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SPRF2738A
Low Power FM/FSK IF IC
APR. 30, 2003 Version 1.2
SUNPLUS TECHNOLOGY CO. reserves the right to change this documentation without prior notice. Information provided by SUNPLUS TECHNOLOGY CO. is believed to be accurate and reliable. However, SUNPLUS TECHNOLOGY CO. makes no warranty for any errors which may appear in this document. Contact SUNPLUS TECHNOLOGY CO. to obtain the latest version of device specifications before placing your order. No responsibility is assumed by SUNPLUS TECHNOLOGY CO. for any infringement of patent or other rights of third parties which may result from its use. In addition, SUNPLUS products are not authorized for use as critical components in life support devices/ systems or aviation devices/systems, where a malfunction or failure of the product may reasonably be expected to result in significant injury to the user, without the express written approval of Sunplus.
SPRF2738A
Table of Contents
PAGE
1. GENERAL DESCRIPTION ..........................................................................................................................................................................3 2. FEATURES ..................................................................................................................................................................................................3 3. APPLICATION FIELD ..................................................................................................................................................................................3 4. BLOCK DIAGRAM ......................................................................................................................................................................................3 5. SIGNAL DESCRIPTIONS ............................................................................................................................................................................4 5.1. DIE FORM PIN OUT ................................................................................................................................................................................4 5.2. PIN CONFIGURATION..............................................................................................................................................................................4 5.3. ORDERING INFORMATION........................................................................................................................................................................5 6. ELECTRICAL SPECIFICATIONS................................................................................................................................................................6 6.1. ABSOLUTE MAXIMUM RATINGS................................................................................................................................................................6 6.2. DC/AC CHARACTERISTICS .....................................................................................................................................................................6 6.3. TEST CIRCUIT ........................................................................................................................................................................................7 6.4. TYPICAL CHARACTERISTICS ....................................................................................................................................................................7 7. APPPLICATION CIRCUITS .........................................................................................................................................................................8 7.1. 27MHZ WIRELESS MOUSE OR KEYBOARD RECEIVER RF MODULE...........................................................................................................8 7.2. 49MHZ FM BABY MONITOR RECEIVER ...................................................................................................................................................8 8. PACKAGE/PAD LOCATIONS .....................................................................................................................................................................9 8.1. PAD ASSIGNMENT AND LOCATIONS .........................................................................................................................................................9 8.2. PACKAGE INFORMATION........................................................................................................................................................................10 8.2.1. SOP16 (150mil) .......................................................................................................................................................................10 9. DISCLAIMER ............................................................................................................................................................................................. 11 10. REVISION HISTORY .................................................................................................................................................................................12
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(c) Sunplus Technology Co., Ltd. Proprietary & Confidential
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APR. 30, 2003 Version: 1.2
SPRF2738A
LOW POWER FM/FSK IF IC
1. GENERAL DESCRIPTION
SPRF2738A is a highly integrated IF (Intermediate Frequency) IC which is popularly used in FM / FSK (Frequency Modulation / Frequency-Shift Keying) or OOK (On-Off Keying) communication systems. It also contains a low noise amplifier, mixer, oscillator, IF limiting amplifier with RSSI (Received Signal Strength Indicator, metal slicer. optioned), quadrature demodulator, amplifier, and digital data The SPRF2738A is designed for single channel receiver at It is also applicable for dual conversions 10MHz - 50MHz band.
2. FEATURES
Operation voltage: 2.4V - 5.5V Low current consumption: 2.5mA @ VDD = 3.0V. Operating frequency up to 50MHz Power down function Single chip FM/FSK or OOK receiver.
communication system.
4. BLOCK DIAGRAM
VDD
LNAI
LNA
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RSSI function (metal option) Full ESD protection -107dBm sensitivity (SNR = 12dB)
3. APPLICATION FIELD
Dual conversion IF Radio control toy Voice/data communication.
