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Preliminary
RF2489
DUAL-BAND/TRI-MODE CDMA LOW NOISE AMPLIFIER/MIXER
8
Typical Applications
* CDMA/Cellular/PCS Handsets * JCDMA/GPS Handsets * CDMA Modem/Data Cards
* Commercial and Consumer Systems * Portable Battery-Powered Equipment
Product Description
The RF2489 is a high performance CDMA dual-band/trimode integrated LNA/mixer. The device is designed to meet all IS-98 sensitivity, intermodulation and single-tone requirements. The operating voltage is 2.7V and is compatible with 1.8V logic for control lines. The RF2489 integrates the dual-band LNA/downconverters with 30dB of gain control and TX LO buffers. Additionally, a divide-by-2 prescaler to allow the use of a single-band VCO is integrated. The design is flexible, in that the bias currents may be set using off-chip current reference resistors for both the LNA and mixer blocks. The device is packaged in a 5mmx5mm leadless plastic package.
1.00 0.85 0.80 0.65 0.60 0.24 typ
5.00 sq.
0.23 0.13
4 PLCS
3 0.30 0.18
3.25 2.95 sq.
12 MAX 0.05 0.01
0.55 0.30 0.50 NOTES: 1 Shaded Pin is Lead 1.
0.45 0.20
4 PLCS
8
FRONT-ENDS
2 Pin 1 identifier must exist on top surface of package by identification mark or feature on the package body. Exact shape and size is optional. 3 Dimension applies to plated terminal: to be measured between 0.02 mm and 0.25 mm from terminal end. 4 Package Warpage: 0.05 mm max. 5 Die Thickness Allowable: 0.305 mm max.
Optimum Technology Matching(R) Applied
Si BJT Si Bi-CMOS
IF SEL
Package Style: LCC, 32-Pin, 5x5
uSiGe HBT
CELL MIX IN BAND SEL IP SET VCC1 32 31 30 29 28
GaAs HBT
GaAs MESFET Si CMOS
ISET2 ISET1
Features
* 30dB of Stepped LNA/Mixer Gain Control * Adjustable Mixer & LNA Bias Current/IIP3
27
GND
26
25 24 CELL LNA OUT
FM+
1
FM-
2
23
CELL LNA EMITTER
* A Divide-by-2 Prescaler * Meets IMD Tests with Three Gain States/ Two Logic Control Lines * Integrated TX LO Buffer Amplifiers
CDMA+
3
22
CELL LNA IN
CDMA-
4
/2
21 GND
/2 SELECT
5
20 PCS LNA IN
LO IN
6
19 GND
PCS LO OUT
7
18
VCC2
CELL LO OUT
8 9 VCC3 10 ENABLE 11 TX BUFF ENABLE 12 GND 13 PCS MIX IN 14 MIX GAIN 15 LNA GAIN 16 GND
17 PCS LNA OUT
Ordering Information
RF2489 RF2489 RF2489 PCBA Dual-Band/Tri-Mode CDMA Low Noise Amplifier/Mixer Dual-Band/Tri-Mode JCDMA/GPS Low Noise Amplifier/Mixer Fully Assembled Evaluation Board Tel (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com
Functional Block Diagram
RF Micro Devices, Inc. 7628 Thorndike Road Greensboro, NC 27409, USA
Rev A10 011017
8-33
RF2489
Absolute Maximum Ratings Parameter
Supply Voltage Input LO and RF Levels Operating Ambient Temperature Storage Temperature
Preliminary
Rating
-0.5 to +5.0 +6 -40 to +85 -40 to +150
Unit
VDC dBm C C
Caution! ESD sensitive device.
RF Micro Devices believes the furnished information is correct and accurate at the time of this printing. However, RF Micro Devices reserves the right to make changes to its products without notice. RF Micro Devices does not assume responsibility for the use of the described product(s).
Parameter
Overall
RF Frequency Range
Specification Min. Typ. Max.
