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Si4770-A20-GMR

产品描述RF receiver cons. elect. pro-aud AM/FM rds Rx
产品类别热门应用    无线/射频/通信   
文件大小2MB,共54页
制造商Silicon
标准  
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Si4770-A20-GMR概述

RF receiver cons. elect. pro-aud AM/FM rds Rx

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Si4770/77-A20
H
I G H
- P
ERFORMANCE
C
ONSUMER
E
LECTRONICS
B
ROADCAST
R
ADIO
R
ECEIVER A N D
HD R
ADIO
T
UNER
Features
Worldwide FM band support
(64–108 MHz)
Worldwide AM band support
(520–1710 kHz)
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
Advanced, patented FM channel
equalizer for multipath
interference
Dynamic AM/FM channel
bandwidth control
Programmable AM/FM soft mute
FM stereo-mono blend
FM hi-blend control
AM/FM hi-cut control
AM lo-cut filter
L/R analog and digital (I
2
S) audio
outputs
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
Ordering Information:
See page 49.
Pin Assignments
Si4770/77-A20
LOUT/
MPXOUT
FMAGC1
FMAGC2
DACREF
RCLK/
XTAL2
XTAL1
GPIO1
GPIO2
ROUT
VA
Digital (I
2
S) Zero-IF AM/FM I/Q
outputs (Si4777 only)
1.2 to 5 V power supplies
QFN 40-pin, 6x6x0.85 mm

Pb-free/RoHS
40
39
38
37
36
35
34
33
32
31
compliant
NC
FMXIP
FMXIN
RFGND
RFREG
FMO
FMI
1
2
3
4
5
6
7
8
9
10
30
29
28
27
26
25
24
23
22
21
NC/BLEND
DCLK
DFS
DOUT
NC/QOUT
NC/IOUT
NC/IQFS
NC/IQCLK
VIO2
DBYP
GND PAD
Applications
Audio/video receivers
Consumer electronics
NC
NC
Boom boxes
Home theater systems
AMI
11
12
13
14
15
16
17
18
19
20
A0
A1/INTB
NC/DCLK2
NC/DOUT2
RSTB
SDA
SCL
INTB/DFS2
VIO1
VD
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.

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