SAE800G Infineon Technologies, SAE800G Datasheet - Page 6
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SAE800G
Manufacturer Part Number
SAE800G
Description
IC TONE GONG SGL/DUAL/TRPL PDSO8
Manufacturer
Infineon Technologies
Type
Tone Gongr
Datasheet
1.SAE800.pdf
(14 pages)
Specifications of SAE800G
Applications
Tone Gong
Mounting Type
Surface Mount
Package / Case
DSO-8
Brief Features
Loudness Control, Thermal Shutdown
Supply Voltage Range
2.8V To 18V
Operating Temperature Range
-25°C To +125°C
Digital Ic Case Style
SOIC
No. Of Pins
8
Operating Temperature
RoHS Compliant
Ic Function
Tone Generator
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
SAE800GNK
SAE800GX
SAE800GXK
SP000080996
SAE800GX
SAE800GXK
SP000080996
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SAE800G
Manufacturer:
SIEMENS
Quantity:
5 510
Part Number:
SAE800G
Manufacturer:
INFINEON/英飞凌
Quantity:
20 000
Digital / Analog Converter, Loudness and Junction Control
The DAC converts the 4-bit words from the logic into the appropriate staircase currents with the
particular tone frequency. The sum current
generator produces the DAC reference current
external resistor to ground. The chip temperature is monitored by the junction control. At
temperatures of more then approx. 170 ˚C the stop input will switch the output current
output current is enabled again once the chip has cooled down to approx. 150 ˚C.
Current Amplifier
The current amplifier with a gain of 1600 boosts the current
approx. 750 mA maximum. The output stage consists of an NPN transistor with its emitter on power
GND and collector on pin Q.
The current control insures that the output stage only conducts defined currents. In conjunction with
the integrated thermal shutdown, this makes the configuration shortcircuit-protected within wide
limits. Because of the absence of feedback the circuit is also extremely stable and therefore
uncritical in applications. Resistor
resistive component of the loudspeaker impedance
The output amplitude of the current
(only 3 tone mode), so
The following applies:
I
3 x B x (
the result is:
R
R
Semiconductor Group
Q
L
L
=
=
=
I
R
R
Imax
Q
Q
x 3 x B x (
x K x (
V
x B = (
L
/
R
L
V
)
V
L
S
/ 0.8
0.8
V
–
L
V
/ 0.8
V
sat
V
R
S
) /
S
L
/
)
has to be scaled for this point.
R
V
R
Q
S
Q
)
0.8
R
V
L
I
S
on pin L sets the output voltage swing. This assumes that the
I
reaches the maximum
/
R
Q
I
I
drives the following current amplifier. The loudness
I
6
L
for all three tones. This requires connecting an
R
Q
responds similarly as the resistance
with: B = 1600
with: K = 4800
I
I
Imax
I
from approx. 470 A maximum to
3 x
V
L
/
R
L
at a time
I
I
to zero. The
SAE 800
t
of 2.33 s
R
L
.