2.7 V to 5.5 V Power Supply
Separate Charge Pump Supply (V
) Allows Extended
P
Tuning Voltage in 3 V Systems
Programmable Dual Modulus Prescaler 8/9, 16/17,
32/33, 64/65
Programmable Charge Pump Currents
Programmable Antibacklash Pulsewidth
3-Wire Serial Interface
Analog and Digital Lock Detect
Hardware and Software Power-Down Mode
APPLICATIONS
Base Stations for Wireless Radio (GSM, PCS, DCS,
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 PLL (Phase-Locked Loop) can be implemented if the synthesizer is used with an external loop filter and
VCO (Voltage Controlled Oscillator).
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
RF
RF
IN
24-BIT
LE
A
IN
B
IN
INPUT REGISTER
FROM
FUNCTION
LATCH
PRESCALER
P/P +1
SD
OUT
N = BP + A
22
DGNDAGNDCE
14-BIT
R COUNTER
R COUNTER
LATCH
FUNCTION
LATCH
A, B COUNTER
LATCH
13-BIT
B COUNTER
LOAD
LOAD
6-BIT
A COUNTER
14
19
13
6
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.
–171–171dBc/Hz typ@ 25 kHz PFD Frequency
–164–164dBc/Hz typ@ 200 kHz PFD Frequency
9
–91–91dBc/Hz typ@ 1 kHz Offset and 200 kHz PFD Frequency
10
–87–87dBc/Hz typ@ 1 kHz Offset and 200 kHz PFD Frequency
10
–90–90dBc/Hz typ@ 1 kHz Offset and 200 kHz PFD Frequency
10
–91–91dBc/Hz typ@ 1 kHz Offset and 200 kHz PFD Frequency
11
–78–78dBc/Hz typ@ 300 Hz Offset and 30 kHz PFD Frequency
12
–86–86dBc/Hz typ@ 1 kHz Offset and 200 kHz PFD Frequency
13
–66–66dBc/Hz typ@ 200 Hz Offset and 10 kHz PFD Frequency
14
–84–84dBc/Hz typ@ 1 kHz Offset and 200 kHz PFD Frequency
14
–85–85dBc/Hz typ@ 1 kHz Offset and 200 kHz PFD Frequency
15
–86–86dBc/Hz typ@ 1 kHz Offset and 1 MHz PFD Frequency
9
–97/–106–97/–106dBc typ@ 200 kHz/400 kHz and 200 kHz PFD Frequency
10
–98/–110–98/–110dBc typ@ 200 kHz/400 kHz and 200 kHz PFD Frequency
10
–91/–100–91/–100dBc typ@ 200 kHz/400 kHz and 200 kHz PFD Frequency
10
–100/–110–100/–110dBc typ@ 200 kHz/400 kHz and 200 kHz PFD Frequency
11
–81/–84–81/–84dBc typ@ 30 kHz/60 kHz and 30 kHz PFD Frequency
12
–88/–90–88/–90dBc typ@ 200 kHz/400 kHz and 200 kHz PFD Frequency
13
–65/–73–65/–73dBc typ@ 10 kHz/20 kHz and 10 kHz PFD Frequency
14
–80/–84–80/–84dBc typ@ 200 kHz/400 kHz and 200 kHz PFD Frequency
14
–80/–84–80/–84dBc typ@ 200 kHz/400 kHz and 200 kHz PFD Frequency
ADF4113: 3100 MHz Output15–80/–82–82/–82dBc typ@ 1 MHz/2 MHz and 1 MHz PFD Frequency
NOTES
1
Operating temperature range is as follows: B Version: –40°C to +85°C.
2
The B Chip specifications are given as typical values.
3
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
which is less than this value.
4
AVDD = DVDD = 3 V; For AVDD = DVDD = 5 V, use CMOS-compatible levels.
5
Guaranteed by design.
6
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.
