SI4734-C40-GM Silicon Laboratories Inc, SI4734-C40-GM Datasheet - Page 20

• Manufacturer Part Number: SI4734-C40-GM
• Description: IC RX AM/FM/SW/LW RADIO 20UQFN
• Manufacturer: Silicon Laboratories Inc

Specifications of SI4734-C40-GM

• Frequency: 153kHz ~ 279kHz, 520kHz ~ 1.71MHz, 2.3MHz ~ 26.1MHz, 64MHz ~ 108MHz
• Modulation Or Protocol: AM, FM, SW-LW
• Applications: General Purpose
• Current - Receiving: 19.9mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Features: RSSI Equipped
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-UQFN, 20-µQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sensitivity: -
• Memory Size: -
• Data Rate - Maximum: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Si4734/35-C40
5. Functional Description
5.1. Overview
The Si4734/35 is the industry's first fully integrated,
100% CMOS AM/FM/SW/LW radio receiver IC. Offering
unmatched integration and PCB space savings, the
Si4734/35 requires minimal external components and
less than 20 mm
inputs. The Si4734/35 AM/FM/SW/LW radio provides
the space savings and low power consumption
necessary for portable devices while delivering the high
performance and design simplicity desired for all
AM/FM/SW/LW solutions.
Leveraging Silicon Laboratories' proven and patented
Si4700/01 FM tuner's digital low intermediate frequency
(low-IF) receiver architecture, the Si4734/35 delivers
superior RF performance and interference rejection in
AM, FM, and short wave and long wave bands. The
high integration and complete system production test
simplifies design-in, increases system quality, and
improves manufacturability.
The Si4734/35 is a feature-rich solution including
advanced seek algorithms, soft mute, auto-calibrated
digital tuning, and FM stereo processing. In addition, the
Si4734/35 provides analog or digital audio output and a
programmable reference clock. The device supports
20
2.0–5.5 V (SSOP)
2.7–5.5 V (QFN)
AM / LW
ANT
2
of board area, excluding the antenna
FM / SW
ANT
RFGND
GND
VDD
AMI
FMI
Figure 9. Functional Block Diagram
LNA
LNA
AGC
AGC
LDO
Rev. 1.0
I
Si4700/01
interface.
The Si4734/35 utilizes digital processing to achieve high
fidelity, optimal performance, and design flexibility. The
chip provides excellent pilot rejection, selectivity, and
unmatched audio performance, and offers both the
manufacturer
programmability
experience.
The Si4735 incorporates a digital processor for the
European Radio Data System (RDS) and the North
American Radio Broadcast Data System (RBDS),
including
synchronization, error detection, and error correction
functions. Using RDS, the Si4735 enables broadcast
data such as station identification and song name to be
displayed to the user.
2
AFC
C-compatible 2-wire control interface, SPI, and a
ADC
ADC
(Si4735)
LOW-IF
all
RDS
DSP
backwards-compatible
INTERFACE
Si4734/35
CONTROL
required
and
and
DIGITAL
(Si4735)
AUDIO
DAC
DAC
flexibility
the
symbol
DOUT
GPO/DCLK
ROUT
LOUT
VIO
1.85-3.6 V
DFS
end-user
in
decoding,
3-wire
the
extensive
listening
control
block