provide the LO for both
Selectable Charge Pump Currents
the RF and IF sections. They consist of a low-noise digital PFD
Selectable Dual Modulus Prescaler
(Phase Frequency Detector), a precision charge pump, a pro-
IF: 8/9 or 16/17
RF: 32/33 or 64/65
3-Wire Serial Interface
Power-Down Mode
APPLICATIONS
Wireless Handsets (GSM, PCS, DCS, CDMA, WCDMA)
OBase Stations for Wireless Radio (GSM, PCS, DCS,
CDMA, WCDMA)
BWireless LANS
Communications Test Equipment
SOCATV Equipment
grammable reference divider, programmable A and B counters,
and a dual-modulus prescaler (P/P+1). The A (6-bit) and B
(11-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 synthesizers are
used with an external loop filter and VCOs (Voltage Con-
trolled Oscillators).
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.
LFUNCTIONAL BLOCK DIAGRAM
EVDD1 VDD2 VP1 VP2
TEN=BP+A
ADF4216/ADF4217/ADF4218
IFINA
IFINB
IF
PRESCALER
11-BIT IF
B-COUNTER
PHASE
COMPARATOR
CHARGE
PUMP
CPIF
6-BIT IF
A-COUNTER
IF
LOCK
DETECT
REFIN
CLOCK
DATA
LE
OSCILLATOR
22-BIT
DATA
REGISTER
SDOUT
RFINA
RFINB
N = BP + A
RF
PRESCALER
14-BIT IF
R-COUNTER
14-BIT IF
R-COUNTER
11-BIT RF
B-COUNTER
6-BIT RF
A-COUNTER
OUTPUT
MUX
MUXOUT
RF
LOCK
DETECT
PHASE
COMPARATOR
CHARGE
PUMP
CPRF
REV. 0
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
DGNDRF AGNDRF DGNDIF DGNDIF AGNDIF
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2000






ADF4216 Datasheet, Funktion
ADF4216/ADF4217/ADF4218Typical Performance Characteristics
FREQ-UNIT PARAM-TYPE DATA-FORMAT KEYWORD IMPEDANCE – OHMS
GHz
S
MA R
50
FREQ MAGS11
0.0 0.957111193
0.15 0.963546793
0.25 0.953621785
0.35 0.953757706
0.45 0.929831379
0.55 0.908459709
0.65 0.897303634
0.75 0.876862863
0.85 0.849338092
0.95 0.858403269
1.05 0.841888714
1.15 0.840354983
1.25 0.822165839
ANGS11
3.130429321
6.686426265
11.19913586
15.35637483
20.3793432
22.69144845
27.07001443
31.32240763
33.68058163
38.57674885
41.48606772
45.97597958
49.19163116
FREQ MAGS11
1.35 0.816886959
1.45 0.825983016
1.55 0.791737125
1.65 0.770543186
1.75 0.793897072
1.85 0.745765233
1.95 0.7517547
2.05 0.745594889
2.15 0.713387801
2.25 0.711578577
2.35 0.698487131
2.45 0.669871818
2.55 0.668353367
ANGS11
51.80711782
56.20373378
61.21554647
61.88187496
65.39516615
69.24884474
71.21608147
75.93169947
78.8391674
81.71934806
85.49067481
88.41958754
91.70921678
0
10
REFERENCE
LEVEL = 4.2dBm
VDD = 3V, VP = 5V
ICP = 4.375mA
20 PFD FREQUENCY = 200kHz
30 LOOP BANDWIDTH = 20kHz
RES. BANDWIDTH = 1kHz
40
VIDEO BANDWIDTH = 1kHz
50 SWEEP = 2.5 SECONDS
AVERAGES = 30
60
70
80 90dBc
90
TPC 1. S-Parameter Data for the AD4218 RF Input
(Up to 2.5 GHz)
O0
BVDD = 3.3V
5 VP = 3.3V
S10
O15
L20
ETE25
TA = +85؇C
TA = 40؇C
100
400kHz 200kHz
900MHz
+200kHz +400kHz
TPC 4. ADF4218 RF Reference Spurs (900 MHz, 200 kHz,
20 kHz)
10dB/DIVISION
40
50
60
70
80
90
100
110
RL = 40dBc/Hz
RMS NOISE = 0.55؇
0.55؇ rms
120
30
TA = +25؇C
130
35
0
0.5 1 1.5 2 2.5
RF INPUT FREQUENCY GHz
3
140
100Hz
FREQUENCY OFFSET FROM 900MHz CARRIER 1MHz
TPC 2. Input Sensitivity for the ADF4218 (RF)
TPC 5. ADF4218 RF Integrated Phase Noise (900 MHz,
200 kHz, 20 kHz)
0
10 REFERENCE VDD = 3V, VP = 5V
LEVEL = 4.2dBm
ICP = 4.375mA
20 PFD FREQUENCY = 200kHz
30 LOOP BANDWIDTH = 20kHz
RES. BANDWIDTH = 10Hz
40 VIDEO BANDWIDTH = 10Hz
50 SWEEP = 1.9 SECONDS
AVERAGES = 19
60
70 90dBc/Hz
80
90
100
2kHz
1kHz
900MHz
+1kHz
+2kHz
TPC 3. ADF4218 RF Phase Noise (900 MHz, 200 kHz, 20 kHz)
10dB/DIVISION
40
RL = 40dBc/Hz
RMS NOISE = 0.65؇
50
60
0.65؇ rms
70
80
90
100
110
120
130
140
100Hz
FREQUENCY OFFSET FROM 900MHz CARRIER
1MHz
TPC 6. ADF4218 RF Integrated Phase Noise (900 MHz,
200 kHz, 35 kHz)
–6– REV. 0

6 Page









ADF4216 pdf, datenblatt
ADF4216/ADF4217/ADF4218
Table II. ADF4216 Family Latch Summary
IF REFERENCE COUNTER LATCH
14-BIT REFERENCE COUNTER, R
CONTROL
BITS
DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10 DB9
P4 P3 P2 P5 P1
R14 R13 R12 R11 R10 R9
R8
DB8
R7
DB7 DB6
R6 R5
DB5
R4
DB4 DB3 DB2 DB1 DB0
R3 R2 R1 C2 (0) C1 (0)
IF AB COUNTER LATCH
O 11-BIT B COUNTER
6-BIT A COUNTER
CONTROL
BITS
BSDB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5
OLETEP7 P6 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1
A6 A5 A4
DB4 DB3 DB2 DB1 DB0
A3 A2 A1 C2 (0) C1 (1)
RF REFERENCE COUNTER LATCH
14-BIT REFERENCE COUNTER, R
CONTROL
BITS
DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5
P4 P3 P2 P5 P1
R14 R13 R12 R11 R10 R9
R8 R7 R6 R5 R4
DB4 DB3 DB2 DB1 DB0
R3 R2 R1 C2 (1) C1 (0)
RF AB COUNTER LATCH
11-BIT B COUNTER
6-BIT A COUNTER
CONTROL
BITS
DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5
P7 P6 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1
A6 A5 A4
DB4 DB3 DB2 DB1 DB0
A3 A2 A1 C2 (1) C1 (1)
–12–
REV. 0

12 Page





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