2.7 V to 5.5 V power supply
Separate charge pump supply (V
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
Base stations for wireless radio (GSM, PCS, DCS, CDMA,
WCDMA)
Wireless handsets (GSM, PCS, DCS, CDMA, WCDMA)
Wireless LANS
Communications test equipment
CATV equipment
) allows extended tuning
P
FUNCTIONAL BLOCK DIAGRAM
AV
DV
DD
DD
ADF4110/ADF4111/ADF4112/ADF4113
GENERAL DESCRIPTION
The ADF4110 family of frequency synthesizers can be used to
implement local oscillators in the upconversion and downconversion sections of wireless receivers and transmitters. They
consist 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 phase-locked loop (PLL) can be implemented
if the synthesizer is used with an external loop filter and voltage
controlled oscillator (VCO).
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.
V
CPGND
P
R
SET
REF
CLK
DATA
LE
RF
IN
RF
IN
IN
24-BIT
INPUT REGISTER
FUNCTION
LATCH
A
B
PRESCALER
SD
FROM
P/P +1
22
OUT
N = BP + A
R COUNTER
R COUNTER
A, B COUNTER
B COUNTER
LOAD
LOAD
A COUNTER
DGNDAGNDCE
14-BIT
14
LATCH
FUNCTION
LATCH
LATCH
13
13-BIT
6-BIT
6
Figure 1. Functional Block Diagram
Rev. C
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. Trademarks and
registered trademarks are the property of their respective owners.
19
ADF4110/ADF4111
ADF4112/ADF4113
REFERENCE
PHASE
FREQUENCY
DETECTOR
LOCK
DETECT
AV
SD
OUT
CPI3 CPI2 CPI1 CPI6 CPI5 CPI4
DD
CHARGE
PUMP
CURRENT
SETTING 1
MUX
M3 M2 M1
CURRENT
SETTING 2
HIGH Z
CP
MUXOUT
03496-0-001
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
RF Input Sensitivity −10/0 −10/0 dBm min/max
RF Input Frequency
ADF4110 80/550 80/550 MHz min/max For lower frequencies, ensure SR > 50 V/µs.
ADF4111 0.08/1.4 0.08/1.4 GHz min/max For lower frequencies, ensure SR > 50 V/µs.
ADF4112 0.1/3.0 0.1/3.0 GHz min/max For lower frequencies, ensure SR > 75 V/µs.
ADF4113 0.2/3.7 0.2/3.7 GHz min/max For lower frequencies, ensure SR > 130 V/µs.
ADF4113 0.2/4.0 0.2/4.0 GHz min/max Input level = −5 dBm
Maximum Allowable Prescaler Output
Frequency
2
200 200 MHz max
REFIN CHARACTERISTICS
REFIN Input Frequency 5/104 5/104 MHz min/max For f < 5 MHz, ensure SR > 100 V/µs.
Reference Input Sensitivity 0.4/AVDD 0.4/AVDD V p-p min/max AVDD = 3.3 V, biased at AVDD/2. See Note 3.
3.0/AVDD 3.0/AVDD V p-p min/max AVDD = 5 V, biased at AVDD/2. See Note 3.
REFIN Input Capacitance 10 10 pF max
REFIN Input Current ±100 ±100 µA max
PHASE DETECTOR FREQUENCY4 55 55 MHz max
CHARGE PUMP
ICP Sink/Source Programmable (see Table 9).
High Value 5 5 mA typ With R
Low Value 625 625 µA typ
Absolute Accuracy 2.5 2.5 % typ With R
R
Range 2.7/10 2.7/10 kΩ typ See Table 9.
SET
ICP 3-State Leakage Current 1 1 nA typ
Sink and Source Current Matching 2 2 % typ 0.5 V ≤ VCP ≤ VP – 0.5 V.
ICP vs. VCP 1.5 1.5 % typ 0.5 V ≤ VCP ≤ VP – 0.5 V.
ICP vs. Temperature 2 2 % typ VCP = VP/2.
LOGIC INPUTS
V
, Input High Voltage 0.8 × DVDD 0.8 × DVDD V min
INH
V
, Input Low Voltage 0.2 × DVDD 0.2 × DVDD V max
INL
I
, Input Current ±1 ±1 µA max
INH/IINL
CIN, Input Capacitance 10 10 pF max
LOGIC OUTPUTS
VOH, Output High Voltage DVDD – 0.4 DVDD – 0.4 V min IOH = 500 µA.
VOL, Output Low Voltage 0.4 0.4 V max IOL = 500 µA.
(SR) > 30 V/µs.
ensure SR > 130 V/µs.
