Si4136
I SM RF S
Y N T H E S I Z E R
W
I T H
I
N T E G R A T E D
VCO
S
F
OR
W
IRELESS
C
OMMUNICATIONS
Features
!
Dual-Band RF Synthesizers
"
"
!
!
!
!
!
!
RF1: 2300 MHz to 2500 MHz
RF2: 2025 MHz to 2300 MHz
62.5 MHz to 1000 MHz
!
!
IF Synthesizer
"
Integrated VCOs, Loop Filters,
Varactors, and Resonators
Minimal External Components
Required
Low Phase Noise
5 µA Standby Current
25.7 mA Typical Supply Current
3.0 V to 3.6 V Operation
Package: 24-pin TSSOP
Ordering Information:
See page 28.
Applications
!
!
Pin Assignments
!
ISM Band Communications
Wireless LAN and WAN
Dual-Band Communications
Si4136
SCLK
SDATA
GNDR
GNDR
NC
GNDR
NC
GNDR
Description
The Si4136 is a monolithic integrated circuit that performs both IF and RF
synthesis for wireless communications applications. The Si4136 includes
three VCOs, loop filters, reference and VCO dividers, and phase detectors.
Divider and power down settings are programmable through a three-wire
serial interface.
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
SENB
VDDI
IFOUT
GNDI
IFLB
IFLA
GNDD
VDDD
GNDD
XIN
PWDNB
AUXOUT
Functional Block Diagram
X IN
R eference
A m plifier
P ow er
D ow n
C ontrol
÷1/÷2
÷
R
RF1
GNDR
P hase
D etect
R F1
GNDR
RFOUT
R FO U T
P W D NB
÷
N
RF1
÷
R
RF2
÷
2
VDDR
S DA TA
S CLK
S EN B
S erial
Interface
22-bit
D ata
R egister
P hase
D etect
R F2
÷
N
RF2
÷
R
IF
÷
2
Patents pending
IFD IV
IFO U T
A UX O U T
Test
Mux
P hase
D etect
IF
÷
N
IF
IFLA
IFLB
Rev. 1.0 12/00
Copyright © 2000 by Silicon Laboratories
Si4136-DS10
Si4136
T
A B L E O F
C
O N T E N T S
Section
Page
4
16
16
16
17
17
18
18
19
19
20
21
27
28
29
30
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the VCO Center Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Self-Tuning Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PLL Loop Dynamics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RF and IF Outputs (RFOUT and IFOUT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference Frequency Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Down Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Auxiliary Output (AUXOUT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin Descriptions: Si4136 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rev. 1.0
3
S i4 13 6
Electrical Specifications
Table 1. Recommended Operating Conditions
Parameter
Ambient Temperature
Supply Voltage
Supply Voltages Difference
Symbol
T
A
V
DD
V
∆
(V
DDR
– V
DDD
),
(V
DDI
– V
DDD
)
Test Condition
Min
–40
3.0
–0.3
Typ
25
3.3
—
Max
85
3.6
0.3
Unit
°C
V
V
Note:
All minimum and maximum specifications are guaranteed and apply across the recommended operating conditions.
Typical values apply at nominal supply voltages and an operating temperature of 25°C unless otherwise stated.
Table 2. Absolute Maximum Ratings
1,2
Parameter
DC Supply Voltage
Input Current
3
Input Voltage
3
Storage Temperature Range
Symbol
V
DD
I
IN
V
IN
T
STG
Value
–0.5 to 4.0
±10
–0.3 to V
DD
+0.3
–55 to 150
Unit
V
mA
V
o
C
Notes:
1.
Permanent device damage may occur if the above Absolute Maximum Ratings are exceeded. Functional operation
should be restricted to the conditions as specified in the operational sections of this data sheet. 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. Handling and assembly of
this device should only be done at ESD-protected workstations.
3.
For signals SCLK, SDATA, SENB, PWDNB and XIN.
4
Rev. 1.0
Si4136
Table 3. DC Characteristics
(V
DD
= 3.0 to 3.6 V, T
A
= –40 to 85°C)
Parameter
Total Supply Current
1
RF1 Mode Supply Current
1
RF2 Mode Supply Current
1
IF Mode Supply Current
1
Standby Current
High Level Input Voltage
2
Low Level Input Voltage
2
High Level Input Current
2
Low Level Input Current
2
High Level Output Voltage
3
Low Level Output Voltage
3
V
IH
V
IL
I
IH
I
IL
V
OH
V
OL
V
IH
=
3.6 V,
V
DD
= 3.6 V
V
IL
=
0 V,
V
DD
=
3.6 V
I
OH
= –500 µA
I
OH
= 500 µA
PWDNB = 0
Symbol
Test Condition
RF1 and IF operating
Min
—
—
—
—
—
0.7 V
DD
—
–10
–10
V
DD
–0.4
—
Typ
25.7
15.7
15.4
10
1
—
—
—
—
—
—
Max
35
20
20
15
—
—
0.3 V
DD
10
10
—
0.4
Unit
mA
mA
mA
mA
µA
V
V
µA
µA
V
V
Notes:
1.
RF1 = 2.4 GHz, RF2 = 2.1 GHz, IFOUT = 800 MHz, LPWR = 0.
2.
For signals SCLK, SDATA, SENB, and PWDNB.
3.
For signal AUXOUT.
Rev. 1.0
5
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