OPAX607 datasheet(1/52 Pages) TI

Part #	OPAX607

Description	OPAx863 Low-Power, 110-MHz, Rail-to-Rail Input/Output Voltage-Feedback Op Amps

PDF	52 Pages

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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OPAx863 Low-Power, 110-MHz, Rail-to-Rail Input/Output Voltage-Feedback Op Amps

1 Features

• Wide-bandwidth

– Unity-gain bandwidth: 110-MHz (AV= 1 V/V)

– Gain-bandwidth product: 50-MHz

• Low power

– Quiescent current: 700-µA/ch (typical)

– Power down mode: 1.5-µA (maximum, VS= 3 V)

– Supply voltage: 2.7-V to 12.6-V

• Input voltage noise: 5.9-nV/√Hz

• Slew rate: 105-V/µs

• Rail-to-rail input and output

• HD2/HD3: –129 dBc/–138 dBc at 20 kHz (2-VPP)

• Operating temperature range:

–40°C to +125°C

• Additional features:

– Overload power limit

– Output short-circuit protection

• High-precision version: OPAx863A

2 Applications

• Low-power SAR and ΔΣ ADC driver

• ADC reference buffer

• Low-side current sensing

• Photodiode TIA interface

• Inductive sensing

• Ultrasonic flow meter

• Multifunction printer

• MDAC output buffer

• Gain and active filter stages

+

±

RF

VOUT

VCC

OPA x863

GND

To

ADC

±VBIAS

VEE

V

OUT = ID.RF

ID

CF

LED

Driver

LED

Photo-

Diode

+

±

+

±

RG

RF

RSH

VREF

GND

To MCU/

ADC

To compar ato r

for faul t detection

Switchi ng

Circuit

ISH

VOUT

GND

VCC

OPA x863

Transimpedance Amplifier Circuit

Low-side Current Sensing

Application Circuits Using OPAx863

3 Description

The OPAx863 devices are low-power, unity-gain

stable, rail-to-rail input and output, voltage-feedback

operational amplifiers designed to operate over a

power-supply range of 2.7 V to 12.6 V. Consuming

only 700 µA per channel, the OPAx863 offers a gain-

bandwidth product of 50 MHz, slew rate of 105 V/µs

with a voltage noise density of 5.9 nV/√Hz.

The rail-to-rail input stage with 2.7-V supply operation

is useful in portable, battery-powered applications.

The rail-to-rail input stage is well-matched for gain-

bandwidth product and noise across the full input

common

‑mode voltage range, enabling excellent

performance with wide-input dynamic range. The

OPAx863 feature a power-down (PD) mode with a

PD quiescent current (IQ) of 1.5-µA (maximum) and

a turn-on or turn-off time within 6.5-µs using a 3-V

supply.

The OPAx863 includes overload power limiting to limit

the increase in IQ with saturated outputs, thereby

preventing excessive power dissipation in power-

conscious, battery-operated systems. The output

stage is short-circuit protected, making these devices

conducive to ruggedized environments.

Device Information(1)(2)

PART NUMBER

CHANNEL COUNT

PACKAGE

OPA863

Single

DBV (SOT-23, 5)

DBV (SOT-23, 6)

OPA2863

Dual

DGK (VSSOP, 8)

RUN (WQFN, 10)

D (SOIC, 8)

OPA4863

Quad

PW (TSSOP, 14)

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

(2)

For related products, see Device Comparison

Frequency (Hz)

-160

-140

-120

-100

-80

-60

-40

-20

1k

10k

100k

1M

10M

HD2, VOUT = 2 VPP

HD3, VOUT = 2 VPP

HD2, VOUT = 4 VPP

HD3, VOUT = 4 VPP

Distortion Performance in G = 1 V/V

OPA863, OPA2863, OPA4863

SBOS982J – JUNE 2020 – REVISED JUNE 2023

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.

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