NTE NTE928 Datasheet

NTE928

Integrated Circuit

Low Power Dual Operational Amplifier

Description:

Utilizing the circuit designs perfected for recently introduced Quad Operational Amplifiers, the
NTE928 dual operational amplifier features low power drain, a common mode input voltage range
extending to ground/V

This amplifier has several distinct advantages over standard operational amplifier types in single sup­ply applications. It can operate at supply voltages as low as 3.0 V olts or as high as 32 Volts with quies­cent currents about one–fifth of those associated with the NTE941 (on a per amplifier basis). The
common mode input range includes the negative supply , thereby eliminating the necessity for exter­nal biasing power supply voltage.

Features:

D Short Circuit Protected Outputs
D True Differential Input Stage
D Single Supply Operation: 3.0 to 32 Volts
D Low Input Bias Currents
D Internally compensated
D Common Mode Range Extends to Negative Supply
D Single and Split Supply Operation

, and Single Supply or Split Supply Operation.

EE

Maximum Ratings:

Power Supply Voltages

Single Supply, V
Split Supplies, V

Input Differential Voltage Range (Note 1), V

CC
CC VEE

IDR

Input Common Mode Voltage Range (Note 2), V
Input Forward Current (V
Output Short Circuit Duration, t
Junction Temperature, T
Operating Ambient Temperature Range, T

–0.3V, Note 3), I

I

S

J

IF

A

ICR

–0.3 to 32V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–65° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0° to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

32V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±16V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±32V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

50mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Note 1. Split Power Supplies
Note 2. For supply voltages less than 32V, the absolute maximum input voltage is equal to the supply

voltage.

Note 3. This input current will only exist when the voltage is negative at any of the input leads. Normal

output states will reestablish when the input voltage returns to a voltage greater than 0.3V.

Electrical Characteristics: (VCC = 5V, VEE = Gnd, TA = +25°C unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Input Offset Voltage V

Average Temperature Coefficient

∆VIO/∆T 0° ≤ TA ≤ +70°C – 7.0 – µV/°C

VCC = 5V to 30V,

IO

VIC =0 to VCC–1.7V,
VO ] 1.4V, RS = 0Ω

0° ≤ TA ≤ +70°C – – 9.0 mV

– 2.0 7.0 mV

of Input Offset Voltage

Input Offset Current I

IO

– 5.0 50 nA

0° ≤ TA ≤ +70°C – – 150 nA

Average Temperature Coefficient

∆IIO/∆T 0° ≤ TA ≤ +70°C – 10 – pA/°C

of Input Offset Current

Input Bias Current I

IB

– –45 –250 nA

0° ≤ TA ≤ +70°C – –50 –500 nA

Input Common–Mode Voltage V

ICR

VCC = 30V, Note 4

Range

Differential Input Voltage Range V
Large Signal Open–Loop A

IDR

VOL

RL = 2kΩ, VCC = 15V,

Voltage Gain For Large VO Swing

0° ≤ TA ≤ +70°C 0 – 28 V

0° ≤ TA ≤ +70°C 15 – – V/mV

0 – 28.3 V

– – V

CC

V

25 100 – V/mV

Channel Separation 1kHz ≤ f ≤ 20kHz, Input Referenced – –120 – dB
Common–Mode Rejection Ratio CMRR RS ≤ 10kΩ 65 70 – dB
Power Supply Rejection Ratio PSRR 65 100 – dB
Output Voltage Range V
Output Voltage – High Limit V

Output Voltage – Low Limit V
Output Source Current I
Output Sink Current I

OR
OH

OL
O+
O–

RL = 2kΩ 0 – 3.3 V
VCC = 30V,

0° ≤ TA ≤ +70°C

RL = 2kΩ 26 – – V

RL = 10kΩ 27 28 – V
VCC = 5V, RL = 10kΩ, 0° ≤ TA ≤ +70°C – 5 20 mV
VID = +1V, VCC = 15V 20 40 – mA
VID = –1V, VCC = 15V 10 20 – mA
VID = –1V, VO = 200mV 12 50 – µA

Output Short–Circuit to GND I
Power Supply Current I

os

CC

Note 5 – 40 60 mA
VO = 0, RL = ∞,

0° ≤ TA ≤ +70°C

VCC = 30V – 1.5 3.0 mA

VCC = 5V – 0.7 1.2 mA

Note 4. The input common–mode voltage or either input signal voltage should not be allowed to go

negative by more than 0.3V. The upper end of the common–mode voltage range is
V

–1.7V, but either or both inputs can goto +32V without damage.

CC

Note 5. Short circuit from the output to V

can cause excessive heating and eventual destruction.

CC

Destructive dissipation can result from simultaneous shorts on all amplifiers.