Texas Instruments LPV521 Handleiding

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LPV521 NanoPower, 1.8V, RRIO, CMOS Input, Operational Amplifier

1 Features

•For V

S

= 5V, typical unless otherwise noted:

–Supply current at V

CM

= 0.3V: 400nA (max)

–Operating voltage range: 1.6V to 5.5V

–Low TCV

OS

: 3.5µV/°C (max)

–V

OS

: 1mV (max)

–Input bias current: 40fA

–PSRR: 109dB

–CMRR: 102dB

–Open-loop gain: 132dB

–Gain bandwidth product: 6.2kHz

–Slew rate: 2.4V/ms

–Input voltage noise at f = 100Hz: 255nV/√Hz

–Temperature range: −40°C to +125°C

2 Applications

•Wireless environmental sensors

•Grid asset monitoring

•Electricity meter

•Smoke and heat detector

•Gas detector

•Portable electronics

•Thermostat

•Field transmitter and sensor

3 Description

The LPV521 is a single, nanopower, 552nW amplifier

designed for ultra-long-life battery applications. The

operating voltage range of 1.6V to 5.5V coupled with

typically 351nA of supply current make this device

an excellent choice for RFID readers and remote-

sensor nanopower applications. The device has an

input common-mode voltage 0.1V over the rails,

specified TCV

OS

, and voltage-swing-to-the-rail output

performance. The LPV521 has a carefully designed

CMOS input stage that outperforms competitors with

typically 40fA I

BIAS

currents. This low input current

significantly reduces I

BIAS

and I

OS

errors introduced in

megohm resistance, high-impedance photodiode and

charge sense applications. The LPV521 is a member

of the PowerWise

®

family, and has an exceptional

power-to-performance ratio.

The wide input common-mode voltage range,

specified 1mV V

OS

and 3.5µV/°C TCV

OS

enables

accurate and stable measurement for both high-side

and low-side current sensing.

EMI protection is designed into the device to reduce

sensitivity to unwanted RF signals from cell phones or

other RFID readers.

The LPV521 is offered in 5-pin SC70 and 8-pin PDIP

packages.

Package Information

PART NUMBERPACKAGE

(1)

PACKAGE SIZE

(2)

LPV521

DCK (SC70, 5)2mm × 2.1mm

P (PDIP, 8)9.81mm × 9.43mm

(1)For more information, see Section 10.

(2)The package size (length × width) is a nominal value and

includes pins, where applicable.

SUPPLYVOLTAGE (V)

SUPPLYCURRENT(nA)

800

700

600

500

400

300

200

100

0

123456

125°C

85°C

25°C

-40°C

V

CM

= V

S

± 0.3 V

Nanopower Supply Current

LPV521

SNOSB14E – AUGUST 2009 – REVISED JULY 2024

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.

Product specificaties