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TC913BCPA の電気的特性と機能

TC913BCPAのメーカーはTelCom Semiconductorです、この部品の機能は「DUAL AUTO-ZEROED OPERATIONAL AMPLIFIERS」です。


製品の詳細 ( Datasheet PDF )

部品番号 TC913BCPA
部品説明 DUAL AUTO-ZEROED OPERATIONAL AMPLIFIERS
メーカ TelCom Semiconductor
ロゴ TelCom Semiconductor ロゴ 




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TC913BCPA Datasheet, TC913BCPA PDF,ピン配置, 機能
1
TC913A
TC913B
DUAL AUTO-ZEROED OPERATIONAL AMPLIFIERS
FEATURES
s First Monolithic Dual Auto-Zeroed Operational
Amplifier
s Chopper Amplifier Performance Without External
Capacitors
— VOS ........................................................ 15µV Max
— VOS Drift ....................................... 0.15µV/°C Max
— Saves Cost/Assembly of Four "Chopper"
Capacitors
s SOIC Packages Available
s High DC Gain ................................................. 120dB
s Low Supply Current ...................................... 650µA
s Low Input Voltage Noise
(0.1 Hz to 10 Hz) ........................................ 0.65µVP-P
s Wide Common-Mode
Voltage Range ................................. VSS to VDD – 2V
s High Common-Mode Rejection .................... 116dB
s Dual or Single Supply Operation ....±3.3V to ±8.3V
+6.5V to +16V
s Excellent AC Operating Characteristics
— Slew Rate ............................................. 2.5V/µsec
— Unity-Gain Bandwidth ............................. 1.5MHz
s Pin Compatible With LM358, OP-14, MC1458,
ICL7621, TL082, TLC322
ORDERING INFORMATION
Part No.
TC913ACOA
TC913ACPA
TC913BCOA
TC913BCPA
Package
8-Pin SOIC
8-Pin Plastic DIP
8-Pin SOIC
8-Pin Plastic DIP
Temp.
Range
Maximum
Offset
Voltage
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
15µV
15µV
30µV
30µV
GENERAL DESCRIPTION
The TC913 is the world's first complete monolithic,
dual auto-zeroed operational amplifier. The TC913 sets a
new standard for low-power, precision dual-operational
amplifiers. Chopper-stabilized or auto-zeroed amplifiers
offer low offset voltage errors by periodically sampling
offset error, and storing correction voltages on capacitors.
Previous single amplifier designs required two user-sup-
plied, external 0.1µF error storage correction capacitors —
much too large for on-chip integration. The unique TC913
architecture requires smaller capacitors, making on-chip
integration possible. Microvolt offset levels are achieved
and external capacitors are not required.
The TC913 system benefits are apparent when con-
trasted with a TC7650 chopper amplifier circuit implemen-
tation. A single TC913 replaces two TC7650's and four
capacitors. Five components and assembly steps are elimi-
nated.
The TC913 pinout matches many popular dual-
operational amplifiers: OP-04, TLC322, LM358, and
ICL7621 are typical examples. In many applications,
operating from dual 5V power supplies or single supplies,
the TC913 offers superior electrical performance, and can
be a functional drop-in replacement; printed circuit board
rework is not necessary. The TC913's low offset voltage
error eliminates offset voltage trim potentiometers often
needed with bipolar and low-accuracy CMOS operational
amplifiers.
The TC913 takes full advantage of TelCom's propri-
etary CMOS technology. Unity gain bandwidth is 1.5 MHz
and slew rate is 2.5 V/µsec.
FUNCTIONAL BLOCK DIAGRAM
2
3
4
5
6
PIN CONFIGURATION (SOIC and DIP)
VSS
4
VDD
8
OUT A 1
–IN A 2
+IN A 3
VSS 4
A
–+ B
+–
8 VDD OUT A 1
7 OUT B –IN A 2
6 –IN B
5 +IN B
+IN A 3
VSS 4
A
–+ B
+–
8 VDD
7 OUT B
6 –IN B
5 +IN B
TC913ACPA
TC913BCPA
TC913ACOA
TC913BCOA
VOS CORRECTION AMPLIFIER
+
A
A
* BB
INTERNAL
OSCILLATOR
(fOSC 200 Hz)
–INPUT A
–INPUT B
–INPUT A
–INPUT B
2
6
5
3
*
+
MAIN
AMPLIFIER
1 OF 2 AMPLIFIERS SHOWN
LOW IMPEDANCE
OUTPUT BUFFER
+
TC913
1 OUTPUT A
7 OUTPUT B
*NOTE: Internal capacitors. No external capacitors required.
7
8
TELCOM SEMICONDUCTOR, INC.
TC913A/B-8 9/3/96
3-269

1 Page





TC913BCPA pdf, ピン配列
DUAL AUTO-ZEROED
OPERATIONAL AMPLIFIERS
1
TC913A
TC913B
Theory of Operation
Each of the TC913's two op-amps actually consists of
two amplifiers. A main amplifier is always connected from
the input to the output. A separate nulling amplifier alter-
nately nulls its own offset and then the offset of the amplifier.
Since each amplifier is continuously being nulled, offset
voltage drift with time, temperature, and power supply
variations is greatly reduced.
All nulling circuitry is internal and the nulling operation is
transparent to the user. Offset nulling voltages are stored on
two internal capacitors. An internal oscillator and control
logic, shared by the TC913's two amplifiers, control the
nulling process.
Pin Compatibility
The TC913 pinout is compatible with OP-14, LM358,
MC1458, LT1013, TLC322, and similar dual op amps. In
many circuits operating from single or ±5V supplies, the
TC913 is a drop-in replacement offering DC performance
rivaling that of the best single op amps.
The TC913's amplifiers include a low-impedance class
AB output buffer. Some previous CMOS chopper amplifiers
used a high-impedance output stage which made open-loop
gain dependent on load resistance. The TC913's open-loop
gain is not dependent on load resistance.
Overload Recovery
The TC913 recovers quickly from output saturation.
Typical recovery time from positive output saturation is
20msec. Negative output saturation recovery time is typi-
cally 5msec.
Avoiding Latch-Up
Junction-isolated CMOS circuits inherently contain a
parasitic p-n-p-n transistor circuit. Voltages exceeding the
supplies by 0.3V should not be applied to the device pins.
Larger voltages can turn the p-n-p-n device on, causing
excessive device power supply current and power dissipa-
tion. The TC913's power supplies should be established at
the same time or before input signals are applied. If this is
not possible, input current should be limited to 0.1mA to
avoid triggering the p-n-p-n structure.
2
3
4
5
6
7
TELCOM SEMICONDUCTOR, INC.
8
3-271


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共有リンク

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部品番号部品説明メーカ
TC913BCPA

Dual Auto-Zeroed Operational Amplifiers

Microchip Technology
Microchip Technology
TC913BCPA

DUAL AUTO-ZEROED OPERATIONAL AMPLIFIERS

TelCom Semiconductor
TelCom Semiconductor


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