869 to 894 1930 to 1990 1575.42 0.1 to 400
Unit
MHz MHz MHz MHz
Condition
T = 25C, VCC =2.75V
GPS Freq=869MHz to 894MHz Freq=832MHz to 870MHz
IF Frequency Range
Cellular Band JCDMA Band LNA (On)
Gain Noise Figure 13.5 13.0 15.0 14.0 1.1 1.1 +10.0 +8.5 6.5 4.5 23 -5 5.0 +25.0 0 5 13.5 4 7 14 +4.5 +14.0 19.5 15.0 16.0 1.3 1.3 dB dB dB dB dBm dBm mA mA dB dB dB dBm mA dB dB dB dB dB dBm dBm mA mA dB dB
8
FRONT-ENDS
Input IP3 Current Isolation
+9.0 +6.0
LNA 50 match IP SET=1 IP SET=0 IP SET=1 IP SET=0 IP SET=1 IP SET=0 IPSET=1 IPSET=0
LNA (Off)
Gain Noise Figure Input IP3 Current Isolation -6 +23.0 5.5
Mixer - CDMA/JCDMA
Gain Noise Figure Input IP3 Current LO to RF Isolation 36 30 +3.0 +12.0 12.0 2 15 8 16
LO Input Level=-4dBm Mixer Preamp ON Mixer Preamp OFF Mixer Preamp ON Mixer Preamp OFF Mixer Preamp ON Mixer Preamp OFF Mixer Preamp ON/Mixer/LO Input Amps Mixer Preamp OFF/Mixer/LO Input Amps Mixer Preamp ON Mixer Preamp OFF
8-34
Rev A10 011017
Preliminary
Parameter
Cellular Band JCDMA Band, cont'd Mixer - FM
Gain Noise Figure Input IP3 Current LO to RF Isolation 36 30 30 40 40 35 +3.0 +130 12 2 13 4 7 14 +5.0 +15.0 19.5 15.0 14 8 16 dB dB dB dB dBm dBm mA mA dB dB dB dB dB dB
RF2489
Specification Min. Typ. Max. Unit Condition
Freq=869MHz to 894MHz Freq=832MHz to 870MHz LO Input Level=-4dBm Mixer Preamp ON Mixer Preamp OFF Mixer Preamp ON Mixer Preamp OFF Mixer Preamp ON Mixer Preamp OFF Mixer Preamp ON/Mixer/LO Input Amps Mixer Preamp OFF/Mixer/LO Input Amps Mixer Preamp ON Mixer Preamp OFF
Other
LO-IF Isolation RF-IF Isolation LNA Out to Mixer In Isolation LO-LNA In Isolation, Any State
50
PCS Band
LNA (On)
Gain Noise Figure Input IP3 Current Isolation +6.0 -1.0 14.5 14.5 16.0 15.0 1.4 1.3 +8.0 +1.0 6.5 4.5 20 -5.5 5 +26.0 0 5 13.0 4.0 8.0 15 +4.0 +13.0 19.5 15.0 dB dB dB dB dBm dBm mA mA dB dB dB dBm mA dB dB dB dB dB dBm dBm mA mA dB dB dB dB dB dB
1.6 1.6
LNA (Off)
Gain Noise Figure Input IP3 Current Isolation -6.5 +23.0 6
Mixer
Gain Noise Figure Input IP3 Current LO to RF Isolation 36 30 36 40 30 35 +2.0 +11.0 11.5 2.5 14.0 9.5
LO Input Level=-4dBm Mixer Preamp ON Mixer Preamp OFF Mixer Preamp ON Mixer Preamp OFF Mixer Preamp ON Mixer Preamp OFF Mixer Preamp ON/Mixer/LO Input Amps Mixer Preamp OFF/Mixer/LO Input Amps Mixer Preamp ON Mixer Preamp OFF
Other
LO-IF Isolation RF-IF Isolation LNA Out to Mixer In Isolation LO-LNA In Isolation, Any State
40
Rev A10 011017
8-35
FRONT-ENDS
Freq=1930MHz to 1990MHz Freq=1840MHz to 1870MHz LNA 50 match IP SET=1 IP SET=0 IP SET=1 IP SET=0 IP SET=1 IP SET=0 IP SET=1 IP SET=0
8
RF2489
Parameter GPS Frequency
LNA (On)
Gain Noise Figure Input IP3 Current Isolation 20 -6.0 -11.0 16.5 15.5 18.0 16.5 1.4 1.3 -5.0 -9.0 dB dB dB dB dBm dBm mA mA dB
Preliminary
Specification Min. Typ. Max. Unit Condition
Freq=1575.42MHz LNA 50 match IP SET=1 IP SET=0 IP SET=1 IP SET=0 IP SET=1 IP SET=0 IP SET=1 IP SET=0 Mixer RF amp ON LO Input Level=-4dBm 15 +1.0 36 36 40 30 35 16 7 +1.5 17 9 dB dB dBm mA dB dB dB dB dB 1 pF BAND SEL, IF SEL, IP SET, LNA GAIN, ENABLE, MIX GAIN, TX BUFF ENABLE, /2 SELECT
