|
|
PDF ADF4107 Data sheet ( Hoja de datos )
| Número de pieza | ADF4107 | |
| Descripción | PLL Frequency Synthesizer | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ADF4107 (archivo pdf) en la parte inferior de esta página. Total 21 Páginas | ||
|
No Preview Available !
Data Sheet
PLL Frequency Synthesizer
ADF4107
FEATURES
7.0 GHz bandwidth
2.7 V to 3.3 V power supply
Separate charge pump supply (VP) allows extended tuning
voltage in 3 V systems
Programmable dual-modulus prescaler
8/9, 16/17, 32/33, 64/65
Programmable charge pump currents
Programmable antibacklash pulse width
3-wire serial interface
Analog and digital lock detect
Hardware and software power-down mode
APPLICATIONS
Broadband wireless access
Satellite systems
Instrumentation
Wireless LANs
Base stations for wireless radio
GENERAL DESCRIPTION
The ADF4107 frequency synthesizer can be used to implement
local oscillators in the upconversion and downconversion sections
of wireless receivers and transmitters. It consists of a low noise
digital PFD (phase frequency detector), a precision charge pump, a
programmable reference divider, programmable A and B counters,
and a dual-modulus prescaler (P/P + 1). The A (6-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 PLL
(phase-locked loop) can be implemented if the synthesizer is
used with an external loop filter and VCO (voltage controlled
oscillator). Its very high bandwidth means that frequency
doublers can be eliminated in many high frequency systems,
simplifying system architecture and reducing cost.
AVDD DVDD
FUNCTIONAL BLOCK DIAGRAM
VP CPGND
RSET
REFERENCE
REFIN
CLK
DATA
LE
RFINA
RFINB
14-BIT
R COUNTER
14
R COUNTER
LATCH
24-BIT INPUT
REGISTER 22
FUNCTION
LATCH
SDOUT
FROM
FUNCTION
LATCH
A, B COUNTER
LATCH
13
N = BP + A
13-BIT
B COUNTER
PRESCALER
P/P + 1
LOAD
LOAD
6-BIT
A COUNTER
CE AGND DGND
6
PHASE
FREQUENCY
DETECTOR
CHARGE
PUMP
CP
LOCK
DETECT
CURRENT
SETTING 1
CURRENT
SETTING 2
CPI3 CPI2 CPI1 CPI6 CPI5 CPI4
HIGH Z
19 AVDD
MUX
MUXOUT
SDOUT
M3 M2 M1
ADF4107
Figure 1.
Rev. D
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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 ©2003–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
ADF4107
Data Sheet
Parameter
Phase Noise Performance12
900 MHz Output13
6400 MHz Output14
6400 MHz Output15
Spurious Signals
900 MHz Output13
6400 MHz Output14
6400 MHz Output15
B Version1 B Chips2 (Typ) Unit
−93 −93
−76 −76
−83 −83
dBc/Hz typ
dBc/Hz typ
dBc/Hz typ
−90/−92
−65/−70
−70/−75
−90/−92
−65/−70
−70/−75
dBc typ
dBc typ
dBc typ
Test Conditions/Comments
@ VCO output
@ 1 kHz offset and 200 kHz PFD frequency
@ 1 kHz offset and 200 kHz PFD frequency
@ 1 kHz offset and 1 MHz PFD frequency
@ 200 kHz/400 kHz and 200 kHz PFD
frequency
@ 200 kHz/400 kHz and 200 kHz PFD
frequency
@ 1 MHz/2 MHz and 1 MHz PFD frequency
1 Operating temperature range (B version) is −40°C to +85°C.
2 The B chip specifications are given as typical values.
3 Use a square wave for lower frequencies, below the minimum stated.
4 This is the maximum operating frequency of the CMOS counters. The prescaler value should be chosen to ensure that the RF input is divided down to a frequency that
is less than this value.
5 AVDD = DVDD = 3 V.
6 AC-coupling ensures AVDD/2 bias.
7 Guaranteed by design. Sample tested to ensure compliance.
8 TA = 25°C; AVDD = DVDD = 3 V; P = 32; RFIN = 7.0 GHz.
9 TA = 25°C; AVDD = DVDD = 3.3 V; R = 16,383; A = 63; B = 891; P = 32; RFIN = 7.0 GHz.
10 The synthesizer phase noise floor is estimated by measuring the in-band phase noise at the output of the VCO and subtracting 20logN (where N is the N divider value)
and 10 log(FPFD). PNSYNTH = PNTOT – 20 logN −10 logFPFD.
11 The PLL phase noise is composed of 1/f (flicker) noise plus the normalized PLL noise floor. The formula for calculating the 1/f noise contribution at an RF frequency, fRF,
and at a frequency offset, f, is given by PN = PN1_f + 10 log(10 kHz/f) + 20 log(fRF/1 GHz). Both the normalized phase noise floor and flicker noise are modeled in
ADIsimPLL.