= 4.7 kΩ; dBm referred to 50 Ω; TA =
SET
= 4.7 kΩ
SET
= 4.7 kΩ
SET
Rev. C | Page 3 of 28
ADF4110/ADF4111/ADF4112/ADF4113
Parameter B Version B Chips1 Unit Test Conditions/Comments
POWER SUPPLIES
AVDD 2.7/5.5 2.7/5.5 V min/V max
DV
AVDD AVDD
DD
VP AVDD/6.0 AVDD/6.0 V min/V max AVDD ≤ VP ≤ 6.0 V. See Figure 25 and Figure 26.
5
I
(AIDD + DIDD)
DD
ADF4110 5.5 4.5 mA max 4.5 mA typical
ADF4111 5.5 4.5 mA max 4.5 mA typical
ADF4112 7.5 6.5 mA max 6.5 mA typical
ADF4113 11 8.5 mA max 8.5 mA typical
IP 0.5 0.5 mA max TA = 25°C
ADF4110: 540 MHz Output8 −91 −91 dBc/Hz typ @ 1 kHz offset and 200 kHz PFD frequency
ADF4111: 900 MHz Output9 −87 −87 dBc/Hz typ @ 1 kHz offset and 200 kHz PFD frequency
ADF4112: 900 MHz Output9 −90 −90 dBc/Hz typ @ 1 kHz offset and 200 kHz PFD frequency
ADF4113: 900 MHz Output9 −91 −91 dBc/Hz typ @ 1 kHz offset and 200 kHz PFD frequency
ADF4111: 836 MHz Output10 −78 −78 dBc/Hz typ @ 300 Hz offset and 30 kHz PFD frequency
ADF4112: 1750 MHz Output11 −86 −86 dBc/Hz typ @ 1 kHz offset and 200 kHz PFD frequency
ADF4112: 1750 MHz Output12 −66 −66 dBc/Hz typ @ 200 Hz offset and 10 kHz PFD frequency
ADF4112: 1960 MHz Output13 −84 −84 dBc/Hz typ @ 1 kHz offset and 200 kHz PFD frequency
ADF4113: 1960 MHz Output13 −85 −85 dBc/Hz typ @ 1 kHz offset and 200 kHz PFD frequency
ADF4113: 3100 MHz Output
Spurious Signals
ADF4110: 540 MHz Output9 −97/−106 −97/−106 dBc typ @ 200 kHz/400 kHz and 200 kHz PFD frequency
ADF4111: 900 MHz Output9 −98/−110 −98/−110 dBc typ @ 200 kHz/400 kHz and 200 kHz PFD frequency
ADF4112: 900 MHz Output9 −91/−100 −91/−100 dBc typ @ 200 kHz/400 kHz and 200 kHz PFD frequency
ADF4113: 900 MHz Output9 −100/−110 −100/−110 dBc typ @ 200 kHz/400 kHz and 200 kHz PFD frequency
ADF4111: 836 MHz Output10 −81/−84 −81/−84 dBc typ @ 30 kHz/60 kHz and 30 kHz PFD frequency
ADF4112: 1750 MHz Output11 −88/−90 −88/−90 dBc typ @ 200 kHz/400 kHz and 200 kHz PFD frequency
ADF4112: 1750 MHz Output12 −65/−73 −65/−73 dBc typ @ 10 kHz/20 kHz and 10 kHz PFD frequency
ADF4112: 1960 MHz Output13 −80/−84 −80/−84 dBc typ @ 200 kHz/400 kHz and 200 kHz PFD frequency
ADF4113: 1960 MHz Output13 −80/−84 −80/−84 dBc typ @ 200 kHz/400 kHz and 200 kHz PFD frequency
ADF4113: 3100 MHz Output14 −80/−82 −82/−82 dBc typ @ 1 MHz/2 MHz and 1 MHz PFD frequency
1
The B chip specifications are given as typical values.
2
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.
3
AC coupling ensures AVDD/2 bias. See Figure 33 for a typical circuit.
4
Guaranteed by design.
5
TA = 25°C; AVDD = DVDD = 3 V; P = 16; SYNC = 0; DLY = 0; RFIN for ADF4110 = 540 MHz; RFIN for ADF4111, ADF4112, ADF4113 = 900 MHz.
6
The synthesizer phase noise floor is estimated by measuring the in-band phase noise at the output of the VCO, PN
value) and 10logF
7
The phase noise is measured with the EVAL-ADF411xEB1 evaluation board and the HP8562E spectrum analyzer. The spectrum analyzer provides the REFIN for the
synthesizer (f
8
f
= 10 MHz; f
REFIN
9
f
= 10 MHz; f
REFIN
10
f
= 10 MHz; f
REFIN
11
f
= 10 MHz; f
REFIN
12
f
= 10 MHz; f
REFIN
13
f
= 10 MHz; f
REFIN
14
f
= 10 MHz; f
REFIN
: PN
PFD
SYNTH
= 10 MHz @ 0 dBm). SYNC = 0; DLY = 0 (Ta). ble 7
REFOUT
= 200 kHz; offset frequency = 1 kHz; fRF = 540 MHz; N = 2700; loop B/W = 20 kHz.