1.6 1.6
Mixer
Gain Noise Figure Input IP3 Current LO to RF Isolation
Other
LO-IF Isolation RF-IF Isolation LNA Out to Mixer In Isolation LO-LNA In Isolation, Any State
40
8
FRONT-ENDS
Control Lines
Input Capacitance
8-36
Rev A10 011017
Preliminary
Parameter
Local Oscillator Input
Cellular - CDMA/FM Input Power Input Frequency -10 -4 685-710 1053-1078 1370-1420 2106-2156 -4 722-760 942-980 1444-1520 1884-1960 -4 1746-1806 2114-2174 -4 1465.42 1685.42 0 dBm MHz MHz MHz MHz dBm MHz MHz MHz MHz dBm MHz MHz dBm MHz MHz
RF2489
Specification Min. Typ. Max. Unit Condition
IF=184MHz IF=184MHz IF=184MHz with /2 SELECT=1 IF=184MHz with /2 SELECT=1
Cellular - JCDMA Input Power Input Frequency
-10
0
IF=110MHz IF=110MHz IF=110MHz with /2 SELECT=1 IF=110MHz with /2 SELECT=1
PCS Input Power Input Frequency GPS Input Power Input Frequency
-10
0
IF=184MHz IF=184MHz
-10
0
IF=110MHz IF=110MHz
TX (Local Oscillator) Buffer
Cellular - CDMA/FM Output Power Output Frequency -10 -8 685-710 1053-1078 1370-1420 2106-2156 2 -10 -8 722-760 942-980 1444-1520 1884-1960 2 -10 -8 1746-1806 2114-2174 2 dBm MHz MHz MHz MHz mA dBm MHz MHz MHz MHz mA dBm MHz MHz mA Single-ended 50 load, /2 SELECT=1 IF=184MHz IF=184MHz IF=184MHz with /2 SELECT=1 IF=184MHz with /2 SELECT=1
8
FRONT-ENDS
Current Consumption Cellular - JCDMA Output Power Output Frequency
Single-ended 50 load, /2 SELECT=1 IF=110MHz IF=110MHz IF=110MHz with /2 SELECT=1 IF=110MHz with /2 SELECT=1
Current Consumption PCS Output Power Output Frequency Current Consumption
Single-ended 50 load IF=184MHz IF=184MHz
Rev A10 011017
8-37
RF2489
Evaluation Board Current Measurement
BAND SEL CDMA Cellular JCDMA LNA On, Mixer Preamp On, TX Buffer Off, /2 Off LNA On, Mixer Preamp Off, TX Buffer Off, /2 Off LNA Bypassed, Mixer Preamp On, TX Buffer Off, /2 Off LNA Bypassed, Mixer Preamp Off, TX Buffer Off, /2 Off FM LNA On, Mixer Preamp On, TX Buffer Off, /2 Off LNA On, Mixer Preamp Off, TX Buffer Off, /2 Off LNA Bypassed, Mixer Preamp On, TX Buffer Off, /2 Off LNA Bypassed, Mixer Preamp Off, TX Buffer Off, /2 Off CDMA PCS - High IIP3 LNA Mode LNA On, Mixer Preamp On, TX Buffer Off, /2 Off LNA Off, Mixer Preamp Off, TX Buffer Off, /2 Off LNA Bypassed, Mixer Preamp On, TX Buffer Off, /2 Off LNA Bypassed, Mixer Preamp Off, TX Buffer Off, /2 Off GPS LNA On, Mixer On IF SEL ENABLE LNA GAIN MIX GAIN IP SET
Preliminary
TX BUFF ENABLE
/2 SELECT
IDC (mA)
0 0 0 0
0 0 0 0
1 1 1 1
1 1 0 0
1 0 1 0
0 0 0 0
0 0 0 0
0 0 0 0
27.5 23.0 23.0 18.5
0 0 0 0
1 1 1 1
1 1 1 1
1 1 0 0
1 0 1 0
0 0 0 0
0 0 0 0
0 0 0 0
27.5 23.0 23.0 18.5
1 1 1 1
0 0 0 0
1 1 1 1
1 1 0 0
1 0 1 0
1 1 1 1
0 0 0 0
0 0 0 0
29.5 25.0 23.0 18.5
8
FRONT-ENDS
NOTES: All IDC current numbers include bias circuitry current of 3.5mA (dependent on mode). TX Buffer On: Add 2mA to total current. /2 Select On: Add 2mA to total current. "X" denotes setting does not impact current.
