Datasheet

OPA548
3
SBOS070B
www.ti.com
ELECTRICAL CHARACTERISTICS
At T
CASE
= +25°C, V
S
= ±30V and E/S pin open, unless otherwise noted.
OPA548T, F
PARAMETER CONDITION MIN TYP MAX UNITS
OFFSET VOLTAGE
Input Offset Voltage V
CM
= 0, I
O
= 0 ±2 ±10 mV
vs Temperature T
A
= –40°C to +85°C ±30 µV/°C
vs Power Supply V
S
= ±4V to ±30V 30 100 µV/V
INPUT BIAS CURRENT
(1)
Input Bias Current
(2)
V
CM
= 0V –100 –500 nA
vs Temperature T
A
= –40°C to +85°C ±0.5 nA/°C
Input Offset Current V
CM
= 0V ±5 ±50 nA
NOISE
Input Voltage Noise Density, f = 1kHz 90 nV/√Hz
Current Noise Density, f = 1kHz 200 fA/√Hz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range: Positive Linear Operation (V+) – 3 (V+) – 2.3 V
Negative Linear Operation (V–) – 0.1 (V–) – 0.2 V
Common-Mode Rejection V
CM
= (V–) –0.1V to (V+) –3V 80 95 dB
INPUT IMPEDANCE
Differential 10
7
|| 6 Ω || pF
Common-Mode 10
9
|| 4 Ω || pF
OPEN-LOOP GAIN
Open-Loop Voltage Gain V
O
= ±25V, R
L
= 1kΩ 90 98 dB
V
O
= ±25V, R
L
= 8Ω 90 dB
FREQUENCY RESPONSE
Gain-Bandwidth Product R
L
= 8Ω 1 MHz
Slew Rate G = 1, 50Vp-p, R
L
= 8Ω 10 V/µs
Full-Power Bandwidth See Typical Characteristics kHz
Settling Time: ±0.1% G = –10, 50V Step 15 µs
Total Harmonic Distortion + Noise, f = 1kHz R
L
= 8Ω, G = +3, Power = 10W 0.02
(3)
%
OUTPUT
Voltage Output, Positive I
O
= 3A (V+) – 4.1 (V+) – 3.7 V
Negative I
O
= –3A (V–) + 3.7 (V–) + 3.3 V
Positive I
O
= 0.6A (V+) – 2.4 (V+) – 2.1 V
Negative I
O
= –0.6A (V–) + 1.3 (V–) + 1.0 V
Maximum Continuous Current Output: dc ±3A
ac 3 Arms
Leakage Current, Output Disabled, dc See Typical Characteristics
Output Current Limit
Current Limit Range 0 to ±5A
Current Limit Equation I
LIM
= (15000)(4.75)/(13750Ω + R
CL
)A
Current Limit Tolerance
(1)
R
CL
= 14.8kΩ (I
LIM
= ±2.5A), ±100 ±250 mA
R
L
= 8Ω
Capacitive Load Drive See Typical Characteristics
(4)
OUTPUT ENABLE /STATUS (E/S) PIN
Shutdown Input Mode
V
E/S
HIGH (output enabled) E/S Pin Open or Forced High (V–) + 2.4 V
V
E/S
LOW (output disabled) E/S Pin Forced Low (V–) + 0.8 V
I
E/S
HIGH (output enabled) E/S Pin High –65 µA
I
E/S
LOW (output disabled) E/S Pin Low –70 µA
Output Disable Time 1 µs
Output Enable Time 3 µs
Thermal Shutdown Status Output
Normal Operation Sourcing 20µA(V–) + 2.4 (V–) + 3.5 V
Thermally Shutdown Sinking 5µA, T
J
> 160°C(V–) + 0.35 (V–) + 0.8 V
Junction Temperature, Shutdown +160 °C
Reset from Shutdown +140 °C
POWER SUPPLY
Specified Voltage ±30 V
Operating Voltage Range ±4 ±30 V
Quiescent Current I
LIM
Connected to V–, I
O
= 0 ±17 ±20 mA
Quiescent Current, Shutdown Mode I
LIM
Connected to V–, I
O
= 0 ±6mA
TEMPERATURE RANGE
Specified Range –40 +85 °C
Operating Range –40 +125 °C
Storage Range –55 +125 °C
Thermal Resistance, θ
JC
7-Lead DDPAK, 7-Lead TO-220 f > 50Hz 2 °C/W
7-Lead DDPAK, 7-Lead TO-220 dc 2.5 °C/W
Thermal Resistance, θ
JA
7-Lead DDPAK, 7-Lead TO-220 No Heat Sink 65 °C/W
NOTES: (1) High-speed test at T
J
= +25°C. (2) Positive conventional current flows into the input terminals. (3) See “Total Harmonic Distortion+Noise vs Frequency” in
the Typical Characteristics section for additional power levels. (4) See “Small-Signal Overshoot vs Load Capacitance” in the Typical Characteristics section.