Document
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uA747C, uA747M
DUAL GENERALĆPURPOSE OPERATIONAL AMPLIFIERS
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SLOS009A − D971, FEBRUARY 1971 − REVISED OCTOBER 1990
• No Frequency Compensation Required • Low Power Consumption • Short-Circuit Protection • Offset-Voltage Null Capability • Wide Common-Mode and Differential
Voltage Ranges
• No Latch-Up • Designed to Be Interchangeable With
Fairchild µA747C and µA747M
D, J, N, OR W PACKAGE (TOP VIEW)
IN − 1 IN + 2 OFFSET 1N2 3 VCC − 4 OFFSET 2N2 5 IN + 6 IN − 7
14 OFFSET 1N1 13 1 VCC +† 12 OUT
11 NC
10 OUT 9 2 VCC +† 8 OFFSET 2N1
description
The uA747 is a dual general-purpose operational amplifier featuring offset-voltage null capability. Each half is electrically similar to uA741.
The high common-mode input voltage range and the absence of latch-up make this amplifier ideal for voltage-follower applications. The device is short-circuit protected and the internal frequency compensation ensures stability without external components. A low-value potentiometer may be connected between the offset null inputs to null out the offset voltage as shown in Figure 2.
The uA747C is characterized for operation from
0°C to 70°C; the uA747M is characterized for
operation over the full military temperature range
of −55°C to 125°C.
uA747m . . . FK PACKAGE (TOP VIEW)
IN + IN − NC OFFSET 1N1 1 VCC +†
OFFSET 1N2 NC
VCC − NC
OFFSET 2N2
3 2 1 20 19
4
18
5
17
6
16
7
15
8
14
9 10 11 12 13
OUT NC NC NC OUT
IN + IN − NC OFFSET 2N1 2 VCC +†
symbol (each amplifier)
ÏÏÏÏÏÏ IN+
+
ÏÏÏÏÏÏ IN−
−
OUT
OFFSET N1
OFFSET N2
NC − No internal connection
† The two positive supply terminals (1 VCC + and 2 VCC +) are connected together internally.
AVAILABLE OPTIONS
PACKAGE
14-PIN
TA
VIO Max AT 25°C
SMALL OUTLINE
CERAMIC DIP PLASTIC DIP FLAT PACK
(D)
(J)
(N)
(W)
0°C to 70°C
6 mV
uA747CD
—
uA747CN
—
−55°C
to 125°C
5 mV
—
uA747MJ
—
uA747MW
The D package is available taped and reeled. Add the suffix R to the device type, (i.e., uA747CDR).
20-PIN CHIP CARRIER
(FK)
—
uA747MFK
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265 • POST OFFICE BOX 1443 HOUSTON, TEXAS 77001
Copyright 1990, Texas Instruments Incorporated 1
uA747C, uA747M DUAL GENERALĆPURPOSE OPERATIONAL AMPLIFIERS
SLOS009A − D971, FEBRUARY 1971 − REVISED OCTOBER 1990
schematic (each amplifier)
IN − IN +
ą
VCC + OUT
OFFSET N2
OFFSET N1
VCC −
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
uA747C
uA747M
UNIT
Supply voltage, VCC + (see Note 1) Supply voltage, VCC − (see Note 1) Differential input voltage (see Note 2)
18
22
V
− 18
− 22
V
± 30
± 30
V
Input voltage any input (see Notes 1 and 3)
± 15
± 15
V
Voltage between any offset null terminal (N1/N2) and VCC − Duration of output short circuit (see Note 4)
± 0.5
± 0.5
V
unlimited
unlimited
Continuous total dissipation
See Dissipation Rating Table
Operating free-air temperature range
0 to 70
−55 to 125
°C
Storage temperature range
−65 to 150
−65 to 150
°C
Case temperature for 60 seconds
FK package
260
°C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds
J or W package
300
°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
D or N package
260
°C
NOTES: 1. All voltage values, unless otherwise noted, are with respect to the midpoint between VCC + and VCC −. 2. Differential voltages are at the noninverting input terminal with respect to the inverting input terminal.
3. The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15 V, whichever is less.
4. The output may be shorted to ground or either power supply. For the uA747M only, the unlimited duration of the short circuit applies at (or below) 125°C case temperature or 75°C free-air temperature.
PACKAGE
D FK J N W
TA ≤ 25°C POWER RATING
800 mW 800 mW 800 mW 800 mW 800 mW
DISSIPATION RATING TABLE
DERATING FACTOR
7.6 mW/°C
DERATE ABOVE TA
45°C
11.0 mW/°C
77°C
11.0 mW/°C
77°C
9.2 mW/°C
63°C
8.0 mW/°C
50°C
TA = 70°C POWER RATING
608 mW 800 mW 800 mW 736 mW 640 mW
TA = 125°C POWER RATING
— 275 mW 275 mW
— 200 mW
2
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265 • POST OFFICE BOX 1443 HOUSTON, TEXAS 77001
ą
uA747C, uA747M
DUAL GENERALĆPURPOSE OPERATIONAL AMPLIFIERS
SLOS009A − D971, FEBRUARY 1971 − REVISED OCTOBER 1990
electrical characteristics at specified free-air temperature, VCC± = ±15 V
PARAMETER
TEST CONDITIONS†
TA‡
uA747C MIN TYP MAX
uA747M UNIT
MIN TYP MAX
VIO
Input offset voltage
VO = 0
25°C Full range
1
6
7.5
1
5
mV
6
∆VIO(adj)
Offset voltage adjust range
25.