SI4770-77-A20 Datasheet, PDF (1/54 Pages) Silicon Laboratories – HIGH-PERFORMANCE CONSUMER ELECTRONICS

Si4770/77-A20
HIGH-PERFORMANCE CONSUMER ELECTRONICS
BROADCAST RADIO RECEIVER AND HD RADIO TUNER
Features
 Worldwide FM band support  AM/FM hi-cut control
(64–108 MHz)
 AM lo-cut filter
 Worldwide AM band support
(520–1710 kHz)
 L/R analog and digital (I²S) audio
outputs



AM/FM HD Radio support
(Si4777 only)
Comprehensive signal quality
metrics: RSSI, SNR, multipath
interference, frequency offset,
adjacent channel RSSI,
frequency deviation, and image
RSSI
Advanced patented RDS soft-
decision decoder




Digital Low-IF architecture
Frequency synthesizer with fully
integrated PLL-VCO
Fully integrated AM/FM front-end
including high performance LNA,
AGC with integrated resistor and
capacitor banks, and RF and IF
peak detectors
Integrated crystal oscillator
 Advanced, patented FM channel ^{ Digital (I2S) Zero-IF AM/FM I/Q}
equalizer for multipath
outputs (Si4777 only)
interference
 1.2 to 5 V power supplies
 Dynamic AM/FM channel
bandwidth control
 QFN 40-pin, 6x6x0.85 mm
Pb-free/RoHS compliant
 Programmable AM/FM soft mute
 FM stereo-mono blend
 FM hi-blend control
Applications
 Audio/video receivers
 Consumer electronics
 Boom boxes
 Home theater systems
Ordering Information:
See page 49.
Pin Assignments
Si4770/77-A20
NC 1
FMXIP 2
FMXIN 3
RFGND 4
RFREG 5
FMO 6
FMI 7
NC 8
NC 9
AMI 10
GND PAD
30 NC/BLEND
29 DCLK
28 DFS
27 DOUT
26 NC/QOUT
25 NC/IOUT
24 NC/IQFS
23 NC/IQCLK
22 VIO2
21 DBYP
Description
The Si4770/77-A20 broadcast receiver and HD Radio tuner (Si4777 only)
employs an advanced, proven digital low-IF architecture to bring
outstanding receiver performance to high-performance consumer
electronics.
Patents pending
Rev. 0.9 6/12
Copyright © 2012 by Silicon Laboratories
Si4770/77-A20
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.