tda9845t NXP Semiconductors, tda9845t Datasheet - Page 7

• Manufacturer Part Number: tda9845t
• Description: Tv And Vtr Stereo/dual Sound Processor With Digital Identification
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Power supply
The different supply voltages and currents required for the
analog and digital circuits are derived from an internal
band-gap reference circuit. The AF reference voltage is
1
is added. A good ripple rejection is achieved with the
external capacitor C
the high ohmic input of the
DC load on this pin is allowed.
Power-on reset
When a power-on reset is activated by switching on the
supply voltage or because of a supply voltage breakdown,
the 117/274 Hz DPLL, the 117/274 Hz integrator and the
logic will be reset. The AF channel (Main) is muted
( 1 ms).
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
Note
1. Charge device model class A: discharging a 200 pF capacitor through a
THERMAL CHARACTERISTICS
1995 Mar 20
V
V
V
V
T
T
V
R
2
V
stg
amb
P
i
i
i
esd
TV and VTR stereo/dual sound processor
with digital identification
th j-a
P
SYMBOL
SYMBOL
. For a fast setting to
supply voltage (pin 18)
voltage at pins 1, 2 and 20
voltage at pins 3 to 13, 17 and 19
voltage at pins 14 and 15
storage temperature
operating ambient temperature
electrostatic handling for all pins
thermal resistance from junction to ambient in free air
ref
DIP20
SO20
= 100 F/16 V in conjunction with
1
1
2
V
2
V
P
P
an internal start-up circuit
pin (pin 7). No additional
PARAMETER
PARAMETER
7
ESD protection
All pins are ESD protected. The protection circuits
represent the latest state of the art.
Internal circuit
The internal pin loading diagram is given in Fig.7.
note 1
CONDITIONS
series resistor.
0
0.3
0.3
0.3
0.3
25
500
MIN.
VALUE
73
90
Preliminary specification
10
9.0
V
10
+150
+70
+500
P
MAX.
TDA9845
V
V
V
V
V
UNIT
K/W
K/W
C
C
UNIT