SAS590 ,Switching Amplifiers for 4 Touch KeysFeatures
High input sensitivity
Low saturation voltage of the driver outputs
Low temperature ..
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SAS580-SAS590
SAS580 / SAS590 / Switching Amplifiers for 4 Touch Keys
Switching Amplifiers for 4 Touch Keys SAS 580
SAS 590
Bipolar IC
Type i Ordering code ( Package
SAS 580 Q 67000-S28
SAS 590 " 67000-S29 i ) DIP 18
Channel memory tor use in radio and TV sets. The four stages can be selected by touching
the sensor area. Each stage is provided with an indicator output. The tuning voltage is applied
to a common output. SAS 580 is the basic component for the first 4 channels. The number
of channels can be increased by 4 with each additionally connected SAS 590 amplifier.
Features
High input sensitivity
Low saturation voltage of the driver outputs
Low temperature drift of the tuning switches
Driver outputs to control filament lamps, LEDs,
neon lamps, or nixie tubes
Standby operation possible
Ring counter up to 10 kHz
No external diode matrix
Single power supply
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Maximum ratings il
Supply voltage (without series resistor) V16 36 V i-.'.'....
Current consumption Ls 15 mA ..tri..
(for operation with higher voltage, s'si
a series resistor is required) ci.-"
Driver current h, k, 17, 19 55 mA [-i:
Max. driver current, tmax, s; 2 s 13, fs, I7, 19 max. 100 mA i-'.,:.:
Junction temperature T] 150 "C ':C:"
Storage temperature range Tstg -40 to 125 "C tr:'
Thermal resistance (system-air) Rm SA 90 K/W t':
Operating range i].---;
Supply voltage1 VH3 10 to 36 V C:-','.
Ambient temperature r, 0 to 70 °C ii'
53 .ii-i.i
SAS 580
SAS 590
Characteristics
with reference to test circuit, V15 =-. 30 V, T, = 25 °C
min typ 1 max
Internal current consumption
channel switched L, 4.5 7 9.5 mA
channel not switched .45 2.9 5 8.5 mA
Voltage at pin 18
during touching keys1...8 V185 3.25 3.7 4.2 V
aftertouching keys1...8 V18h 2.6 2.9 3.2 V
Saturation voltage of driver outputs
RL =1 kQ Vs, Vs, w, Vs 0.8 IE V
RL =30 kQ Va, Vs, w, V9 30 60 mV
Reverse voltage of driver outputs
Lev ==100 “A V3, Vs, w, Vs 60 V
C, = 5 “A V3, Vs, V7, V9 50 V
Tuning voltage V12. V13. V14, V15 0.3 V16 -2 V
Input current of tuning voltage inputs L2, 113,114,115 150 300 nA
Offset voltage of tuning switches') Vmu, V13-” K100 mV
V14711.V15-11 i100 mV
Temperature drift of tuning voltage
switches (TA == 25 to 50 "C)1) v, 5 mV
Resistance of tuning output Run 3 k9
111 < 21:30 LIA
Input current
for channel switching amplifiers h, I4. fs, 18 20 80 200 nA
Input threshold voltage of switching
amplifiers (12, li, [6,18 "--- 80 nA) Va, w, Vs, V8 5.5 V
Switching frequency of ring counter frc 10 kHz
Reset to channel1
Switching pulse level V8.18 15 V
Switching pulse duration Ta 18 70 ps
Switching pulse rise time ts. LH18 1 us
Switching to the next stage
Switching pulse level V8.18 15 V
Switching pulse duration Ts 18 2.5 ps
Switching pulse rise time ts, LH 18 1 us
Characteristics of the Z diode
z voltage (11690.” +3 mA) v2 ( 34 l l 39 I v
1) measured between connected input and pin 11.
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