Document
OMA541SK OMA541SKC OMA541SD OMA541SDZ
HIGH POWER, HIGH CURRENT OPERATIONAL AMPLIFIER
8-Pin, TO-3 And DIP, 10 Amp Monolithic Power Operational Amplifier
FEATURES
• Available In Isolated Standard TO-3, “Copper Slug” TO-3 And Power DIP Packages • 10 Amp Peak Output Current • Power Supplies to ±40V • Programmable Current Limit • FET Input • Available Screened to MIL-STD-883
DESCRIPTION
The OMA541 is a power operational amplifier capable of operation from power supplies up to ±40V and continuous output current up to 5A. Internal current limit circuitry can be user-programmed with a single external resistor, protecting the amplifier and load from fault conditions. The OMA541 pinout is compatible with popular power operational amplifiers such as the OPA511, OPA512 and OPA3573. This device is ideally suited for Military motor driver, servo amplifier, synchro exertation as well as other power drive circuitry. The OMA541SKC incorporates a copper slug to the header for improved thermal performance.
ABSOLUTE MAXIMUM RATINGS @ 25°C
Supply Voltage, +VS To -VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80V Output Current, Continuous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A Power Dissipation, Internal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125W Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55°C to 125°C Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55°C to 150°C Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C Lead Temperature (10 Sec. Soldering) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C
3.4
SCHEMATIC
+VS -In +In
PIN CONNECTION
NC +VS 3 2 1 + Current Sense
8
Current Sense RCL Output Drive (ext.) Output
7
6
5
•1
-VS
2
3
4
Pin 1: Pin 2: Pin 3: Pin 4: Pin 5: Pin 6: Pin 7: Pin 8:
-VS NC OUTPUT CS +VS NC +IN -IN
-In
4
+In
5 6 -VS
8 7 NC
RCL Output Output Drive
Pin 1 Designation
D-8 Top View
4 11 R1 Supersedes 2 05 R0
TO-3 Top View
3.4 - 41
OMA541SK OMA541SKC OMA541SD OMA541SDZ
ELECTRICAL CHARACTERISTICS (TC = 25°C; VS = ±34 VDC unless otherwise noted.)
Parameter Input Offset Voltage VOS vs Temperature vs Temperature vs Supply Voltage vs Power Input Bias Current IB Input Offset Current IOS Input Characteristics Common-Mode Voltage Range -55°C to +85°C +85°C to +125°C Common-Mode Rejection VSœ - 6V) VCM = ±(œ VCM = ±22V Input Capacitance* Input Capacitance, DC* Gain Characteristics Open Loop Gain at 10Hz Gain Bandwidth Product* Output Voltage Swing IO = 5A, Continuous IO = 2A IO = 0.5A Current Peak AC Performance Slew Rate Power Bandwidth* Setting Time to 0.1%* Capacitive Load* RL = 8 , VO = 20Vrms 2V Step Specified Temperature Range, G =1 Specified Temperature Range, G >10 Phase Margin* Power Supply Power Supply Voltage, ±VS Current Quiescent Specified Temperature Range Thermal Resistance qJC (Junction-to-Case) AC Output f 60 Hz OMA541SK OMA541SKC OMA541SD DC Output OMA541SK 1.60 1.20 1.00 30 1.9 1.5 1.15 °C/W °C/W °C/W °C/W 1.25 1.00 .85 1.5 1.2 .95 °C/W °C/W °C/W ±10 ±35 20 25 ±40 25 35 V mA mA Specified Temperature Range, RL = 8 40 3.3 SOA Degrees 6 10 55 2 V/µS KHz µS A ±(œ VSœ - 5.5) ±(œ VSœ - 4.5) ±(œ VSœ - 4) 9 ±(œ VSœ - 4.5) ±(œ VSœ - 3.6) ±(œ VSœ - 3.2) 10 V V V A RL = 10k 90 97 1.6 dB MHz 95 5 1 ±(œ VSœ - 6) ±(œ VSœ - 6.5) ±(œ VSœ - 3) ±(œ VSœ - 3.2) 113 V V dB dB pF T Specified Temperature Range 4 ±1 ±5 50 ±30 ±20 pA pA nA -25°C to +125°C -55°C to -25°C VS = ±10V to ± VMAX ±.01 ±15 ±20 ±2.5 ±20 ±2 ±30 ±40 ±10 ±60 mV µV/°C µV/°C µV/V µV/W Conditions Min. Typ. Max. Units
3.4
qJA (Junction-to-Ambient)
OMA541SKC OMA541SD
Note: *Guaranteed - not tested 100%.
3.4 - 42
OMA541SK OMA541SKC OMA541SD OMA541SDZ
TYPICAL PERFORMANCE CURVES
TA = +25°C, VS = ±VDC unless otherwise noted
Input Bias Current VS Temperature
100 Input Bias Current, (nA) 10 1 0.1 0.01 110 100 90 80 70 60 50 40 30 20 10 0 -10 1 10
Open-Loop Gain and Phase VS Frequency
Voltage Gian, (dB)
Phase
Gain
ZL = 3.3nF
ZL = 3.3nF 100 1k 10k 100k 1M 10M
0.001 -25
0
25
50
75
100
125
Junction Temperature, (C°)
Frequency, (Hz)
Normalized Quiescent Current VS Total Power Supply Voltage
1.3 1.2 Normalized IQ 1.1 TC = -25°C 1.0 0.9 0.8 0.7 0.6 20 30 40 TC = 125°C 50 60 70 80 90 TC = 25°C ± VS − VOUT , (V) 6 5 4
Output Voltage Swing VS Output Current
(+VS) - VO -VS - VO
3 2 1 0
1
2
3
4
5 IOUT, (A)
6
7
8
9
10
+VS + -VS , (V)
Voltage Noise Density VS Frequency
1k 10
Total Harmonic Distortion VS Frequency
Voltage Noise Density,
THD + Noise, (%)
1.0 PO = 100mW 0.1 PO = 5W PO = 50W
100
3.4
0.01
10 1 10 100 1k 10k 100k 0.001 10 100 1k Frequency, (Hz) 10k 100k Frequency, (Hz)
3.4 - 43
OMA541SK OMA541SKC OMA541SD OMA541SDZ
Typical Common-Mode Rejection VS Frequency (Case Dep.