SN761633
FM STEREO RADIO
WITH TRANSMITTER
www.ti.com
SLES210–OCTOBER 2007
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FEATURES
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Single-Chip FM Stereo Radio and Transmitter
FM Stereo MPX [Receive (Rx), Transmit (Tx)]
Frequency Range 76 MHz to 108 MHz (Rx, Tx)
Low Supply Current
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Pilot Out (Tx)
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General-Purpose External Input (Tx)
High Power Selectable RF Output (Tx)
–7/–3/1/4 dBm
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High Cut Control (HCC), Stereo Noise Control
(SNC) (Rx)
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–
Rx: 11.5 mA (VCC = 3 V, No RF Input)
Tx: 13 mA (VCC = 3 V, No Audio Input,
RTX = Open)
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Soft Mute (Rx)
VCC = 2.5 V to 4 V
40-Pin QFN Package
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32.768-kHz Crystal
I2C Interface
MPX Output for RDS (Rx)
Seek Tuning (Rx)
APPLICATIONS
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Portable Media Players
MP3 Players
Personal Navigation Devices
RFAGC (Rx)
RF Auto-Power Control (Tx)
Pilot Cancel (Rx)
Sixth-Order 15-kHz LPF (Tx)
Programmable De/Pre-Emphasis (50/75 μs)
RTA PACKAGE
(TOP VIEW)
39 38 37 36 35 34 33 32 31
40
1
2
3
4
5
6
7
8
9
30
VCC OSC
STBY
RF IN2
29
28
27
26
25
24
23
22
21
VCC RF
MPX FIL
RSSI
SDA
SCL
VCC D
GND D
PORT2
PORT1
XTAL2
XTAL1
IREF FIL
REG
MPX REF
PLT FIL
PLT DET1
PLT DET2
10
11
12 13 14 15 16 17 18 19 20
NC – No internal connection
DESCRIPTION
The SN761633 is an FM radio receiver and transmitter IC for portable audio players.
The circuit consists of a stereo FM radio receiver and FM transmitter, and is available in a small-outline package.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2007, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.