8-38
Rev A10 011017
Preliminary
RF2489
CELL CDMA LNA ON LNA OFF Mixer Preamp On 24.5 2.2 -6.6 5.5 15.0 +12.3
Cascaded Performance (Typical Values for VCC =2.75V) NOTE: All total current numbers include bias circuitry current of 1.5mA to 2.0mA (dependent on mode).
Parameter LNA ON LNA OFF Mixer Preamp Off 15.0 5.1 +1.9 -4.0 22.0 +19.5 30 40 40 40 18.5
Cascaded: Gain (dB) Noise Figure (dB) Input IP3 (dBm)
LO to IF Isolation (dB) 30 30 30 IF1 to RF Isolation (dB) 40 40 40 IF2 to RF Isolation (dB) 40 40 40 LO to LNA IN Isolation (dB) 40 40 40 Total Current (mA) 27.5 23.0 23.0 NOTE: Assumes 3dB image filter insertion loss. The TX Buffer Enable is off. Div/2 function is off. Numbers represent low current LNA bias setting IPSET=0. Parameter FM LNA ON LNA OFF Mixer Preamp On 24.0 2.2 -6.1 5.0 15.0 +12.7
LNA ON LNA OFF Mixer Preamp Off 15.0 5.1 +2.7 -4.0 22.0 +20.8 30 40 40 40 18.5
Cascaded: Gain (dB) Noise Figure (dB) Input IP3 (dBm)
8
FRONT-ENDS -4.0 23.0 +19.8 30 40 40 40 18.5
LO to IF Isolation (dB) 30 30 30 IF1 to RF Isolation (dB) 40 40 40 IF2 to RF Isolation (dB) 40 40 40 LO to LNA IN Isolation (dB) 40 40 40 Total Current (mA) 27.5 23.0 23.0 NOTE: Assumes 3dB image filter insertion loss. The TX Buffer Enable is off. Div/2 function is off. Numbers represent low current LNA bias setting IPSET=0. Parameter
PCS CDMA LNA ON LNA OFF LNA at Max IIP3, IPSET=1 LNA at Min IIP3, IPSET=0 Mixer Amp ON Mixer Amp OFF Mixer Amp ON Mixer Amp OFF Mixer Amp ON Mixer Amp OFF 26.0 2.2 -9.0 17.0 4.7 -0.6 25.0 2.3 -8.5 15.5 5.2 -2.0 5.0 16.0 +11.8 30 40 40 40 23.0
Cascaded: Gain (dB) Noise Figure (dB) Input IP3 (dBm)
LO to IF Isolation (dB) 30 30 30 30 IF1 to RF Isolation (dB) 40 40 40 40 IF2 to RF Isolation (dB) 40 40 40 40 LO to LNA IN Isolation (dB) 40 40 40 40 Total Current (mA) 29.5 25.0 27.5 23.0 NOTE: Assumes 3dB image filter insertion loss. The TX Buffer Enable is off. Div/2 function is off. Parameter GPS Cascaded: Gain (dB) 34.5 Noise Figure (dB) 1.6 Input IP3 (dBm) -19 Total Current (mA) 21 NOTE: Assumes 1.5dB image filter insertion loss. The TX Buffer Enable is off. /2 Select is off.