PFD
= 200 kHz; offset frequency = 1 kHz; fRF = 900 MHz; N = 4500; loop B/W = 20 kHz.
PFD
= 30 kHz; offset frequency = 300 Hz; fRF = 836 MHz; N = 27867; loop B/W = 3 kHz.
PFD
= 200 kHz; offset frequency = 1 kHz; fRF = 1750 MHz; N = 8750; loop B/W = 20 kHz
PFD
= 10 kHz; offset frequency = 200 Hz; fRF = 1750 MHz; N = 175000; loop B/W = 1 kHz.
PFD
= 200 kHz; offset frequency = 1 kHz; fRF = 1960 MHz; N = 9800; loop B/W = 20 kHz.
PFD
= 1 MHz; offset frequency = 1 kHz; fRF = 3100 MHz; N = 3100; loop B/W = 20 kHz.
PFD
= PN
14
−86 −86 dBc/Hz typ @ 1 kHz offset and 1 MHz PFD frequency
, and subtracting 20logN (where N is the N divider
– 10logF
TOT
– 20logN.
PFD
TOT
Rev. C | Page 4 of 28
ADF4110/ADF4111/ADF4112/ADF4113
K
TIMING CHARACTERISTICS
Guaranteed by design but not production tested. AVDD = DVDD = 3 V ± 10%, 5 V ± 10%; AVDD ≤ VP ≤ 6 V;
AGND = DGND = CPGND = 0 V; R
= 4.7 kΩ; TA = T
SET
Table 2.
Parameter Limit at T
MIN
to T
(B Version) Unit Test Conditions/Comments
MAX
t1 10 ns min DATA to CLOCK setup time
t2 10 ns min DATA to CLOCK hold time
t3 25 ns min CLOCK high duration
t4 25 ns min CLOCK low duration
t5 10 ns min CLOCK to LE setup time
t6 20 ns min LE pulse width
CLOC
MIN
to T
, unless otherwise noted.
MAX
t
3
t
4
DATA
LE
LE
t
1
DB20 (MSB)DB19DB2
t
2
DB1
(CONTROL BIT C2)
DB0 (LSB)
(CONTROL BIT C1)
t
5
t
6
03496-0-002
Figure 2. Timing Diagram
Rev. C | Page 5 of 28
ADF4110/ADF4111/ADF4112/ADF4113
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted
Table 3.
Parameter Rating
AVDD to GND1 −0.3 V to +7 V
AVDD to DVDD −0.3 V to +0.3 V
VP to GND −0.3 V to +7 V
VP to AVDD −0.3 V to +5.5 V
Digital I/O Voltage to GND −0.3 V to VDD + 0.3 V
Analog I/O Voltage to GND −0.3 V to VP + 0.3 V
REFIN, RFINA, RFINB to GND −0.3 V to VDD + 0.3 V
RFINA to RFINB ±320 mV
Operating Temperature Range
Industrial (B Version) −40°C to +85°C
Storage Temperature Range −65°C to +150°C
Maximum Junction Temperature 150°C
TSSOP θJA Thermal Impedance 150.4°C/W
LFCSP θJA Thermal Impedance
(Paddle Soldered)
LFCSP θJA Thermal Impedance
(Paddle Not Soldered)
Lead Temperature, Soldering
Vapor Phase (60 sec) 215°C
Infrared (15 sec) 220°C
122°C/W
216°C/W
1
GND = AGND = DGND = 0 V.
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those listed in the operational sections
of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
This device is a high performance RF integrated circuit with an
ESD rating of <2 kV, and it is ESD sensitive. Proper precautions
should be taken for handling and assembly.
TRANSISTOR COUNT
6425 (CMOS) and 303 (Bipolar).
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the
human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Connecting a resistor between this pin and CPGND sets the maximum charge pump output current.
The nominal voltage potential at the R
I
=
maxCP
R
So, with R
SET
Charge Pump Output. When enabled, this provides ±I
5.23
SET
= 4.7 kΩ, I
CPmax
= 5 mA.
pin is 0.56 V. The relationship between I
SET
to the external loop filter, which in turn
CP
drives the external VCO.
3 1 CPGND Charge Pump Ground. This is the ground return path for the charge pump.
4 2, 3 AGND Analog Ground. This is the ground return path of the prescaler.
