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GAINTECH

GFT808 Datasheet Preview

GFT808 Datasheet

Audio IC

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GFT808
Audio IC
DESCRIPTION
The GFT808 is a high performance FM transmitter designed for portable multimedia systems. It includes
stereo modulator and FM transmitter incorporated with oscillator circuits. This device employs
sophisticated stereo modulation circuitry to ensure quality audio characteristics. The GFT808 is fabricated
using advanced CMOS process and available as 24-pin QFN package.
FEATURES
2.7V to 3.7V operation
24-Pin QFN
Low current consumption
9mA @ 3.0V (Typical)
Serial programmable interface
Chip scale package (body size, 4mm x 4mm)
Pb
RoHS Compliant
APPLICATIONS
MP3P, MP3 phone, GPS, CD changer, notebook PC, car TV, electronic dictionary, portable DVD and
portable multimedia players(PMP), etc.,
BLOCK DIAGRAM
L_Ch
Input
R_Ch
Input
Pre-
emphasis
LPF
Pre-
emphasis
LPF
Audio Part
MPX
Reference
Input
Crystal
Oscillator
Divider
Divider
PD LF
Frequency Synthesizer
L_ch+R_ch,
L_ch-R_ch &
Pilot
VCO
Frequency
Modulator
RF Out
Version 2.1 (June 2009)
1 GAINTECH INCORPORATED




GAINTECH

GFT808 Datasheet Preview

GFT808 Datasheet

Audio IC

No Preview Available !

GFT808
Audio IC
ELECTRICAL CHRACTERISTICS
Parameter
Symbol
Test condition
Power supply voltage
Vcc
Operating current
Icc Vcc=3.0V
Total harmonic distortion THD Vin=-20dBV
Audio input level
Pre-emphasis time
constant
Limiter input level
LPF cut off frequency
Mute attenuation
Lin-A
TPRE
Lin-LIM
Fcut
AM
Vin=-20dBV, L+R
Output level at 1dB
compression
VO=-3dB
Vin=-20dBV, L+R
Pilot modulation rate
MP Vin=-20dBV, L+R
Input output gain
GN Vin=-20dBV, L+R
Sub-carrier rejection ratio SCR Vin=-20dBV, L+R
Channel balance
BAL Vin=-20dBV, L+R
Channel separation
SEP Vin=-20dBV
RF power
PRF FTX=100MHz
Min.
2.7
7
-
-
40
-14
14
50
10
-1
25
-1
30
96
Typ. Max.
3.0 3.7
9 11
0.1 0.3
- -10
50 60
-12 -10
15 16
60 -
13 16
01
35 -
01
40 -
100 102
Units
V
mA
%
dBV
µsec
dBV
kHz
dB
%
dB
dB
dB
dB
dBµV
ABSOLUTE MAXIMUM RATINGS
Parameters
Symbol
Power supply voltage
Vcc
Operating temperature
TOPR
Transmission frequency
FTX
Storage temperature
TSTG
ESD (Human Body model)
Value
4.0
-30 to +85
70 to 120
-35 to +150
2000
Units
V
°C
MHz
°C
V
2 GAINTECH INCORPORATED


Part Number GFT808
Description Audio IC
Maker GAINTECH
Total Page 8 Pages
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