Rev A10 011017
8-39
RF2489
Control Logic (Single VCO)
Preliminary
Mode
Cellular FM Cellular CDMA PCS CDMA Power Down Power Down 2 TX Buffer Enabled /2 Enabled
BAND SEL
0 0 1 1 X X 0
IF SEL
1 0 0 1 X X X
ENABLE
1 1 1 1 0 1 1
TX BUFF ENABLE
X X X X X 1 X
/2 SELECT
1 1 X X X X 1
Control Logic (Dual VCO)
Mode
Cellular FM Cellular CDMA PCS CDMA Power Down Power Down 2 TX Buffer Enabled /2 Enabled
BAND SEL
0 0 1 1 X X 0
IF SEL
1 0 0 1 X X X
ENABLE
1 1 1 1 0 1 1
TX BUFF ENABLE
X X X X X 1 X
/2 SELECT
0 0 X X X X 1
8
FRONT-ENDS
Application Note 1 The PCS TX LO output pin (pin 7) and the CELL TX LO output pin (pin 8) can be combined. When BAND SEL is set low, the PCS band LO limiter and PCS TX LO buffer are off. Also, when BAND SEL is set high, the cellular band LO limiter and frequency divider are off as well as the cellular TX LO buffer. The LO leakage through the path of the disabled LO limiter/divider and TX LO buffer is insignificant. Typical LO isolation test data follows: LO Input Frequency=2128MHz, PIN =-4dBm, BAND SEL=0, /2 SELECT=1 POUTPIN8 =-28dBm at 2128MHz POUTPIN8 =-11dBm at 1064MHz POUTPIN7 =-34dBm at 2128MHz
8-40
Rev A10 011017
Preliminary
Pin 1 Function FM+ Description
FM IF output. Open collector. "Current combiner" IF interface to SAW filter recommended.
RF2489
Interface Schematic
FM+ FM-
2 3
FMCDMA+
FM IF output. Open collector. "Current combiner" IF interface to SAW filter recommended. CDMA IF output. Open collector.
See pin 1.
CDMA+
CDMA-
4 5
CDMA/2 SELECT
CDMA IF output. Open collector. Enable /2 circuitry in cellular mode. High enables /2 circuitry. The divider is disabled when BAND SEL (pin 30) is high, regardless of the state of pin 5. The divider can only be enabled when BAND SEL is low and pin 5 is high. Pin 5 can be tied to a high state allowing BAND SEL (pin 30) to control the LO divider function, if using a single LO input source. LO single-end input. Internal DC block.
See pin 3.
6
LO IN
LO IN
8
FRONT-ENDS
7 8 9 10
PCS LO OUT CELL LO OUT VCC3 ENABLE
PCS LO output. Internal DC block. If a single TX VCO is required, pins 7 and 8 can be tied together and used as one LO output. (See application note 1.) Cellular LO output. Internal DC block. (See application note 1.) VCC connection for internal LO amplifiers. Internal RF bypass capacitor. External bypass capacitor between 1nF and 47nF required. Logic input. Low level powers down IC. IC can be shut down by setting pins 30 and 32 high and TX Buffer Enable low as well. Logic input. High enables TX LO buffer amplifiers.
TX BUF
ENABLE
11
TX BUFFER ENABLE GND PCS MIX IN
12 13
Low-inductance ground required. PCS mixer RF single-end input.
PCS MIX IN
14
MIX GAIN
Logic input. Logic high turns on PCS or cellular mixer preamp and mixer provides maximum gain. Logic low will bypass the PCS and cellular mixer preamp.
MIX GAIN
15
LNA GAIN
Logic input. High activates CDMA or PCS LNAs. Low selects LNA bypass mode for both bands.
LNA GAIN
Rev A10 011017
8-41
RF2489
Pin 16 17 Function GND PCS LNA OUT Description
Low-inductance ground required. PCS LNA output. Small external inductance required for best impedance match to 50.
Preliminary
Interface Schematic
VCC PCS LNA OUT PCS LNA IN
18 19 20 21 22
VCC2 GND PCS LNA IN GND CELL LNA IN
PCS LNA VCC connection. A series inductance required for matching. Low-inductance ground required. PCS LNA input. Simple external matching required for best performance. Low-inductance ground required. Cellular LNA input. Simple external matching required for best performance.
CELL LNA IN
See pin 17.
VCC CELL LNA OUT
CELL LNA EMITTER
23 24
8
FRONT-ENDS
25 26 27 28
CELL LNA EMITTER CELL LNA OUT ISET1 ISET2 GND CELL MIX IN
Cellular LNA emitter. A small inductor connects this pin to ground. Cellular LNA gain can be adjusted by the inductance. Cellular LNA output. Simple external L-C matching required. Resistor to ground sets both LNA and mixer currents. Lower resistance results in lower currents for both the LNA and mixer. Resistor to ground sets LNA current. Higher resistance results in lower current. Low-inductance ground required. Cellular mixer RF single-end input. External L-C network required for best performance.
