TS612D データシートの表示（PDF） - STMicroelectronics
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TS612D Datasheet PDF : 10 Pages
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TS612
POWER DOWN MODE VCC = ±6Volts, Tamb = 25°C
Symbol
Parameter
Thershold Voltage for Power Down Mode
Vpdw
Iccpdw
Rpdw
Cpdw
Power Down Mode Current Consumption
Power Down Mode Ouput Impedance
Power Down Mode Output Capacitance
STANDBY CONTROL
pin (1)
operator 1
Vhigh level
Vhigh level
Vlow level
Vlow level
pin (7)
operator 2
Vlow level
Vhigh level
Vlow level
Vhigh level
Min.
Typ.
Max
Unit
Low Level
High Level 2
0
0.8
V
3.3
75
µA
1.4
ΜΩ
33
pF
OPERATOR STATUS
operator 1
Standby
Standby
Active
Active
operator 2
Active
Standby
Active
Standby
POWER DOWN EQUIVALENT SHEMATIC
.. Vcc +
+
_
POWER
DOWN
.. . Ouput
Vcc -
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.
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)
2nd ORDER INTERMODULATION
Spurious measurement @ 100kHz
(2 tones : 180kHz and 280kHz)
-55
-60
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 supplied by a symmet-
ric ±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 measures the spu-
rious level at different frequencies.
The curves are traced for different output levels
(the value in the X ax 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.
-65
-70
1,5
2
2,5
3
3,5
4
4,5
Vout peak (V)
3rd ORDER INTERMODULATION
(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)
5/10
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