TDA7521 ST Microelectronics, TDA7521 Datasheet - Page 8

• Manufacturer Part Number: TDA7521
• Description: Analog Front End
• Manufacturer: ST Microelectronics

TDA7521
Notes: 1. Current or Voltage input, DC coupled
8/11
Pin Number
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
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.
GND_ADC
GND_ADC
VDD_ADC
VCC_ADC
VCC_PRE
VSS_PRE
HFMON
D0/OF
SYNC
D1/UF
Name
BSR
SCK
SDA
MD
D7
D6
D5
D4
D3
D2
LD
Gnd
Gnd
Gnd
Vdd
Vdd
Vdd
Pin
I/O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
Digital Bit Stream input, Right Channel
ADC Mux Sync output (10)
ADC output [MSB]
ADC output
ADC output
ADC output
ADC output
ADC output
(11)
(12)
ADC Ground
ADC 5V Supply
ADC Ground
ADC 5V Supply
ST7 Control I/F Clock input
ST7 Control I/F Data (14)
HF output (13)
Laser Control output (15)
Monitor diode input
Pre_AMP Ground
Pre_AMP 5V Supply
Description