5 4 RFINB
Complementary Input to the RF Prescaler. This point should be decoupled to the ground plane with
a small bypass capacitor, typically 100 pF. See Figure 29.
6 5 RFINA Input to the RF Prescaler. This small-signal input is ac-coupled from the VCO.
7 6, 7 AVDD
Analog Power Supply. This may range from 2.7 V to 5.5 V. Decoupling capacitors to the analog
ground plane should be placed as close as possible to this pin. AV
.
as DV
DD
8 8 REFIN
Reference Input. This is a CMOS input with a nominal threshold of V
resistance of 100 kΩ. See Figure 28. This input can be driven from a TTL or CMOS crystal oscillator,
or can be ac-coupled.
9 9, 10 DGND Digital Ground.
10 11 CE
Chip Enable. A logic low on this pin powers down the device and puts the charge pump output into
three-state mode. Taking the pin high powers up the device depending on the status of the power-
down Bit F2.
11 12 CLK
Serial Clock Input. This serial clock is used to clock in the serial data to the registers. The data is
latched into the 24-bit shift register on the CLK rising edge. This input is a high impedance CMOS
input.
12 13 DATA
Serial Data Input. The serial data is loaded MSB first with the two LSBs being the control bits. This
input is a high impedance CMOS input.
13 14 LE
Load Enable, CMOS Input. When LE goes high, the data stored in the shift registers is loaded into
one of the four latches; the latch is selected using the control bits.
14 15 MUXOUT
This multiplexer output allows either the lock detect, the scaled RF, or the scaled reference
frequency to be accessed externally.
15 16, 17 DVDD
Digital Power Supply. This may range from 2.7 V to 5.5 V. Decoupling capacitors to the digital
ground plane should be placed as close as possible to this pin. DV
.
as AV
DD
16 18 VP
Charge Pump Power Supply. This should be greater than or equal to V
can be set to 6 V and used to drive a VCO with a tuning range of up to 6 V.
3 V, V
P
DV
DV
16
17
18
15
MUXOUT
14
LE
13
DATA
12
CLK
11
CE
9108
IN
REF
DGND
DGND
must be the same value
DD
/2, and an equivalent input
DD
must be the same value
DD
. In systems where VDD is
DD
CP
03496-0-004
and R
is
SET
Rev. C | Page 7 of 28
ADF4110/ADF4111/ADF4112/ADF4113
TYPICAL PERFORMANCE CHARACTERISTICS
FREQ PARAMDATAKEYWORDIMPEDANCE
–UNIT–TYPE –FORMAT–OHMS
GHzSMAR50
FREQ MAGS11 ANGS11
0.050.89207–2.0571
0.100.8886–4.4427
0.150.89022–6.3212
0.200.96323–2.1393
0.250.90566–12.13
0.300.90307–13.52
0.350.89318–15.746
0.400.89806–18.056
0.450.89565–19.693
0.500.88538–22.246
0.550.89699–24.336
0.600.89927–25.948
0.650.87797–28.457
0.700.90765–29.735
0.750.88526–31.879
0.800.81267–32.681
0.850.90357–31.522
0.900.92954–34.222
0.950.92087–36.961
1.000.93788–39.343
Figure 5. S-Parameter Data for the ADF4113 RF Input (up to 1.8 GHz)
0
–5
–10
–15
–20
–25
RF INPUT POWER (dBm)
–30
–35
012345
T
A
TA = –40°C
RF INPUT FREQUENCY (GHz)
FREQ MAGS11 ANGS11
1.050.9512–40.134
1.100.93458–43.747
1.150.94782–44.393
1.200.96875–46.937
1.250.92216–49.6
1.300.93755–51.884
1.350.96178–51.21
1.400.94354–53.55
1.450.95189–56.786
1.500.97647–58.781
1.550.98619–60.545
1.600.95459–61.43
1.650.97945–61.241
1.700.98864–64.051
1.750.97399–66.19
1.800.97216–63.775
TA = +25°C
= +85°C
VDD = 3V
V
= 3V
P
03496-0-005
03496-0-006
0
–10
–20
–30
–40
–50
–60
–70
OUTPUT POWER (dB)
–80
–90
–100
REFERENCE
LEVEL = –4.2dBm
–2.0kHz–1.0kHz900MHz1.0kHz2.0kHz
VDD = 3V, VP = 5V
I
= 5mA
CP
PFD FREQUENCY = 200kHz
LOOP BANDWIDTH = 20kHz
RES. BANDWIDTH = 10Hz
VIDEO BANDWIDTH = 10Hz
SWEEP = 1.9 s
AVERAGES = 19
FREQUENCY
–92.5dBc/Hz
Figure 8. ADF4113 Phase Noise
(900 MHz, 200kHz, 20 kHz) with DLY and SYNC Enabled