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ADF4112BRU

Part # ADF4112BRU
Description PLL FREQ SYNTHESIZER SGL 16TSSOP - Rail/Tube
Category IC
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Analog Devices
Date Code: 0234
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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

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.
a
ADF4110/ADF4111/ADF4112/ADF4113
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
RF PLL Frequency Synthesizers
FEATURES
ADF4110: 550 MHz
ADF4111: 1.2 GHz
ADF4112: 3.0 GHz
ADF4113: 4.0 GHz
2.7 V to 5.5 V Power Supply
Separate Charge Pump Supply (V
P
) 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 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,
CDMA, WCDMA)
Wireless Handsets (GSM, PCS, DCS, CDMA, WCDMA)
Wireless LANS
Communications Test Equipment
CATV Equipment
GENERAL DESCRIPTION
The ADF4110 family of frequency synthesizers can be used
to implement local oscillators in the upconversion and down-
conversion 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 imple-
mented 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.
FUNCTIONAL BLOCK DIAGRAM
REFERENCE
N = BP + A
FUNCTION
LATCH
PRESCALER
P/P +1
13-BIT
B COUNTER
6-BIT
A COUNTER
14-BIT
R COUNTER
24-BIT
INPUT REGISTER
R COUNTER
LATCH
A, B COUNTER
LATCH
PHASE
FREQUENCY
DETECTOR
CHARGE
PUMP
M3 M2 M1
HIGH Z
MUX
MUXOUT
CP
AV
DD
SD
OUT
19
13
14
22
SD
OUT
FROM
FUNCTION
LATCH
DGNDAGNDCE
RF
IN
B
RF
IN
A
LE
DATA
CLK
REF
IN
CPGND
V
P
DV
DD
AV
DD
LOCK
DETECT
ADF4110/ADF4111
ADF4112/ADF4113
R
SET
CURRENT
SETTING 2
CPI3 CPI2 CPI1 CPI6 CPI5 CPI4
CURRENT
SETTING 1
6
LOAD
LOAD
REV. 0
–2–
ADF4110/ADF4111/ADF4112/ADF4113–SPECIFICATIONS
1
(AV
DD
= DV
DD
= 3 V 10%, 5 V 10%; AV
DD
V
P
6.0 V; AGND = DGND = CPGND = 0 V; R
SET
= 4.7 k; T
A
= T
MIN
to T
MAX
unless otherwise noted)
Parameter B Version B Chips
2
Unit Test Conditions/Comments
RF CHARACTERISTICS (3 V) See Figure 25 for Input Circuit.
RF Input Frequency Use a square wave for lower frequencies.
ADF4110 45/550 45/550 MHz min/max
ADF4110 25/550 25/550 MHz min/max Input Level = –10 dBm
ADF4111 0.045/1.2 0.045/1.2 GHz min/max
ADF4112 0.2/3.0 0.2/3.0 GHz min/max
ADF4112 0.1/3.0 0.1/3.0 GHz min/max Input Level = –10 dBm
ADF4113 0.2/3.7 0.2/3.7 GHz min/max Input Level = –10 dBm
RF Input Sensitivity –15/0 –15/0 dBm min/max
Maximum Allowable Prescaler
Output Frequency
3
165 165 MHz max
RF CHARACTERISTICS (5 V)
RF Input Frequency Use a square wave for lower frequencies.
