ZTA358

Dual Operational Amplifiers

FEATURES DESCRIPTION
● Wide Range of Supply Voltages The ZTA358 consists of two independent,
● Low Supply Current Drain Independent of high-gain, (internally) frequency-compensated
the Supply Voltage operational amplifiers, which were designed
● Low Input Biasing Current specifically to operate from a single power
● Low Input Offset Voltage and Offset Current supply over a wide range of voltages. The
● Input Common-Mode Voltage Range device operation from split power supplies is
Including the Ground also possible and the low power supply current
● Differential Input Voltage Range Equal to the drain is independent of the magnitude of the
Power Supply Voltage power supply voltage.
● DC Voltage Gain 100V/ mV (Typ.) Its application areas include transducer
● Internal Frequency Compensation amplifiers, dc gain blocks and all the
conventional operational amplifier circuits.
APPLICATIONS
● Battery Charger Pins Configuration
● Cordless Telephone Top View SOP-8L
● Switching Power Supply OUT1 1 8 VCC
IN1− 2 7 OUT2
ORDERING INFORMATION IN1+ 3 6 IN2−
PART PACKAGE RoHS Ship, Quantity
GND 4 5 IN2+
ZTA358S SOP-8L Yes Tape and Reel

Block Diagram
 ZTA358
Typical Single-Supply Applications +
(V = 5.0 VDC)

Non-Inverting DCGain (0V Output)

Note: R is not needed from +VIN to 1/2 ZTA358 due to

temperature independent IIN.

DC Summing Amplifier Power Amplifier

(VIN’S ≥ 0 VDC and VO ≥ 0 VDC)

VO = 0 VDC for VIN = 0 VDC

Where: VO = V1 + V2 – V3 – V4 AV = 10
(V1 + V2) ≥ (V3 + V4) to keep VO > 0 VDC

“ BI-QUAD” RC Active Band-Pass Filter

fO = 1kHz, Q = 50,. AV = 100 (40dB)

Fixed Current Sources Lamp Driver

I2 = (R1/ R2) × I1
 ZTA358
Typical Single-Supply Applications (Continued…)

Square Wave Oscillator Pulse Generator

Absolute Maximum Ratings Pins Description

Supply Voltage VCC ……………………………………………….. +45V Pin Description
Input Voltage VIN ……………………………………. −0.3V to +45V 1 OUT1 (AMPL #1)
Input Current IIN (at VIN = −0.3V) …………………………. 50mA
2 IN1− (AMPL #1)
Operating Temperature Range ……………. –40°C to +125°C
3 IN1+ (AMPL #1)
ESD ……...………………………………………………………………. 700V
4 GND
CAUTION: Stresses above those listed in “Absolute 5 IN2+ (AMPL #2)
Maximum Ratings” may cause permanent damage to 6 IN2− (AMPL #2)
the device. This is a stress only rating and operation of
7 OUT2 (AMPL #2)
the device at these or any other conditions above those
8 VCC
indicated in the operational sections of this specification
is not implied.

Electro-Static Discharge Sensitivity

This integrated circuit can be damaged by ESD.
It is recommended that all integrated circuits
be handled with proper precautions. Failure
to observe proper handling and installation procedures
can cause damage. ESD damage can range from subtle
performance degradation to complete device failure.
 ZTA358
Electrical Specifications
(At specified free-air temperature, VCC = +5V, unless otherwise specified.)

PARAMETER Symbol TEST CONDITIONS (Note) MIN TYP MAX UNIT

VCC = +5V to max, 25°C 3 7

Input Offset Voltage VIO mV
VIC = VICR(min), VO = +1.4V Full range 9
Average Temperature Coefficient
αVIO Full range 7 μV/°C
of Input Offset Voltage
25°C 2 50
Input Offset Current IIO VO = +1.4V nA
Full range 150
Average Temperature Coefficient
αIIO Full range 10 pA/°C
of Input Offset Current
25°C −20 −250
Input Bias Current IIB VO = +1.4V nA
Full range −500
0 to
25°C
Common-Mode Input Voltage VCC−1.5
VICR VCC = +5V to max V
Range 0 to
Full range
VCC−2
VCC = max, RL = 2kΩ Full range 26
High-Level Output Voltage VOH V
VCC = max, RL ≥ 10kΩ Full range 27 28
Low-Level Output Voltage VOL RL ≥ 10kΩ Full range 5 20 mV
Large-Signal Differential Voltage VCC = +15V, RL ≥ 2kΩ 25°C 25 100
AVD V/ mV
Amplification VOUT = +1V to +11V Full range 15
VCC = +5V to max,
Common-Mode Rejection Ratio CMRR 25°C 65 80 dB
VIC = VICR(min)
Supply Voltage Rejection Ratio
kSVR VCC = +5V to max 25°C 65 100 dB
(ΔVCC/ΔVIO)
Crosstalk Attenuation VO1/ VO2 f = 1kHz to 20kHz 25°C 120 dB
VCC = +15V, 25°C −30 −50
VID = +1V, VO = 0V Full range −20
mA
VCC = +15V, 25°C 15 35
Output Current IOUT VID = −1V, VO = +15V Full range 7
VCC = +15V,
25°C 15 28 mA
VID = −1V, VO = +2V
VID = −1V, VO = +200mV 25°C 12 50 μA
Short-Circuit Output Current IOS VID = −1V, VO = +15V 25°C 50 70 mA
VCC = +2.5V, No load Full range 0.7 1.2 mA
Supply Current (Two Amplifiers) ICC VCC = max, VO = 0.5VCC,
Full range 1 2 mA
No load
VCC = +15V, RL = 2kΩ,
Slew Rate VIN = +0.5V to +3V, 25°C 0.35 V/ μs
CL = 100pF, Unity gain
VCC = +30V, f = 100kHz,
Gain Bandwidth VIN = +10mV, RL = 2kΩ, 25°C 700 kHz
CL = 100pF
f = 1kHz, AV = 20dB,
Total Harmonic Distortion RL = 2kΩ, VO = 2Vpp, 25°C 0.04 %
CL = 100pF
Note: All characteristics are measured under the open-loop conditions with zero common-mode input voltage, unless
otherwise specified. Max VCC for testing purposes is +36V, Vccabsmax = +45V. Full range is −40°С to +125°С.
 ZTA358
Typical Characteristics

Inverting Op Amp With Vcc Bias Supply Current

Output Characteristics Current Sinking Output Characteristics: Current Sourcing

Current Limiting Large Signal Frequency Response

 ZTA358
Typical Characteristics (Continued…)

Open Loop Frequency Response Voltage Gain

Voltage Follower Pulse Response Voltage Follower Pulse Response (Small Signal)

Input Current Input Voltage Range

 ZTA358
PACKAGE DIMENSIONS SOP-8L

E C

b e

A2 A θ

A1 H
L

DIMENSION (MM) DIMENSION (INCH)

SYMBOLS
MIN MAX MIN MAX
A 1.300 1.752 0.051 0.069
A1 0.000 0.150 0.000 0.006
A2 1.350 1.550 0.053 0.061
b 0.330 0.510 0.013 0.020
C 5.790 6.200 0.228 0.244
D 4.700 5.110 0.185 0.201
E 3.800 4.000 0.150 0.157
e 1.27 BSC 0.05 BSC
H 0.170 0.254 0.007 0.010
L 0.400 1.270 0.016 0.050
θ 0° 8° 0° 8°