The OPA454 device is a low-cost operational amplifier with high voltage (100 V) and relatively high current drive (50 mA). It is unity-gain stable and has a gain-bandwidth product of 2.5 MHz.
The OPA454 is internally protected against overtemperature conditions and current overloads. It is fully specified to perform over a wide power-supply range of ±5 V to ±50 V or on a single supply of 10 V to 100 V. The status flag is an open-drain output that allows it to be easily referenced to standard low-voltage logic circuitry. This high-voltage operational amplifier provides excellent accuracy, wide output swing, and is free from phase inversion problems that are often found in similar amplifiers.
The output can be independently disabled using the Enable or Disable Pin that has its own common return pin to allow easy interface to low-voltage logic circuitry. This disable is accomplished without disturbing the input signal path, not only saving power but also protecting the load.
Featured in a small exposed metal pad package, the OPA454 is easy to heatsink over the extended industrial temperature range, –40°C to +85°C.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
OPA454 | SO PowerPAD™ (8) | 4.89 mm × 3.90 mm |
Changes from A Revision (December 2008) to B Revision
Changes from * Revision (December 2007) to A Revision
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
E/D (Enable/Disable) | 8 | I | Enable/Disable |
E/D Com | 1 | I | Enable/Disable common |
–IN | 2 | I | Inverting input |
+IN | 3 | I | Noninverting input |
OUT | 6 | O | Output |
Status Flag | 5 | O | The Status Flag is an open-drain active-low output referenced to E/D Com. This pin goes active for either an overcurrent or overtemperature condition. |
V– | 4 | — | Negative (lowest) power supply |
V+ | 7 | — | Positive (highest) power supply |
MIN | MAX | UNIT | ||
---|---|---|---|---|
Voltage | Supply voltage, VS = (V+) – (V–) | 120 | V | |
Signal input pin(2) | (V–) – 0.3 | (V+) + 0.3 | V | |
E/D to E/D Com | 5.5 | V | ||
Current | Signal input pin(2) | ±10 | mA | |
Output short circuit(3) | Continuous | |||
Temperature | Operating, TA | –55 | 125 | °C |
Junction, TJ | 150 | °C | ||
Storage, Tstg | –55 | 125 | °C |
VALUE | UNIT | |||
---|---|---|---|---|
V(ESD) | Electrostatic discharge | Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) | ±4000 | V |
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) | ±500 | |||
Machine model (MM) | ±150 |
MIN | NOM | MAX | UNIT | ||
---|---|---|---|---|---|
Supply voltage, VS = (V+) – (V–) | 10 (±5) | 100 (±50) | V | ||
TA | Operating temperature | –55 | 125 | °C |
THERMAL METRIC(1) | OPA454 | UNIT | |
---|---|---|---|
DDA (SO) | |||
8 PINS | |||
RθJA | Junction-to-ambient thermal resistance | 40.6 | °C/W |
RθJC(top) | Junction-to-case (top) thermal resistance | 46 | °C/W |
RθJB | Junction-to-board thermal resistance | 20.7 | °C/W |
ψJT | Junction-to-top characterization parameter | 5.6 | °C/W |
ψJB | Junction-to-board characterization parameter | 20.6 | °C/W |
RθJC(bot) | Junction-to-case (bottom) thermal resistance | 2.5 | °C/W |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | ||
---|---|---|---|---|---|---|---|
OFFSET VOLTAGE | |||||||
VOS | Input offset voltage | IO = 0 mA | ±0.2 | ±4 | mV | ||
dVOS/dT | Input offset voltage vs temperature | At TA = –40°C to +85°C | ±1.6 | ±10 | µV/°C | ||
PSRR | Input offset voltage vs power supply | VS = ±4 V to ±60 V, VCM = 0 V | 25 | 100 | µV/V | ||
INPUT BIAS CURRENT | |||||||
IB | Input bias current | At TP = 25°C | ±1.4 | ±100 | pA | ||
At TA = –40°C to +85°C | See Typical Characteristics | ||||||
IOS | Input offset current | ±0.2 | ±100 | pA | |||
NOISE | |||||||
en | Input voltage noise density | f = 10 Hz | 300 | nV/√Hz | |||
f = 10 kHz | 35 | nV/√Hz | |||||
Input voltage noise | f = 0.01 Hz to 10 Hz | 15 | µVPP | ||||
in | Current noise density | f = 1 kHz | 40 | fA/√Hz | |||
INPUT VOLTAGE RANGE | |||||||