7
The synthesizer phase noise floor is estimated by measuring the in-band phase noise at the output of the VCO and subtracting 20 logN (where N is the N divider value).
8
The phase noise is measured with the EVAL-ADF411XEB1 Evaluation Board and the HP8562E Spectrum Analyzer. The spectrum analyzer provides the REFIN for
= 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
2
UnitTest Conditions/Comments
@ VCO Output
(AV
TIMING CHARACTERISTICS
Limit at T
= DVDD = 3 V ⴞ 10%, 5 V ⴞ 10%; AV
DD
1
R
= 4.7 k⍀; TA = T
SET
to T
MIN
MAX
MIN
to T
unless otherwise noted)
MAX
≤ VP ≤ 6.0 V; AGND = DGND = CPGND = 0 V;
DD
Parameter(B Version)UnitTest Conditions/Comments
t
1
t
2
t
3
t
4
t
5
t
6
NOTES
1
Guaranteed by design but not production tested.
Specifications subject to change without notice.
REV. 0
10ns minDATA to CLOCK Setup Time
10ns minDATA to CLOCK Hold Time
25ns minCLOCK High Duration
25ns minCLOCK Low Duration
10ns minCLOCK to LE Setup Time
20ns minLE Pulsewidth
–3–
ADF4110/ADF4111/ADF4112/ADF4113
CLOCK
DATA
LE
LE
t
1
DB20 (MSB)DB19DB2
t
2
Figure 1. Timing Diagram
ABSOLUTE MAXIMUM RATINGS
(TA = 25°C unless otherwise noted)
1, 2
AVDD to GND3 . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
to DVDD . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +0.3 V
AV
DD
V
to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
P
V
to AVDD . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +5.5 V
P
Digital I/O Voltage to GND . . . . . . . . –0.3 V to V
Analog I/O Voltage to GND . . . . . . . . . –0.3 V to V
REF
, RFINA, RFINB to GND . . . . . . –0.3 V to VDD + 0.3 V
Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent 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.
2
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.
3
GND = AGND = DGND = 0 V.
TRANSISTOR COUNT
6425 (CMOS) and 303 (Bipolar).
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 the
WARNING!
ADF4110/ADF4111/ADF4112/ADF4113 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.
ADF4110BRU–40°C to +85°CThin Shrink Small Outline Package (TSSOP)RU-16
ADF4110BCP–40°C to +85°CChip Scale Package (CSP)CP-20
ADF4111BRU–40°C to +85°CThin Shrink Small Outline Package (TSSOP)RU-16
ADF4111BCP–40°C to +85°CChip Scale Package (CSP)CP-20
ADF4112BRU–40°C to +85°CThin Shrink Small Outline Package (TSSOP)RU-16
ADF4112BCP–40°C to +85°CChip Scale Package (CSP)CP-20
ADF4113BRU–40°C to +85°CThin Shrink Small Outline Package (TSSOP)RU-16
ADF4113BCP–40°C to +85°CChip Scale Package (CSP)CP-20
ADF4113BCHIPS–40°C to +85°CDICEDICE
*Contact the factory for chip availability.
–4–
REV. 0
ADF4110/ADF4111/ADF4112/ADF4113
PIN FUNCTION DESCRIPTIONS
Pin No.MnemonicFunction
1R
SET
2CPCharge Pump Output. When enabled this provides ±I
3CPGNDCharge Pump Ground. This is the ground return path for the charge pump.
4AGNDAnalog Ground. This is the ground return path of the prescaler.
5RF
6RF
7AV
8REF
BComplementary Input to the RF Prescaler. This point should be decoupled to the ground plane with
IN
AInput to the RF Prescaler. This small signal input is normally ac-coupled from the VCO.
IN
DD
IN
9DGNDDigital Ground.