Wireless keyboard, mouse receiver
MXO
LMI
RSSI
LMO
QUAD
CF
DEMO
OPP
1.8K
1.8K
RSSI
1.9V
OPO
QDEM
OPN
60k
100k
OSC
60k
DOB
VSS
OSCO
OSCI
PD
CN
CP
DO
(c) Sunplus Technology Co., Ltd. Proprietary & Confidential
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APR. 30, 2003 Version: 1.2
SPRF2738A
5. SIGNAL DESCRIPTIONS
5.1. Die form PIN Out
Mnemonic OSCI OSCO MXO PD VDD LMI CN CF QUAD LMO DEMO OPP OPN OPO VSS CP DOB DO LNAI PIN No. 1 2 3 4 5 6 7 8 9 10 11 Type I O O I I I I O I O O I Oscillator input Oscillator output Mixer output, Ro = 1.8K Power down, internally pulled high. PD ="H": power down; PD = "L": chip enable. Positive power supply Limit amplifier input, Ri = 1.8K Inverting input of comparator Discriminator output filtering capacitor Discriminator input for quadrature demodulator Limiting amplifier output FM demodulation output Description
12
13
14 15
16
17
18 19
5.2. PIN Configuration
OSCI OSCO MXO VDD LMI CN CF QUAD
SPRF2738A -PS031
OSCI OSCO MXO VDD LMI CN CF QUAD 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9
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Non-inverting input of operational amplifier. Inverting input of operational amplifier Output of operational amplifier Internally biased at 1.9V I O I Ground I Non-inverting input of comparator Inverted data output O O I Comparator output, data output Input of low noise amplifier, RF input
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1 2 3 4 5 6
16
LNAI VSS DO CP
OSCI MXO
1 2 3 4 5 6
16
LNAI VSS DOB NC CP OPO OPN DEMO
15 14 13 12 11 10 9
OSCO VDD
15 14 13 12 11 10 9
DOB
LMI CN CF
OPO OPN
7 8
7 8
DEMO
QUAD
SPRF2738A -PS032
LNAI VSS DO RSSI CP OPO OPN DEMO
SPRF2738A -002C-PS031
(c) Sunplus Technology Co., Ltd. Proprietary & Confidential
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APR. 30, 2003 Version: 1.2
SPRF2738A
5.3. Ordering Information
Product Number SPRF2738A - C SPRF2738A - PS031 SPRF2738A - PS032 SPRF2738A - 002C - C SPRF2738A - 002C - PS031
Note: The differences between the above two parts are listed as below.
Package Type Chip form Package form - SOP16 Package form - SOP16 Chip form Package form - SOP16
Product Number SPRF2738A - C SPRF2738A - PS031 SPRF2738A - PS032 SPRF2738A - 002C - C
Sensitivity @3.0V (dBm)
Input IP3 (dBm)
DOB pad option
-110 -106
-51 -38
SPRF2738A - 002C - PS031
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Yes No
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No Yes
(c) Sunplus Technology Co., Ltd. Proprietary & Confidential
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APR. 30, 2003 Version: 1.2
SPRF2738A
6. ELECTRICAL SPECIFICATIONS
6.1. Absolute Maximum Ratings
Characteristics DC Supply Voltage Input Voltage Range Operating Temperature Storage Temperature
conditions, see DC/AC Electrical Characteristics.
Symbol V+ VIN TA TSTO
Ratings < 6.0V -0.5V to V+ + 0.5V 0 to +60 -50 to +150
For normal operational
Note: Stresses beyond those given in the Absolute Maximum Rating table may cause operational errors or damage to the device.
6.2. DC/AC Characteristics
(VDD = 3.0V, VSS = 0V, PD = 0V, fIN = 27.045MHz, X'TAL=26.690MHz, fDEV = 3.0KHz, fMOD = 1.0KHz, TA = 25) Characteristics DC Supply Voltage Symbol VDD Icc2 ISB Conditions
Operating Current (RX) Power Down Current
LNA Input Impedance System Noise Figure System Sensitivity LNA AC Gain
LNA -3dB Bandwidth
Mixer Conversion Gain
Mixer Output Impedance
Limiting Input Impedance Limiting AC Gain
Demodulator Output Level Demo Output DC Voltage
Auto Threshold Control Resistor RSSI Sensitivity DO Driving Current
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2.4 3.0 PD = 0 2.5 PD = 1 or floating 1.0 |Zi| NF 2.0 11 SRX DEMO out SNR = 12dB -107 17 ALNA BW CG 50 24 RMXO RLMI 1.8 1.8 84 ALMT VDEMO 450 1.6 60 VDCDEMO RRc IRSSI Metal option 1.0 IOL, IOH 0.2
Min.
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Limit Typ.
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Max. 5.5 -100 -
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Unit V mA A K dB dBm dB MHz dB K K dB mVp-p V K A/dB mA
(c) Sunplus Technology Co., Ltd. Proprietary & Confidential
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APR. 30, 2003 Version: 1.2
SPRF2738A
6.3. Test Circuit
COB (Chip on Board) Testing Circuit
J1 1 2 3 CON1 C2 J2 1 2 20 19 18 17 16 15 14 ANT U1 47uF R3 51 C3 103
DO
C1 VCC 2.2n
C14 104 R1 R2 10k
C4 2.2n
10k
J3 1 2 PD VCC
PD
SPRF2738_COB
C10 103 VCC
6.4. Typical Characteristics
5 4 Supply Current (mA) 3 2 1 0 1 2
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OSCO QUAD AVDD MIXO OSCI L1 C5 30 C6 27 1
PD
10uH
3
F1 3
C7
C8 1n
1
104
C11 104
R4
2
Murata CFWM455E
2
10
1
2
3
4
5
6
7
8
9
LMO
LMI
CN
PD
CF
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DEMO
l a O
L2
13
12
11
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AVSS
DOB
OPO
LNAI
OPN
OPP
DO
NC
CP
C9
N/U
X1
C12 39
100
R5 47k
C13 N/U
2
TOKO 8128
26.690MHz
Current Consumption
1
3
Demodulator DC Output, VCC=3.0V
Vdemo, demodulator output voltage (V)
2.5
2
1.5
1
0.5
0 430 440 450 460 freq, LMI input frequency (kHz) 470 480
3 4 Supply Voltage (V)
5
6
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APR. 30, 2003 Version: 1.2
SPRF2738A
7. APPPLICATION CIRCUITS
7.1. 27MHz Wireless Mouse or Keyboard Receiver RF Module
SPRF2738A is almost compatible with MC3361
27.145MHz RF Input Digital Data Output
R1 10k
C1
C3 103
15
16
2.2n
14
13
12
11
10
9
VSS
DOB
OPO
DO
OPN
Note: C8 capacitor value should be changed to 2.2nF when MC3361 is replaced.