12 The phase noise is measured with the EV-ADF411xSD1Z evaluation board and the HP8562E spectrum analyzer. The spectrum analyzer provides the REFIN for the
synthesizer (fREFOUT = 10 MHz @ 0 dBm).
13 fREFIN = 10 MHz; fPFD = 200 kHz; offset frequency = 1 kHz; fRF = 900 MHz; N = 4500; loop BW = 20 kHz.
14 fREFIN = 10 MHz; fPFD = 200 kHz; offset frequency = 1 kHz; fRF = 6400 MHz; N = 32,000; loop BW = 20 kHz.
15 fREFIN = 10 MHz; fPFD = 1 MHz; offset frequency = 1 kHz; fRF = 6400 MHz; N = 6400; loop BW = 100 kHz.
TIMING CHARACTERISTICS
AVDD = DVDD = 3 V ± 10%, AVDD ≤ VP ≤ 5.5 V, AGND = DGND = CPGND = 0 V, RSET = 5.1 kΩ, dBm referred to 50 Ω, TA = TMAX to TMIN,
unless otherwise noted. 1
Table 2.
Parameter
t1
t2
t3
t4
t5
t6
Limit2 (B Version)
10
10
25
25
10
20
Unit
ns min
ns min
ns min
ns min
ns min
ns min
Test Conditions/Comments
DATA to CLOCK setup time
DATA to CLOCK hold time
CLOCK high duration
CLOCK low duration
CLOCK to LE setup time
LE pulse width
1 Guaranteed by design but not production tested.
2 Operating temperature range (B Version) is −40°C to +85°C.
t3 t4
CLOCK
DATA DB23 (MSB)
t1 t2
DB22
LE
LE
DB2
DB1 (CONTROL
BIT C2)
DB0 (LSB)
(CONTROL BIT C1)
t6
t5
Figure 2. Timing Diagram
Rev. D | Page 4 of 20
5 Page 
ADF4107
HI
R DIVIDER
D1 Q1 UP
U1
CLR1
PROGRAMMABLE
DELAY
ABP2 ABP1
U3
VP
CHARGE
PUMP
CP
CLR2 DOWN
HI D2 Q2
N DIVIDER
U2
CPGND
Figure 20. PFD Simplified Schematic and Timing (in Lock)
MUXOUT AND LOCK DETECT
The output multiplexer on the ADF4107 allows the user to
access various internal points on the chip. The state of
MUXOUT is controlled by M3, M2, and M1 in the function
latch. Figure 25 shows the full truth table. Figure 21 shows the
MUXOUT section in block diagram form.
Lock Detect
MUXOUT can be programmed for two types of lock detect:
digital lock detect and analog lock detect.
Digital lock detect is active high. When the lock detect
precision (LDP) bit in the R counter latch is set to 0, digital lock
detect is set high when the phase error on three consecutive
phase detector (PD) cycles is less than 15 ns. With LDP set to 1,
five consecutive cycles of less than 15 ns are required to set the
lock detect. It stays set high until a phase error of greater than
25 ns is detected on any subsequent PD cycle.
The N-channel open-drain analog lock detect should be
operated with an external pull-up resistor of 10 kΩ nominal.
When lock has been detected, this output becomes high with
narrow, low going pulses.
ANALOG LOCK DETECT
DIGITAL LOCK DETECT
R COUNTER OUTPUT
N COUNTER OUTPUT
SDOUT
MUX
Data Sheet
DVDD
CONTROL
MUXOUT
Figure 21. MUXOUT Circuit
DGND
INPUT SHIFT REGISTER
The ADF4107 digital section includes a 24-bit input shift
register, a 14-bit R counter, and a 19-bit N counter, comprising a
6-bit A counter and a 13-bit B counter. Data is clocked into the
24-bit shift register on each rising edge of CLK. The data is
clocked in MSB first. Data is transferred from the shift register
to one of four latches on the rising edge of LE. The destination
latch is determined by the state of the two control bits (C2, C1)
in the shift register. These are the two LSBs, DB1 and DB0, as
shown in the timing diagram of Figure 2. The truth table for
these bits is shown in Table 5. Figure 22 shows a summary of
how the latches are programmed.
Table 5. C2, C1 Truth Table
Control Bits
C2 C1 Data Latch
0 0 R Counter
0 1 N Counter (A and B)
1 0 Function Latch (Including Prescaler)
1 1 Initialization Latch
Rev. D | Page 10 of 20
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet ADF4107.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ADF41020 | 18 GHz Microwave PLL Synthesizer | Analog Devices |
| ADF4106 | PLL Frequency Synthesizer | Analog Devices |
| ADF4107 | PLL Frequency Synthesizer | Analog Devices |
| ADF4108 | PLL Frequency Synthesizer | Analog Devices |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |