TS634D View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
TS634D Datasheet PDF : 9 Pages
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TS634
POWER DOWN MODE
VCC = ±6Volts, Tamb = 25°C
Symbol
Parameter
Thershold Voltage for Power Down Mode
Vpdw
Iccpdw
Rpdw
Cpdw
Total Power Down Mode Current Consumption
Power Down Mode Ouput Impedance
Power Down Mode Output Capacitance
STANDBY CONTROL
operator 1
Vhigh level
Vhigh level
Vlow level
Vlow level
operator 2
Vlow level
Vhigh level
Vlow level
Vhigh level
POWER DOWN EQUIVALENT SCHEMATIC
.. Vcc +
+
_
Vcc -
POWER
DOWN
.. . Ouput
OUPUT IMPEDANCE IN POWER DOWN MODE
In Power Down Mode the output of the driver is in
"high impedance" state. It is really the case for the
static mode. Regarding the dynamic mode, the im-
pedance decreases due to a capacitive effect of
the collector-substrat and base collector junction.
The impedance behaviour comes capacitive, typi-
cally: 1.4MΩ // 33pF.
INTERMODULATION DISTORTION
The curves shown below are the measurements
results of a single operator wired as an adder with
a gain of 15dB. The operational amplifier is sup-
plied by a symmetric ±6V and is loaded with 25Ω.
Two synthesizers (Rhode & Schwartz SME) gen-
erate two frequencies (tones) (70 & 80kHz or 180
& 280kHz). An HP3585 spectrum analyzer mea-
sures the spurious level at different frequencies.
The curves are traced for different output levels
(the value in the X axis is the value of each tone).
The output levels of the two tones are the same.
The generators and spectrum analyzer are phase
locked to enhance measurement precision.
4/9
Min.
Typ.
Max
Unit
Low Level
High Level 2
0
0.8
V
3.3
150
µA
1.4
ΜΩ
33
pF
OPERATOR STATUS
operator 1
Standby
operator 2
Active
Standby
Standby
Active
Active
Active
Standby
3rd ORDER INTERMODULATION
2 tones : 70kHz and 80kHz
0
-10
-20
-30
-40
90kHz
-50
230kHz
-60
-70
-80
60kHz
-90
-100
220kHz
1
1,5
2
2,5
3
3,5
4
4,5
Vout peak (V)
2 tones : 180kHz and 280kHz
0
-10
-20
-30
-40
-50
80kHz
-60
380kHz
-70
-80
-90
-100
640kHz
740kHz
1
1,5
2
2,5
3
3,5
4
4,5
Vout peak (V)
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