7.2. 49MHz FM Baby Monitor Receiver
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SPRF2738A-PS031
AVDD
LMI
OSCO
1
2
3
4
5
6
7
8
QUAD
OSCI
MIXO
CN
CF
DEMO
LNAI
CP
U1
*Note
L1
C5 30
C6 27
10uH
2
F1
2
C7
C8
TOKO 8128
3
3
1
1
104
2.2n
L2
C10 103
C11 104
R4
26.690MHz
1
100
X1
C12 39
Murata CFWM455E
R5 47k
VCC
L1: Prevents Crystal from Base Tone Oscillating F1: 455k Band Pass Filter
2
C13
Audio Output
49.86MHz RF Input
C1 1u
R1
C4
R2
10k
0.1u
C3
27k
103
14
16
15
13
12
11
10
9
OPO
VSS
DO
DOB
OPN
SPRF2738A-PS031 AVDD LMI
OSCO
1
2
5
7
3
4
L1 3.3uH C10 103 VCC C11 104 R4 100
C5 30 2
C6 F1 27 2 3 3 2 1 1
6
C7 104
C8 1n R5 47k
8
QUAD
OSCI
MIXO
CN
CF
DEMO
LNAI
CP
U1
TOKO 8128 L2 C13
X1 49.405MHz 1
C12 39
Murata CFWM455E
L1: Prevents Crystal from Base Tone Oscillating F1: 455k Band Pass Filter
(c) Sunplus Technology Co., Ltd. Proprietary & Confidential
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APR. 30, 2003 Version: 1.2
SPRF2738A
8. PACKAGE/PAD LOCATIONS
8.1. PAD Assignment and Locations
Please contact Sunplus sales representatives for more information.
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APR. 30, 2003 Version: 1.2
SPRF2738A
8.2. Package Information 8.2.1. SOP16 (150mil)
D E X
y
H
16
9
Symbol A
A1 b
D E e
H
L1 y
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pin 1 index L1 detail X 1 8 e b
A1
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Dimension in inch Typ. -
Min.
Max. 0.069 0.010 0.394 0.157 0.244 0.050 0.004
0.053
0.004 -
-
0.016 -
0.386
0.150 -
-
0.050 -
0.228
0.016 -
-
-
(c) Sunplus Technology Co., Ltd. Proprietary & Confidential
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APR. 30, 2003 Version: 1.2
SPRF2738A
9. DISCLAIMER
The information appearing in this publication is believed to be accurate. Integrated circuits sold by Sunplus Technology are covered by the warranty and patent indemnification provisions stipulated in the terms of sale only. SUNPLUS makes no warranty, express, statutory implied or by description regarding the information in this publication or FURTHERMORE, SUNPLUS MAKES NO WARRANTY OF SUNPLUS reserves the right to halt production or alter the specifications and regarding the freedom of the described chip(s) from patent infringement. MERCHANTABILITY OR FITNESS FOR ANY PURPOSE. prices at any time without notice. publication are current before placing orders.
Accordingly, the reader is cautioned to verify that the data sheets and other information in this Products described herein are intended for use in normal commercial applications. Please note that application circuits
Applications involving unusual environmental or reliability requirements, e.g. military equipment or medical life support equipment, are specifically not recommended without additional processing by SUNPLUS for such applications. illustrated in this document are for reference purposes only.
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APR. 30, 2003 Version: 1.2
SPRF2738A
10. REVISION HISTORY
Date APR. 30, 2003 Revision # 1.2 Description 1. Change operating range from 2.4V - 4.5V to 2.4V - 5.5V 2. Add C14 to the COB application circuit. 3. Change ordering information. SEP. 10, 2002 1.1 1. Add description of "Die form pin out". 2. Spec modification and typing correction. 3. Add description of "COB (Chip on Board) Testing Circuit ". 4. Add bonding options for SPRF2738A-PS031, SPRF2738A-PS032. AUG. 14, 2002 1.0 Original Page 6 7 5 4
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(c) Sunplus Technology Co., Ltd. Proprietary & Confidential
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APR. 30, 2003 Version: 1.2

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