參數(shù)資料
型號(hào)： 935233970512
廠商： NXP SEMICONDUCTORS
元件分類： 噪聲抑制
英文描述： B Type, DOLBY NOISE REDUCTION IC, PDSO32
封裝： 7.50 MM, PLASTIC, SOT-287-1, SOP-32
文件頁數(shù)： 9/31頁
文件大小： 228K
代理商： 935233970512
1998 Mar 13
17
Philips Semiconductors
Product specication
Dolby* Pro Logic Surround;
Incredible Sound
SAA7710T
DSP_RESET
The DSP_RESET pin is active LOW and has an internal
pull-up resistor. To enable a proper switch-on of the supply
voltage a capacitor should be connected between this pin
and VSS. The capacitor value is such that the chip is in a
reset state as long as the power supply is not stabilized.
The DSP_RESET has the following functions:
The bits of the input selector control register are set to
logic 0 (see Table 4)
The program counter is set to address 0000H
The I2C-bus interface is initialised; the SDA pin is
guaranteed high-impedance.
When the level on the DSP_RESET pin is HIGH, the DSP
program starts to run.
When the level on the DSP_RESET pin is low, the SDA pin
is asynchronously set to a high-impedance state. In the
absence of a clock and during the power-up reset, the SDA
line is high-impedance.
TEST MODE CONNECTIONS (TSCAN, RTCB AND SHTCB
PINS
)
The TSCAN, RTCB and SHTCB pins are used to put the
chip in test mode and to test the internal connections.
Each pin has an internal pull-down resistor to ground.
In the application these pins can be left open-circuit or
connected to ground.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC134).
THERMAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
VDD
DC supply voltage
0.5
+6.5
V
DD
voltage difference between two VDDx pins
550
mV
Vi(max)
maximum input voltage
0.5
VDD + 0.5 V
lIK
DC input clamp diode current
Vi < 0.5 V or
Vi >VDD + 0.5 V
10
mA
lOK
DC output clamp diode current output
type 4 mA
Vo < 0.5 V or
Vo >VDD + 0.5 V
20
mA
lO
DC output source or sink current output
type 4 mA
0.5V<Vo <VDD + 0.5 V
20
mA
lDD
DC output source or sink current output
type 4 mA
0.5V<Vo <VDD + 0.5 V
20
mA
lDD
DC VDD supply current per pin
50
mA
lSS
DC VSS supply current per pin
50
mA
VESD
ESD sensitivity for all pins
human body model
100 pF; 1500
3000
V
machine model all pins except pin OSC
200 pF; 2.5
H; 0
300
V
machine model pin OSC
200 pF; 2.5
H; 0
250
V
LTCH
latch-up protection
CIC spec/test method
100
mA
Ptot
total power dissipation
700
mW
Tamb
operating ambient temperature
40
+85
°C
Tstg
storage temperature
65
+150
°C
SYMBOL
PARAMETER
VALUE
UNIT
Rth j-a
thermal resistance from junction to ambient in free air
57
K/W
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