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SAE800
Function and Industrial ICs
SHEMENS
Programmable SAE 800
Single-lDual-lTriple- Tone Gong
Preliminary Data Bipolar IC
Features
0 Supply voltage range 2.8 V to 18 V
0 Few external components (no electrolytic capacitor)
o 1 tone, 2 tones, 3 tones programmable
o Loudness control
0 Typical standby current1 pp
Constant current output stage (no oscillation)
High-efficiency power stage
Short-circuit protection P-DlP-8-4
Thermal shutdown
i/ O "
/l 11 o
f m co
9/} iEA01018
P-DSO-8-1
Type Ordering Code Package
SAE 800 Q67000-A8339 P-DIP-8-4
SAE 800 G Q67000-A8340 P-DSO-8-1 (SMD)
V New type
Functional Description
The SAE 800 is a single-tone, dual-tone or triple-tone gong IC designed for a very wide supply
voltage range. If the oscillator is set tofi = 13.2 kHz for example, the IC will issue in triple-tone-
mode the minor and major third e2 - C sharp - a, corresponding to 660 Hz - 550 Hz - 440 Hz, in
dual-tone-mode the minor third e2 - C sharp, and in single-tone-mode the tone e2 (derived from
the fundamental frequency); J' --fi / 20,f2 --fi / 24,f3 --fi / 30).
When it is not triggered, the IC is in a standby state and only draws a few pp. It comes in a compact
P-DIP-8-1 or P-DSO-8-1 (SMD) package and only requires a few external components.
Semiconductor Group 1 09.94
SIEMENS
SAE 800
SAE 800
|_l|_||_||_l
|EP01019
SAE 800 G
El 7 E2
6 Cosc
5 Rose
Cosc EP01020
Pin Configuration
(top view)
Pin Definitions and Functions
Pin Symbol Function
1 GND Ground
2 Q Output
3 VS Supply Voltage
4 L Loudness Control
5 Rosc Oscillator Resistor
6 Cosc Oscillator Capacitor
7 E2 Trigger 2 (dual tone)
8 E1 Trigger1 (single tone)
Functional Description (cont'd)
An RC combination is needed to generate the fundamental frequency (pin Rose, C050). The volume
can be adjusted with another resistor (pin L). The loudspeaker must be connected directly between
the output Q and the power supply VS. The current-sink principle combined with an integrated
thermal shutdown (with hysteresis) makes the IC overload-protected and shortcircuit-protected.
There are two trigger pins (E1, E2) for setting single-tone, dual-tone or triple-tone mode.
Semiconductor Group
