TDA7521 Datasheet, PDF (8/11 Pages) STMicroelectronics – Analog Front End

TDA7521
Pin Number
Name
Pin
Description
24
BSR
I
Digital Bit Stream input, Right Channel
25
SYNC
O
ADC Mux Sync output (10)
26
D7
O
ADC output [MSB]
27
D6
O
ADC output
28
D5
O
ADC output
29
D4
O
ADC output
30
D3
O
ADC output
31
D2
O
ADC output
32
D1/UF
O
(11)
33
D0/OF
O
(12)
34
GND_ADC
Gnd
ADC Ground
35
VDD_ADC
Vdd
ADC 5V Supply
36
GND_ADC
Gnd
ADC Ground
37
VCC_ADC
Vdd
ADC 5V Supply
38
SCK
I
ST7 Control I/F Clock input
39
SDA
I/O
ST7 Control I/F Data (14)
40
HFMON
O
HF output (13)
41
LD
O
Laser Control output (15)
42
MD
I
Monitor diode input
43
VSS_PRE
Gnd
Pre_AMP Ground
44
VCC_PRE
Vdd
Pre_AMP 5V Supply
Notes: 1. Current or Voltage input, DC coupled
2. Precision Resistor connected between Rext and ground
3. These pins are to be left unconnected
4. Internally generated, need external filter ing cap
5. Buffered Vcc/2 Output
6. Driven by IC6D, active high
7. Dirven by IC6D, active low
8. 1 Vrms max., VCC/2 DC component
9. Needs RC-C externals network
10.High in correspondence of the HF sample preceding the AC one
11.LSB+1 of the HF ADC, Underflow bit of the servo one
12.LSB of the HF ADC, Overflow bit of the servo one
13.Can be selected among HF, AC, BD, E, F (via control interface)
14.Bidirectional, needs a pull-up resistor to 5 V line
15.Drives an external pnp.
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