The OPAx191 family (OPA191, OPA2191, and OPA4191) is a new generation of 36-V, e-trim™ operational amplifiers.
These devices offer outstanding dc precision and ac performance, including rail-to-rail input/output, low offset voltage (±5 µV, typ), low offset drift (±0.2 µV/°C, typ), and 2-MHz bandwidth.
Unique features, such as differential input-voltage range to the supply rail, high output current (±65 mA), high capacitive load drive of up to 1 nF, and high slew rate (5 V/µs), make the OPAx191 a robust, high-performance operational amplifier for high-voltage industrial applications.
The OPAx191 family of op amps is available in standard packages and is specified from –40°C to +125°C.
PART NUMBER | PACKAGE(1) | BODY SIZE (NOM) |
---|---|---|
OPA191 | SOIC (8) | 4.90 mm × 3.90 mm |
SOT (5) | 2.90 mm × 1.60 mm | |
VSSOP (8) | 3.00 mm × 3.00 mm | |
OPA2191 | SOIC (8) | 4.90 mm × 3.90 mm |
VSSOP (8) | 3.00 mm × 3.00 mm | |
OPA4191 | SOIC (14) | 8.65 mm x 3.90 mm |
TSSOP (14) | 5.00 mm x 4.40 mm | |
WQFN (16) | 4.00 mm x 4.00 mm |
Changes from Revision C (October 2019) to Revision D (August 2021)
Changes from Revision B (July 2019) to Revision C (October 2019)
Changes from Revision A (April 2016) to Revision B (July 2019)
PIN | I/O | DESCRIPTION | ||
---|---|---|---|---|
NAME | OPA191 | |||
D
(SOIC), DGK (VSSOP) |
DBV (SOT) | |||
+IN | 3 | 3 | I | Noninverting input |
–IN | 2 | 4 | I | Inverting input |
NC | 1, 5, 8 | — | — | No internal connection (can be left floating) |
OUT | 6 | 1 | O | Output |
V+ | 7 | 5 | — | Positive (highest) power supply |
V– | 4 | 2 | — | Negative (lowest) power supply |
PIN | I/O | DESCRIPTION | |||
---|---|---|---|---|---|
NAME | OPA2191 | OPA4191 | |||
D
(SOIC), DGK (VSSOP) |
D
(SOIC), PW (TSSOP) |
RUM (QFN) | |||
+IN A | 3 | 3 | 2 | I | Noninverting input, channel A |
+IN B | 5 | 5 | 4 | I | Noninverting input, channel B |
+IN C | — | 10 | 9 | I | Noninverting input, channel C |
+IN D | — | 12 | 11 | I | Noninverting input, channel D |
–IN A | 2 | 2 | 1 | I | Inverting input, channel A |
–IN B | 6 | 6 | 5 | I | Inverting input, channel B |
–IN C | — | 9 | 8 | I | Inverting input,,channel C |
–IN D | — | 13 | 12 | I | Inverting input, channel D |
OUT A | 1 | 1 | 15 | O | Output, channel A |
OUT B | 7 | 7 | 6 | O | Output, channel B |
OUT C | — | 8 | 7 | O | Output, channel C |
OUT D | — | 14 | 14 | O | Output, channel D |
V+ | 8 | 4 | 3 | — | Positive (highest) power supply |
V– | 4 | 11 | 10 | — | Negative (lowest) power supply |