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TDA7580 Datasheet(PDF) 5 Page - STMicroelectronics

Part # TDA7580
Description  FM/AM DIGITAL IF SAMPLING PROCESSOR
PDF  31 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7580 Datasheet(HTML) 5 Page - STMicroelectronics

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TDA7580
PIN DESCRIPTION
N°
Name
Type
Description
Notes
After
Reset
1
VHI
A
Internally generated IFADC Opamps
2.65V (@VDD=3.3V) Reference Voltage
Pin for external filtering
It needs external 22
µF
and 220nF ceramic
capacitors
2
VCM
A
Internally generated Common Mode
1.65V (@VDD=3.3V) Reference Voltage
Pin for external filtering
It needs external 22
µF
and 220nF ceramic
capacitors
3
VLO
A
Internally generated IFADC Opamps
0.65V (@VDD=3.3V) Reference Voltage
Pin for external filtering
It needs external 22
µF
and 220nF ceramic
capacitors
4
INP
A
Positive IF signal input from Tuner
2.0Vpp @VDD=3.3V
5
INN
A
Negative IF signal input from Tuner
2.0Vpp @VDD=3.3V
6
VCMOP
A
Internally generated Modulator Opamps
Common Mode 2.65V (@VDD=3.3V)
Reference Voltage Pin for external
filtering
It needs external 22
µF
and 220nF ceramic
capacitors
7
GNDSD
G
IFADC Modulator Analogue Ground
Clean Ground, to be
star-connected to
voltage regulator ground
8
GNDOSC
G
Oscillator Ground
Clean Ground, to be
star-connected to
voltage regulator ground
9
XTI
I
High impedance oscillator input (quartz
connection) or clock input when in
Antenna Diversity slave mode
Maximum voltage swing
is VDD
10
XTO
O
Low impedance oscillator output (quartz
connection)
11
VDDOSC
P
Oscillator Power Supply
3.3V
12
VDDMTR
P
Tuner reference clock and AGCKeying
DAC Power Supply
1.8V
13
CKREFP
B
Tuner reference clock positive output.
FM 100kHz
AMEU 18kHz
With internal pull_up, on
at reset
Output
14
CKREFN
B
Tuner reference clock negative output.
FM 100kHz
AMEU 18kHz
With internal pull_up, on
at reset
Output
15
AGCKEY
A
DAC output for Tuner AGCKeying
1.5kohm ±30% output
impedance. 1Vpp ±1%
output dynamic range
16
GNDMTR
G
Tuner reference clock and AGC keying
DAC Ground



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