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UA748
PRECISION SINGLE OPERATIONAL AMPLIFIER
s INPUT OFFSET VOLTAGE : 3mV max. OVER s FREQUENCY COMPENSATION WITH A s OPERATION FROM 5V to 15V s LOW POWER CONSUMPTION : s CONTINUOUS SHORT-CIRCUIT PROTECTION s OPERATION AS A COMPARATOR WITH DIFFERENTIAL INPUTS AS HIGH AS 30V s NO LATCH-UP WHEN COMMON-MODE RANGE IS EXCEEDED s SAME PIN CONFIGURATION AS THE LM101A DESCRIPTION The UA748 is a general purpose operational amplifier built on a single silicon chip. The resulting close match and tight thermal coupling gives low offsets and temperature drift as well as fast recovery from thermal transients. s Short-circuit protection s Offset voltage null capability s Large common-mode and differential voltage ranges s Low power consumption s No latch-up The unity-gain compensation specified makes the circuit stable for all feedback configurations, even with capacitive loads. However, it is possible to optimize compensation for best high frequency performance at any gain. The low power dissipation permits high voltage operation and simplifies packaging in full-temperature range systems. PIN CONNECTIONS (top view)
1 - Offset null 1/frequency compensation 2 - Inverting input 3 - Non-inverting input 4 - VCC5 - Offset null 2 6 - Output 7 - VCC+ 8 - Frequency compensation D SO8 (Plastic Micropackage)
TEMPERATURE
SINGLE 30pF CAPACITOR (C1) 50mW AT 15V
N DIP8 (Plastic Package)
ORDER CODE
Package Part Number Temperature Range N UA748C 0C, +70C UA748I -40C, +105C UA748M -55C, +125C Example : UA748CN * * * D * * *
N = Dual in Line Package (DIP) D = Small Outline Package (SO) - also available in Tape & Reel (DT)
1 2 3 4
8 7 6 5
December 2001
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UA748
SCHEMATIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol VCC Vid Vi Ptot Toper Tstg
1.
Parameter Supply voltage Differential Input Voltage Input Voltage Power Dissipation Output Short-circuit Duration Operating Free-air Temperature Range Storage Temperature Range
1)
UA748M
UA748I 22 30 15 500 Infinite
UA748C
Unit V V V mW
-55 to +125
-40 to +105 -65 to +150
0 to +70
C C
Power dissipation must be considered to ensure maximum junction temperature (Tj) is not exceeded.
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UA748
ELECTRICAL CHARACTERISTICS VCC = 15V, Tamb = +25C, C1 = 30pF (unless otherwise specified)
UA748I/M Symbol Parameter Min. Vio Input Offset Voltage (Rs 10k) Tamb = +25C Tmin Tamb Tmax Input Offset Current Tamb = +25C Tmin Tamb Tmax Input Bias Current Tamb = +25C Tmin Tamb Tmax Large Signal Voltage Gain (Vo = 10V, RL = 2k) Tamb = +25C Tmin Tamb Tmax Supply Voltage Rejection Ratio (Rs 10k) Tamb = +25C Tmin Tamb Tmax Supply Current, no load Tamb = +25C Tmin Tamb Tmax Input Common Mode Voltage Range (VCC = 20V) Tamb = +25C Tmin Tamb Tmax Common Mode Rejection Ratio (RS 10k) Tamb = +25C Tmin Tamb Tmax 15 15 80 80 10 12 10 12 10 0.25 96 30 14 13 50 50 25 80 80 Typ. 0.7 Max. 2 3 10 20 75 10 25 15 70 70 3 3 15 15 70 70 10 12 10 12 10 0.25 96 30 14 13 50 Min. Typ. 2 Max. 7.5 10 50 70 250 300 mV UA748C Unit
Iio
1.5
2
nA
Iib
25
70
nA
Avd
100
100
V/mV
SVR
96
96
dB
ICC
1.8
1.8
3 3
mA
Vicm
V
CMR IOS
dB mA
Output short Circuit Current Output Voltage Swing (VCC = 15V) Tamb = +25C RL = 10k RL = 2k Vopp Tmin Tamb Tmax RL = 10k RL = 2k SR tr Kov Zi Ro GBP THD DIio DVio
1.
V
Slew Rate 1) Vi = 10V, RL = 2k, CL = 100pF, unity Gain Rise Time Vi = 20mV, RL = 2k, CL = 100pF, unity Gain Overshoot Vi = 20mV, RL = 2k, CL = 100pF, unity Gain Input Impedance (VCC = 15V) Output Resistance (VCC = 15V) Gain Bandwith Product Vi =10mV, RL = 2k, CL = 100pF, f =100kHz Total Harmonic Distortion f =1kHz, Av =20dB, RL =2k, Vo =2Vpp, CL = 100pF Input Offset Current Drift 25C Tmax Tmin Tamb Tmax Input Offset Voltage Drift Tmin Tamb Tmax
0.5 0.3 5
0.5 0.3 5
V/s s % M MHz % 300 600 30 pA/C V/C
1.5
4 75
1.5
4 75
0.5
1 0.015 10 20 3 100 200 15
0.5
1 0.015 10 20 6
May be improved up to 10V/s in inverting amplifier configuration.
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UA748
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UA748
SINGLE POLE COMPENSATION
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UA748
PACKAGE MECHANICAL DATA 8 PINS - PLASTIC DIP
Millimeters Dim. Min. A a1 B b b1 D E e e3 e4 F i L Z 0.51 1.15 0.356 0.204 7.95 2.54 7.62 7.62 6.6 5.08 3.81 1.52 Typ. 3.32 1.65 0.55 0.304 10.92 9.75 0.020 0.045 0.014 0.008 0.313 Max. Min.
Inches Typ. 0.131 0.065 0.022 0.012 0.430 0.384 0.100 0.300 0.300 0260 0.200 0.150 0.060 Max.
3.18
0.125
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UA748
PACKAGE MECHANICAL DATA 8 PINS - PLASTIC MICROPACKAGE (SO)
L
C a3 b1
c1
a2
s e3 E
D M
8
5
F
1
4
Millimeters Dim. Min. A a1 a2 a3 b b1 C c1 D E e e3 F L M S 0.1 0.65 0.35 0.19 0.25 4.8 5.8 1.27 3.81 3.8 0.4 4.0 1.27 0.6 8 (max.) 0.150 0.016 Typ. Max. 1.75 0.25 1.65 0.85 0.48 0.25 0.5 45 (typ.) 5.0 6.2 0.189 0.228 Min. 0.004 0.026 0.014 0.007 0.010
a1
b
A
Inches Typ. Max. 0.069 0.010 0.065 0.033 0.019 0.010 0.020 0.197 0.244 0.050 0.150 0.157 0.050 0.024
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. (c) The ST logo is a registered trademark of STMicroelectronics (c) 2001 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States (c) http://www.st.com
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