TDA7580 Datasheet, PDF (5/31 Pages) STMicroelectronics – FM/AM DIGITAL IF SAMPLING PROCESSOR

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