OP279GS-REEL Analog Devices Inc, OP279GS-REEL Datasheet

IC OPAMP GP R-R 5MHZ DUAL 8SOIC

OP279GS-REEL

Manufacturer Part Number
OP279GS-REEL
Description
IC OPAMP GP R-R 5MHZ DUAL 8SOIC
Manufacturer
Analog Devices Inc
Datasheet

Specifications of OP279GS-REEL

Rohs Status
RoHS non-compliant
Amplifier Type
General Purpose
Number Of Circuits
2
Output Type
Rail-to-Rail
Slew Rate
3 V/µs
Gain Bandwidth Product
5MHz
Current - Input Bias
300nA
Voltage - Input Offset
4000µV
Current - Supply
3.75mA
Current - Output / Channel
50mA
Voltage - Supply, Single/dual (±)
4.5 V ~ 12 V, ±2.25 V ~ 6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
-3db Bandwidth
-
a
GENERAL DESCRIPTION
The OP179 and OP279 are rail-to-rail, high output current,
single-supply amplifiers. They are designed for low voltage
applications that require either current or capacitive load drive
capability. The OP179/OP279 can sink and source currents of
Applications that benefit from the high output current of the
OP179/OP279 include driving headphones, displays, transform-
ers and power transistors. The powerful output is combined with a
unique input stage that maintains very low distortion with wide
common-mode range, even in single supply designs.
The OP179/OP279 can be used as a buffer to provide much
greater drive capability than can usually be provided by CMOS
outputs. CMOS ASICs and DAC often have outputs that can
swing to both the positive supply and ground, but cannot drive
more than a few milliamps.
Bandwidth is typically 5 MHz and the slew rate is 3 V/ s, making
these amplifiers well suited for single supply applications that
require audio bandwidths when used in high gain configurations.
Operation is guaranteed from voltages as low as 4.5 V, up to 12 V.
60 mA (typical) and are stable with capacitive loads to 10 nF.
Very good audio performance can be attained when using the
OP179/OP279 in 5 volt systems. THD is below 0.01% with a
600
is less than 3.5 mA per amplifier.
The single OP179 is available in the 5-lead SOT-23-5 package.
It is specified over the industrial (–40 C to +85 C) tempera-
ture range.
The OP279 is available in 8-lead TSSOP and SO-8 surface
mount packages. They are specified over the industrial (–40 C
to +85 C) temperature range.
Current Operational Amplifiers
load, and noise is a respectable 21 nV/ Hz. Supply current
Rail-to-Rail High Output
PIN CONFIGURATIONS
8-Lead SOIC and TSSOP
OUT A
+IN A
OUT A
+IN A
+IN A
IN A
IN A
NC
V
SO-8 (S) and RU-8
V
5-Lead SOT-23-5
V+
NC = NO CONNECT
8-Lead SOIC
1
2
3
4
1
2
3
4
1
2
3
(S Suffix)
(RT-5)
OP179
OP279
OP179
OP179/OP279
5
4
8
7
6
5
8
7
6
5
V–
NC
V+
OUT A
NC
V+
OUT B
+IN B
IN A
IN B

Related parts for OP279GS-REEL

OP279GS-REEL Summary of contents

Page 1

GENERAL DESCRIPTION The OP179 and OP279 are rail-to-rail, high output current, single-supply amplifiers. They are designed for low voltage applications that require either current or capacitive load drive capability. The OP179/OP279 can sink and source currents ...

Page 2

OP179/OP279–SPECIFICATIONS ELECTRICAL SPECIFICATIONS Parameter INPUT CHARACTERISTICS Offset Voltage OP179 OP279 Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Short-Circuit Limit Output ...

Page 3

... S, RT, RU Package . . . . . . . . . . . . . . . . . . . – +150 C Lead Temperature Range (Soldering, 60 sec 300 C Package Temperature Range OP179GRT – +85 C OP279GS – +85 C OP279GRU – +85 C CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. ...

Page 4

Performance Characteristics OP179/OP279 160 140 A 620 OP AMPS 120 100 –2.5 –1.5 –0.5 0.5 1.5 2.5 INPUT OFFSET – ...

Page 5

5 5 2.5V 4.5 CM 4.0 –50 – 100 TEMPERATURE – C 120 V 2. 100 A 80 –PSRR 60 ...

Page 6

OP179/OP279 100 100 1k 10k FREQUENCY – Hz THEORY OF OPERATION The OP179/OP279 is the latest entry in Analog Devices’ expand- ing family of single-supply devices, ...

Page 7

In order to achieve rail-to-rail output behavior, the OP179/OP279 design employs a complementary common-emitter (or g output stage (Q15-Q16), as illustrated in Figure 2. These amplifiers provide output current until they are forced into saturation, which occurs at approximately 50 ...

Page 8

OP179/OP279 0.01 0.100 CAPACITIVE LOAD – 1/2 OP279 100mV p-p 20V The first step is to determine the value of the resistor, R good ...

Page 9

ON-OFF settling time of the circuit, R2 can be reduced less. Although the integrator’s time constant chosen here is 1 ms, room exists to trade off circuit bandwidth and noise by increasing R3 and decreasing C2. ...

Page 10

OP179/OP279 P1 TX GAIN ADJUST R2 9.09k TO TELEPHONE LINE 6.2V Z 10k O R4 110 6. 10k R10 10k 10k R13 2 ...

Page 11

A Single-Supply Headphone Amplifier Because of its high speed and large output drive, the OP179/P279 makes for an excellent headphone driver, as illustrated in Figure 13. Its low supply operation and rail-to-rail inputs and outputs give a maximum signal swing ...

Page 12

OP179/OP279 Capacitors should film types preferably, such as polypropylene or polystyrene, or NPO (COG) ceramic for smaller values. Somewhat lesser performance is available with the use of polyester capacitors. Parasitic Effects in Sallen-Key Implementations In designing ...

Page 13

Band-pass Configurations The MFB band-pass filter using an OP179/OP279 section is shown in Figure 17. This filter provides reasonably stable medium Q designs for frequencies few kHz. For best pre- dictability and stability, operation should be ...

Page 14

OP179/OP279 The crossover example frequency of 500 Hz can be shifted lower or higher by frequency scaling of either resistors or capacitors. In configuring the circuit for other frequencies, complementary LP/ HP action must be maintained between sections, and component ...

Page 15

OP179/OP279 Spice Macro Model OP179/OP279 SPICE Macro Model ARG / ADI Copyright 1994 by Analog Devices Refer to “README.DOC” file for License Statement. Use of this model indicates your acceptance of the terms and pro- visions in the License Statement. ...

Page 16

OP179/OP279 8-Lead TSSOP (RU-8) 0.122 (3.10) 0.114 (2.90 PIN 1 0.0256 (0.65) 0.006 (0.15) BSC 0.002 (0.05) 0.0433 (1.10) MAX 0.0118 (0.30) SEATING 0.0079 (0.20) 0.0075 (0.19) PLANE 0.0035 (0.090) 0.0709 (1.800) 0.0590 (1.500) 0.0512 (1.300) ...

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