10CEChip Enable. A logic low on this pin powers down the device and puts the charge pump output into three-
11CLKSerial Clock Input. This serial clock is used to clock in the serial data to the registers. The data is latched into
12DATASerial Data Input. The serial data is loaded MSB first with the two LSBs being the control bits. This
13LELoad Enable, CMOS Input. When LE goes high, the data stored in the shift registers is loaded into one
14MUXOUTThis multiplexer output allows either the Lock Detect, the scaled RF or the scaled Reference Frequency
15DV
16V
DD
P
Connecting a resistor between this pin and CPGND sets the maximum charge pump output current. The
nominal voltage potential at the R
SET
I
CP
So, with R
= 4.7 kΩ, I
SET
CPmax
= 5 mA.
pin is 0.56 V. The relationship between ICP and R
max
.=23 5
R
SET
to the external loop filter, which in turn drives the
CP
SET
is
external VCO.
a small bypass capacitor, typically 100 pF. See Figure 25.
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
must be the same value as DVDD.
DD
Reference Input. This is a CMOS input with a nominal threshold of VDD/2 and an equivalent input resistance of 100 kΩ. See Figure 24. This input can be driven from a TTL or CMOS crystal oscillator or
it can be ac-coupled.
state mode. Taking the pin high will power up the device depending on the status of the power-down bit F2.
the 24-bit shift register on the CLK rising edge. This input is a high impedance CMOS input.
input is a high impedance CMOS input.
of the four latches, the latch being selected using the control bits.
to be accessed externally.
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
must be the same value as AVDD.
DD
Charge Pump Power Supply. This should be greater than or equal to VDD. In systems where VDD is 3 V,
it can be set to 6 V and used to drive a VCO with a tuning range of up to 6 V.
REV. 0
TSSOP
1
R
SET
2
CP
ADF4110
ADF4111
3
CPGND
AGND
RF
RF
AV
REF
B
IN
A
IN
DD
IN
ADF4112
4
ADF4113
5
TOP VIEW
(Not to Scale)
6
7
8
16
15
14
13
12
11
10
9
V
P
DV
DD
MUXOUT
LE
DATA
CLK
CE
DGND
PIN CONFIGURATIONS
–5–
CHIP SCALE PACKAGE
VPDVDDDV
8
9
10
IN
REF
DGND
DGND
DD
15
14
13
12
11
MUXOUT
LE
DATA
CLK
CE
CPGND
AGND
AGND
RF
IN
RF
IN
CP
2019181716
1
2
3
B
4
(Not to Scale)
5
A
6
AVDDAV
SET
R
ADF4110
ADF4111
ADF4112
ADF4113
TOP VIEW
7
DD
ADF4110/ADF4111/ADF4112/ADF4113
–Typical Performance Characteristics
FREQ-UNIT PARAM-TYPE DATA-FORMAT KEYWORD IMPEDANCE – OHMS
GHz S MA R 50
FREQ MAGS11ANGS11
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
FREQ MAGS11ANGS11
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
Figure 2. S-Parameter Data for the ADF4113 RF Input (Up
to 1.8 GHz)
0
VDD = 3V
= 3V
V
P
3
4
5
–10
–15
–20
–25
RF INPUT POWER – dBm
–30
–35
–5
TA = +85ⴗC
TA = +25ⴗC
TA = –40ⴗC
0
1
2
RF INPUT FREQUENCY – GHz
0
–10
–20
–30
–40
–50
–60
–70
OUTPUT POWER – dB
–80
–90
–100
REFERENCE
LEVEL = –4.2dBm
–2kHz–1kHz900MHz+1kHz+2kHz
VDD = 3V, VP = 5V
ICP = 5mA
PFD FREQUENCY = 200kHz
LOOP BANDWIDTH = 20kHz
RES. BANDWIDTH = 10Hz
VIDEO BANDWIDTH = 10Hz
SWEEP = 1.9 SECONDS
AVERAGES = 19
–92.5dBc/Hz
Figure 5. ADF4113 Phase Noise (900 MHz, 200 kHz,
20 kHz) with DLY and SYNC Enabled