ADF4110 25/550 25/550 MHz min/max
ADF4111 0.025/1.4 0.025/1.4 GHz min/max
ADF4112 0.1/3.0 0.1/3.0 GHz min/max
ADF4113 0.2/3.7 0.2/3.7 GHz min/max
ADF4113 0.2/4.0 0.2/4.0 GHz min/max Input Level = –5 dBm
RF Input Sensitivity –10/0 –10/0 dBm min/max
Maximum Allowable Prescaler
Output Frequency
3
200 200 MHz max
REFIN CHARACTERISTICS
REFIN Input Frequency 0/100 0/100 MHz min/max
Reference Input Sensitivity
4
–5/0 –5/0 dBm min/max AC-Coupled. When DC-Coupled:
0 to V
DD
max (CMOS-Compatible)
REFIN Input Capacitance 10 10 pF max
REFIN Input Current ± 100 ± 100 µA max
PHASE DETECTOR
Phase Detector Frequency
5
55 55 MHz max
CHARGE PUMP
I
CP
Sink/Source Programmable: See Table V
High Value 5 5 mA typ With R
SET
= 4.7 k
Low Value 625 625 µA typ
Absolute Accuracy 2.5 2.5 % typ With R
SET
= 4.7 k
R
SET
Range 2.7/10 2.7/10 k typ See Table V
I
CP
3-State Leakage Current 1 1 nA typ
Sink and Source Current Matching 2 2 % typ 0.5 V V
CP
V
P
– 0.5
I
CP
vs. V
CP
1.5 1.5 % typ 0.5 V V
CP
V
P
– 0.5
I
CP
vs. Temperature 2 2 % typ V
CP
= V
P
/2
LOGIC INPUTS
V
INH
, Input High Voltage 0.8 × DV
DD
0.8 × DV
DD
V min
V
INL
, Input Low Voltage 0.2 × DV
DD
0.2 × DV
DD
V max
I
INH
/I
INL
, Input Current ± 1 ± 1 µA max
C
IN
, Input Capacitance 10 10 pF max
LOGIC OUTPUTS
V
OH
, Output High Voltage DV
DD
– 0.4 DV
DD
– 0.4 V min I
OH
= 500 µA
V
OL
, Output Low Voltage 0.4 0.4 V max I
OL
= 500 µA
POWER SUPPLIES
AV
DD
2.7/5.5 2.7/5.5 V min/V max
DV
DD
AV
DD
AV
DD
V
P
AV
DD
/6.0 AV
DD
/6.0 V min/V max AV
DD
V
P
6.0 V
I
DD
6
(AI
DD
+ DI
DD
) See Figures 22 and 23
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
I
P
0.5 0.5 mA max T
A
= 25°C
Low Power Sleep Mode 1 1 µA typ
REV. 0
–3–
ADF4110/ADF4111/ADF4112/ADF4113
Parameter B Version B Chips
2
Unit Test Conditions/Comments
NOISE CHARACTERISTICS
ADF4113 Phase Noise Floor
7
–171 –171 dBc/Hz typ @ 25 kHz PFD Frequency
–164 –164 dBc/Hz typ @ 200 kHz PFD Frequency
Phase Noise Performance
8
@ VCO Output
ADF4110: 540 MHz Output
9
–91 –91 dBc/Hz typ @ 1 kHz Offset and 200 kHz PFD Frequency
ADF4111: 900 MHz Output
10
–87 –87 dBc/Hz typ @ 1 kHz Offset and 200 kHz PFD Frequency
ADF4112: 900 MHz Output
10
–90 –90 dBc/Hz typ @ 1 kHz Offset and 200 kHz PFD Frequency
ADF4113: 900 MHz Output
10
–91 –91 dBc/Hz typ @ 1 kHz Offset and 200 kHz PFD Frequency
ADF4111: 836 MHz Output
11
–78 –78 dBc/Hz typ @ 300 Hz Offset and 30 kHz PFD Frequency
ADF4112: 1750 MHz Output
12
–86 –86 dBc/Hz typ @ 1 kHz Offset and 200 kHz PFD Frequency
ADF4112: 1750 MHz Output
13
–66 –66 dBc/Hz typ @ 200 Hz Offset and 10 kHz PFD Frequency
ADF4112: 1960 MHz Output
14
–84 –84 dBc/Hz typ @ 1 kHz Offset and 200 kHz PFD Frequency
ADF4113: 1960 MHz Output
14
–85 –85 dBc/Hz typ @ 1 kHz Offset and 200 kHz PFD Frequency
ADF4113: 3100 MHz Output
15