See pin 22. See pin 22.
CELL MIX IN
29 30
VCC1 BAND SEL
31
IP SET
VCC for internal references, logic, and mixer preamplifiers. Internal RF bypass capacitor. External bypass capacitor between 1nF and 47nF required. Logic input. High level selects PCS band; low level selects cellular band. The LO divider circuitry is disabled when BAND SEL is high, regardless of the state of pin 5 (/2 SELECT). When BAND SEL is low, pin 5 can be selected high or low. If using a single LO input, pin 5 can be tied to a high state allowing BAND SEL to control the LO divider function. Logic input. High selects external LNA current reference set by the resistor connected from ISET2 to ground.
BAND SEL
IP SET
32
IF SEL
Logic input. High selects FM IF outputs; low selects CDMA IF outputs.
IF SEL
8-42
Rev A10 011017
Preliminary
Application Schematic
VCC BAND SEL 33 nF DNI
5
RF2489
OUT
6 3
IP SET 33 nF 47 nH IF SEL L2 VCC C1 20 k 5.1 k DNI 8.7 nH FM IF OUT C2 DNI C1 C1 VCC L2 CDMA IF OUT DNI /2 SELECT C2 0 C1 5 L1 R 4
/2
F2
4 1
GND GND GND GND
2
VCC
0 L1 R 1
32
31
30
29
28
27
26
25 24
2
23 1.5 nH
47 nH 33 nF LNA L IN
3
22 33 nF 33 nF 20 7.5 nH 1 pF LNA H IN
21
6
19
LO IN 68 HB LO OUT 2 nH LB LO OUT 2 nH
7
18 7.5 nH 0 0.5 pF
IN
VCC
8 9 10 11 12 13 14 15 16
17 1 nH
15 nH
DNI VCC LNA GAIN
8
MIX GAIN
TX BUFF ENABLE
BUF ENABLE
5
GND GND GND GND
47 nH
F1 DNI
OUT IN
2
33 nF
6 3
Output Interface Network
L1, C1, and R form a current combiner which performs a differential to single-ended conversion at the IF frequency and sets the output impedance. In most cases, the resonance frequency is independent of R and can be set according to the following equation:
fIF = 2 1
L1 (C1 + C EQ) 2
where ROUT is the desired output impedance and RP is the parasitic equivalent parallel resistance of L1. C1 should be chosen as high as possible (not greater than 22pF), while maintaining an RP of L1 that allows for the desired ROUT. L2 and C2 serve dual purposes. L2 serves as an output bias choke, and C2 serves as a series DC block. In addition, L2 and C2 may be chosen to form an impedance matching network if the input impedance of the IF filter is not equal to ROUT. Otherwise, L2 is chosen to be large, and C2 is chosen to be large if a DC path to ground is present in the IF filter, or omitted if the filter is DC blocked.
Where CEQ is the equivalent stray capacitance and capacitance looking into pins 1 and 2. An average value to use for CEQ is 2.5pF to 3pF. R can then be used to set the output impedance according to the following equation:
R= 1 (4 R
-1
OUT
RP
) -1
Rev A10 011017
8-43
FRONT-ENDS
4 1
RF2489
Evaluation Board Schematic IF@184MHz
(Download Bill of Materials from www.rfmd.com.)
