OPA627 Datasheet, PDF (1/37 Pages) Burr-Brown (TI) – Precision High-Speed Difet OPERATIONAL AMPLIFIERS

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OPA627, OPA637
SBOS165A – SEPTEMBER 2000 – REVISED OCTOBER 2015
OPA627 and OPA637 Precision High-Speed Difet^® Operational Amplifiers
1 Features
•1 Very Low Noise: 4.5 nV/√Hz at 10 kHz
• Fast Settling Time:
– OPA627—550 ns to 0.01%
– OPA637—450 ns to 0.01%
• Low V_OS: 100-µV maximum
• Low Drift: 0.8-µV/°C maximum
• Low I_B: 5-pA maximum
• OPA627: Unity-Gain Stable
• OPA637: Stable in Gain ≥ 5
2 Applications
• Precision Instrumentation
• Fast Data Acquisition
• DAC Output Amplifier
• Optoelectronics
• Sonar, Ultrasound
• High-Impedance Sensor Amps
• High-Performance Audio Circuitry
• Active Filters
3 Description
The OPA6x7 Difet^® operational amplifiers provide a
new level of performance in a precision FET
operational amplifier. When compared to the popular
OPA111 operational amplifier, the OPA6x7 has lower
noise, lower offset voltage, and higher speed. The
OPA6x7 is useful in a broad range of precision and
high speed analog circuitry.
The OPA6x7 is fabricated on a high-speed,
dielectrically-isolated complementary NPN/PNP
process. It operates over a wide range of power
supply voltage of ±4.5 V to ±18 V. Laser-trimmed
Difet input circuitry provides high accuracy and low-
noise performance comparable with the best bipolar-
input operational amplifiers.
High frequency complementary transistors allow
increased circuit bandwidth, attaining dynamic
performance not possible with previous precision FET
operational amplifiers. The OPA627 is unity-gain
stable. The OPA637 is stable in gains equal to or
greater than five.
Difet fabrication achieves extremely low input bias
currents without compromising input voltage noise
performance. Low input bias current is maintained
over a wide input common-mode voltage range with
unique cascode circuitry.
The OPA6x7 is available in plastic PDIP, SOIC, and
metal TO-99 packages. Industrial and military
temperature range models are available.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SOIC (8)
3.91 mm × 4.9 mm
OPA627
OPA637
PDIP (8)
TO-99 (8)
6.35 mm × 9.81 mm
8.95 mm (metal can
diameter)
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
OPA627 Simplified Schematic
7
Trim
Trim
+V_S
1
5
Output
6
+In
–In
3
2
–V_S
4
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.