–86 –86 dBc/Hz typ @ 1 kHz Offset and 1 MHz PFD Frequency
Spurious Signals
ADF4110: 540 MHz Output
9
–97/–106 –97/–106 dBc typ @ 200 kHz/400 kHz and 200 kHz PFD Frequency
ADF4111: 900 MHz Output
10
–98/–110 –98/–110 dBc typ @ 200 kHz/400 kHz and 200 kHz PFD Frequency
ADF4112: 900 MHz Output
10
–91/–100 –91/–100 dBc typ @ 200 kHz/400 kHz and 200 kHz PFD Frequency
ADF4113: 900 MHz Output
10
–100/–110 –100/–110 dBc typ @ 200 kHz/400 kHz and 200 kHz PFD Frequency
ADF4111: 836 MHz Output
11
–81/–84 –81/–84 dBc typ @ 30 kHz/60 kHz and 30 kHz PFD Frequency
ADF4112: 1750 MHz Output
12
–88/–90 –88/–90 dBc typ @ 200 kHz/400 kHz and 200 kHz PFD Frequency
ADF4112: 1750 MHz Output
13
–65/–73 –65/–73 dBc typ @ 10 kHz/20 kHz and 10 kHz PFD Frequency
ADF4112: 1960 MHz Output
14
–80/–84 –80/–84 dBc typ @ 200 kHz/400 kHz and 200 kHz PFD Frequency
ADF4113: 1960 MHz Output
14
–80/–84 –80/–84 dBc typ @ 200 kHz/400 kHz and 200 kHz PFD Frequency
ADF4113: 3100 MHz Output
15
–80/–82 –82/–82 dBc 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
AV
DD
= DV
DD
= 3 V; For AV
DD
= DV
DD
= 5 V, use CMOS-compatible levels.
5
Guaranteed by design.
6
T
A
= 25°C; AV
DD
= DV
DD
= 3 V; P = 16; SYNC = 0; DLY = 0; RF
IN
for ADF4110 = 540 MHz; RF
IN
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
the synthesizer (f
REFOUT
= 10 MHz @ 0 dBm). SYNC = 0; DLY = 0 (See Table III).
9
f
REFIN
= 10 MHz; f
PFD
= 200 kHz; Offset frequency = 1 kHz; f
RF
= 540 MHz; N = 2700; Loop B/W = 20 kHz.
10
f
REFIN
= 10 MHz; f
PFD
= 200 kHz; Offset frequency = 1 kHz; f
RF
= 900 MHz; N = 4500; Loop B/W = 20 kHz.
11
f
REFIN
= 10 MHz; f
PFD
= 30 kHz; Offset frequency = 300 Hz; f
RF
= 836 MHz; N = 27867; Loop B/W = 3 kHz.
12
f
REFIN
= 10 MHz; f
PFD
= 200 kHz; Offset frequency = 1 kHz; f
RF
= 1750 MHz; N = 8750; Loop B/W = 20 kHz.
13
f
REFIN
= 10 MHz; f
PFD
= 10 kHz; Offset frequency = 200 Hz; f
RF
= 1750 MHz; N = 175000; Loop B/W = 1 kHz.
14
f
REFIN
= 10 MHz; f
PFD
= 200 kHz; Offset frequency = 1 kHz; f
RF
= 1960 MHz; N = 9800; Loop B/W = 20 kHz.
15
f
REFIN
= 10 MHz; f
PFD
= 1 MHz; Offset frequency = 1 kHz; f
RF
= 3100 MHz; N = 3100; Loop B/W = 20 kHz.
Specifications subject to change without notice.
TIMING CHARACTERISTICS
1
Limit at T
MIN
to T
MAX
Parameter (B Version) Unit Test Conditions/Comments
t
1
10 ns min DATA to CLOCK Setup Time
t
2
10 ns min DATA to CLOCK Hold Time
t
3
25 ns min CLOCK High Duration
t
4
25 ns min CLOCK Low Duration
t
5
10 ns min CLOCK to LE Setup Time
t
6
20 ns min LE Pulsewidth
NOTES
1
Guaranteed by design but not production tested.
Specifications subject to change without notice.
(AV
DD
= DV
DD
= 3 V 10%, 5 V 10%; AV
DD
V
P
6.0 V; AGND = DGND = CPGND = 0 V;
R
SET
= 4.7 k; T
A
= T
MIN
to T
MAX
unless otherwise noted)
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