VCM | Common-mode voltage range | Linear operation | (V–) + 2.5 | See Note (12) | (V+) – 2.5 | V | |
CMRR | Common-mode rejection | VS = ±50 V, –25 V ≤ VCM ≤ 25 V | 100 | 146 | dB | ||
VS = ±50 V, –45 V ≤ VCM ≤ 45 V | 100 | 147 | dB | ||||
At TA = –40°C to +85°C, VS = ±50 V, –25 V ≤ VCM ≤ 25 V |
80 | 88 | dB | ||||
At TA = –40°C to +85°C, VS = ±50 V, –45 V ≤ VCM ≤ 45 V |
72 | 82 | dB | ||||
INPUT IMPEDANCE | |||||||
Differential | 1013 || 10 | Ω || pF | |||||
Common-mode | 1013 || 9 | Ω || pF | |||||
OPEN-LOOP GAIN | |||||||
AOL | Open-loop voltage gain(2) |
(V–) + 1 V < VO < (V+) – 1 V, RL = 49 kΩ, IO = ±1 mA |
100 | 130 | dB | ||
At TA = –40°C to +85°C | 112 | dB | |||||
(V–) + 1 V < VO < (V+) – 2 V, RL = 4.8 kΩ, IO = ±10 mA |
100 | 115 | dB | ||||
At TA = –40°C to +85°C | 106 | dB | |||||
(V–) + 2 V < VO < (V+) – 3 V, RL = 1880 Ω, IO = ±25 mA |
80 | 102 | dB | ||||
At TA = –40°C to +85°C | 84 | dB | |||||
FREQUENCY RESPONSE(3) | |||||||
GBW | Gain-bandwidth product | Small-signal | 2.5 | MHz | |||
SR | Slew rate | G = ±1, VO = 80-V step, RL = 3.27 kΩ |
13 | V/µs | |||
Full-power bandwidth(4) | 35 | kHz | |||||
tS | Settling time(5) | To ±0.1%, G = ±1, VO = 20-V step | 3 | µs | |||
To ±0.01%, G = ±5 or ±10, VO = 80-V step |
10 | µs | |||||
THD+N | Total harmonic distortion + noise(6) | VS = +40.6 V/–39.6 V, G = ±1, f = 1 kHz, VO = 77.2 VPP |
0.0008% | ||||
OUTPUT | |||||||
VO | Voltage output swing from rail(7) | RL = 49 kΩ, AOL ≥ 100 dB, IO = 1 mA |
(V–) + 1 | (V+) – 1 | V | ||
RL = 4.8 kΩ, AOL ≥ 100 dB, IO = 10 mA |
(V–) + 1 | (V+) – 2 | V | ||||
RL = 1880 Ω, AOL ≥ 80 dB, IO = 26 mA |
(V–) + 2 | (V+) – 3 | V | ||||
Continuous current output, DC | Depends on circuit conditions | See Figure 5 | |||||
IO | Maximum peak current output, current limit(2) | +120/–150 | mA | ||||
At TA = –40°C to +85°C | +140/–170 | mA | |||||
CLOAD | Capacitive load drive(3) | 200 | pF | ||||
RO | Open-loop output impedance | See Figure 4 | Ω | ||||
Output disabled | Output capacitance | 18 | pF | ||||
Feedthrough capacitance(8) | 150 | fF | |||||
STATUS FLAG PIN (Referenced to E/D Com) | |||||||
Status Flag delay | Enable → Disable | 6 | µs | ||||
Disable → Enable | 4 | µs | |||||
Overcurrent delay(10) | 15 | µs | |||||
Overcurrent recovery delay(10) | 10 | µs | |||||
TJ | Junction temperature | Alarm (Status Flag high) | 150 | °C | |||
Return to normal operation (Status Flag low) |
130 | °C | |||||
Output voltage(3) | Normal operation | E/D Com + 2 | V | ||||
RL = 100 Ω during thermal overdrive, alarm | (V+) – 2.5 | V | |||||
E/D (ENABLE/DISABLE) PIN | |||||||
E/D pin, referenced to E/D Com pin(11)(9) | |||||||
VSD | High (output enabled) | Pin open or forced high | E/D Com + 2.5 | E/D Com + 5 | V | ||
Low (output disabled) | Pin forced low | E/D Com | E/D Com + 0.65 | V | |||
Output disable time | 4 | µs | |||||
Output enable time | 3 | µs | |||||
E/D COM PIN | |||||||
Voltage range | (V–) | (V+) – 5 | V | ||||
POWER SUPPLY | |||||||
VS | Specified range | ±50 | V | ||||
Operating voltage range | ±5 | ±50 | V | ||||
IQ | Quiescent current | IO = 0 mA | 3.2 | 4 | mA | ||
Quiescent current in Shutdown mode | IO = 0 mA, VE/D = 0.65 V | 150 | 210 | µA | |||
TEMPERATURE RANGE | |||||||
TA | Specified range | –40 | 85 | °C | |||
Operating range | –55 | 125 | °C |
G = +2 | RF = 10 kΩ | VCM = 0 V |
See the Settling Time section. The grid for voltage at V1 and V2 is scaled 20 mV or 0.1% per division. | ||
20-V Step | Gain = 1 | RF = 10 kΩ |
The OPA454 was connected to sufficient heatsinking to prevent thermal shutdown. | ||
TP = 125°C |
The OPA454 was connected to sufficient heatsinking to prevent thermal shutdown. | ||
TP = –55°C |
See Figure 72 in the System Examples section. |
G = +1 | VCM = 0 V |
See the Settling Time section. The grid for voltage at V1 and V2 is scaled 20 mV or 0.1% per division. | ||
20-V Step | Gain = 1 | RF = 10 kΩ |
The OPA454 was connected to sufficient heatsinking to prevent thermal shutdown. | ||
TP = 25°C |