VCC C26 33 nF C27 33 nF C28 33 nF C29 33 nF 32 R3 DNI C2 7 pF R2 0 C3 6.8 pF VCC 50 strip R6 DNI C6 7 pF L4 270 nH R5 0 L3 120 nH R4 10 k L2 120 nH R1 10 k C4 6.8 pF 1 31 30 29 28 R10 20 k R9 5.1 k L10 10 nH 27 26 25 24
Preliminary
50 strip C25 33 nF C24 DNI C23 33 nF
6 3 5
J11 MIX L IN
BAND SEL
OUT
IP SET
L11 47 nH
F2
4 1
GND GND GND GND
2
IF SEL VCC 50 strip L1 270 nH C1 6.8 pF
VCC
C22 DNI C21 1.8 pF
IN
J1 FM IF OUT
50 strip
J10 LNA L OUT
2
23 L16 1.5 nH L9 47 nH C20 33 nF 50 strip 50 strip C18 1 pF J9 LNA L IN
3
22
J2 CDMA IF OUT
4
/2
21 C17 33 nF 20 L12 7.5 nH R12 0
C19 33 nF
C5 6.8 pF C30 33 nF
5
J8 LNA H IN
6
19
/2 SELECT J3 LO IN
50 strip R8 68 50 strip 50 strip L13 2 nH L14 2 nH
7
18 L7 7.5 nH R11 0 C31 0.5 pF
VCC
8
FRONT-ENDS
J4 HB LO OUT J5 LB LO OUT
8 9 C7 33 nF C8 33 nF C9 33 nF L5 47 nH C10 33 nF VCC GND GND J6 MIX H IN 50 strip C11 33 nF C12 DNI
5
17 10 11 12 13 14 15 16 C14 33 nF C13 33 nF L6 1 nH C15 DNI L15 15 nH C16 33 nF
50 strip
J7 LNA H OUT
VCC
LNA GAIN
2489310 Rev. 1
ENABLE
MIX GAIN
TX BUFF ENABLE
F1
GND GND GND GND
6 3
4 1
OUT
IN
2
P1 P1-1 P1-2 P1-3 P1-4 1 2 3 4 CON4 /2 SELECT IF SEL IP SET BAND SEL P2-1 P2-2 P2-3 P2-4
P2 1 2 3 4 CON4 ENABLE TX BUFF ENABLE MIX GAIN LNA GAIN
C32 1 F P3-1
+ P3 1 2 3 CON3
8-44
Rev A10 011017
Preliminary
Evaluation Board Schematic JCDMA/GPS IF@110MHz
VCC C26 33 nF C27 33 nF C28 33 nF C29 33 nF 32 R3 DNI C2 9 pF R2 0 C3 15 pF VCC 50 strip R6 DNI C6 9 pF L4 220 nH R5 0 L3 220 nH R4 10 k L2 220 nH R1 10 k C4 15 pF 1 31 30 29 28 R10 22 k R9 5.1 k L10 11 nH 27 26 25 24
RF2489
50 strip C25 33 nF C24 DNI C23 33 nF
6 3 5
J11 MIX L IN
BAND SEL
OUT
IP SET
L11 47 nH
F2
4 1
GND GND GND GND
2
IF SEL VCC 50 strip L1 220 nH C1 15 pF
VCC
C22 DNI C21 1.8 pF
IN
J1 FM IF OUT
50 strip
J10 LNA L OUT
2
23 L16 1.5 nH
L9 47 nH
C20 33 nF 50 strip J9 LNA L IN
3
22 C19 33 nF
J2 CDMA IF OUT
4
/2
21 C17 3 pF 20 L12 5.1 nH L7 10 nH 50 strip J8 LNA H IN
C5 15 pF C30 33 nF
5
6
19
/2 SELECT J3 LO IN
50 strip 7 50 strip 50 strip R8 68 L13 2 nH L14 6.2 nH C7 33 nF C8 33 nF C9 33 nF L5 47 nH C10 33 nF VCC GND GND J6 MIX H IN 50 strip C11 33 nF C12 DNI
5
18 L6 3.9 nH C16 33 nF 50 strip
VCC J7 LNA H OUT
J4 HB LO OUT J5 LB LO OUT
8 9 10 11 12 13 14 15 16 C14 33 nF C13 33 nF
17 C15 DNI
8
FRONT-ENDS
VCC
LNA GAIN
2489310 Rev. 3 JCDMA/GPS
ENABLE
MIX GAIN
TX BUFF ENABLE
F1
GND GND GND GND
6 3
4 1
OUT
IN
2
P1 P1-1 P1-2 P1-3 P1-4 1 2 3 4 CON4 /2 SELECT IF SEL IP SET BAND SEL P2-1 P2-2 P2-3 P2-4
P2 1 2 3 4 CON4 ENABLE TX BUFF ENABLE MIX GAIN LNA GAIN P3-1 C32 + 1 F
P3 1 2 3 CON3
Rev A10 011017
8-45
RF2489
Evaluation Board Layout Board Size 3.100" x 2.958"
Preliminary
8
FRONT-ENDS
8-46
Rev A10 011017
Preliminary
RF2489
8
FRONT-ENDS
Rev A10 011017
8-47
RF2489
Preliminary
8
FRONT-ENDS
8-48
Rev A10 011017

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Price & Availability of RF2489

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