LT1970ACFE#PBF datasheet, PDF - EEWORLD Datasheet

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LT1970ACFE#PBF: DescriptionIC OPAMP GP 3.6MHZ 20TSSOP; CategoryAnalog mixed-signal IC Amplifier circuit; File Size362KB，24 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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LT1970ACFE#PBF Overview

IC OPAMP GP 3.6MHZ 20TSSOP

LT1970ACFE#PBF Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	conform to
Maker	Linear ( ADI )
Parts packaging code	TSSOP
package instruction	HTSSOP,
Contacts	20
Manufacturer packaging code	FE
Reach Compliance Code	compliant
ECCN code	EAR99
Amplifier type	OPERATIONAL AMPLIFIER
Nominal Common Mode Rejection Ratio	105 dB
Maximum input offset voltage	1000 µV
JESD-30 code	R-PDSO-G20
JESD-609 code	e3
length	6.5 mm
Humidity sensitivity level	1
Negative supply voltage upper limit	-18 V
Nominal Negative Supply Voltage (Vsup)	-5 V
Number of functions	1
Number of terminals	20
Maximum operating temperature	70 °C
Minimum operating temperature
Package body material	PLASTIC/EPOXY
encapsulated code	HTSSOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Maximum seat height	1.2 mm
Nominal slew rate	1.6 V/us
Supply voltage upper limit	18 V
Nominal supply voltage (Vsup)	5 V
surface mount	YES
Temperature level	COMMERCIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
Nominal Uniform Gain Bandwidth	3600 kHz
width	4.4 mm

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LT1970A

500mA Power Op Amp with

Adjustable Precision Current Limit

FeaTures

DescripTion

The

1970A

is a ± 500mA power op amp with precise

externally controlled current limiting. Separate control

voltages program the sourcing and sinking current limit

sense thresholds with 1% accuracy. Output current may

be boosted by adding external power transistors.

The circuit operates with single or split power supplies

from 5V to 36V total supply voltage. In normal opera-

tion, the input stage supplies and the output stage sup-

plies are connected (V

to V

and V

to V

–

). To reduce

power dissipation it is possible to power the output stage

, V

–

) from independent, lower voltage rails. The amplifier

is unity-gain stable with a 3.6MHz gain-bandwidth product

and slews at 1.6V/µs. The LT1970A can drive capacitive

and inductive loads directly.

Open-collector status flags signal current limit circuit

activation, as well as thermal shutdown of the amplifier.

An enable logic input puts the amplifier into a low power,

high impedance output state when pulled low. Thermal

shutdown and a ±800mA fixed current limit protect the

chip under fault conditions.

The LT1970A is packaged in a 20-lead TSSOP package with

a thermally conductive copper bottom plate to facilitate

heat sinking.

± 500mA Minimum Output Current

Independent Adjustment of Source and

Sink Current Limits

1% Current Limit Accuracy

Improved Reactive Load Driving Stability

Operates with Single or Split Supplies

Shutdown/Enable Control Input

Open-Collector Status Flags:

Sink Current Limit

Source Current Limit

Thermal Shutdown

Fail-Safe Current Limit and Thermal Shutdown

1.6V/µs Slew Rate

3.6MHz Gain-Bandwidth Product

Specified Temperature Range: –40°C to 85°C

Available in a 20-Lead TSSOP Package

applicaTions

Automatic Test Equipment

Laboratory Power Supplies

Motor Drivers

Thermoelectric Cooler Driver

LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

Typical applicaTion

Device Power Supply (DPS) with ±500mA Adjustable Current Limit

LIMIT

0V TO 5V

20V

CURRENT LIMIT = 500mA

OUT(MAX)

= ±

LIMIT

10 • R

OUT

1/4W

TRACE R TRACE L

100m

200nH

4.7µF

SENSE

ESR

0.1

1970A TA01

SRC

+IN

SNK

ISNK

LOAD

, R

LOAD

= 100

ISRC

TSD

LT1970A

OUT

SENSE

–

–IN

COMMON

2V/DIV

LOAD

= 10

, 5V/DIV

LOAD

–5V

10k

100pF

100µs/DIV

1970A TA01b

1970afc

For more information

www.linear.com/LT1970A

LT1970ACFE#PBF Related Products

	LT1970ACFE#PBF	LT1970AIFE#PBF	LT1970AIFE#TRPBF	LT1970ACFE#TRPBF
Description	IC OPAMP GP 3.6MHZ 20TSSOP	IC OPAMP GP 3.6MHZ 20TSSOP	IC OPAMP GP 3.6MHZ 20TSSOP	IC OPAMP GP 3.6MHZ 20TSSOP
Brand Name	Linear Technology	Linear Technology	Linear Technology	Linear Technology
Is it Rohs certified?	conform to	conform to	conform to	conform to
Maker	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )
Parts packaging code	TSSOP	TSSOP	TSSOP	TSSOP
package instruction	HTSSOP,	HTSSOP,	HTSSOP,	HTSSOP,
Contacts	20	20	20	20
Manufacturer packaging code	FE	FE	FE	FE
Reach Compliance Code	compliant	compliant	compliant	compliant
ECCN code	EAR99	EAR99	EAR99	EAR99
Amplifier type	OPERATIONAL AMPLIFIER	OPERATIONAL AMPLIFIER	OPERATIONAL AMPLIFIER	OPERATIONAL AMPLIFIER
Nominal Common Mode Rejection Ratio	105 dB	105 dB	105 dB	105 dB
Maximum input offset voltage	1000 µV	1300 µV	1300 µV	1000 µV
JESD-30 code	R-PDSO-G20	R-PDSO-G20	R-PDSO-G20	R-PDSO-G20
JESD-609 code	e3	e3	e3	e3
length	6.5 mm	6.5 mm	6.5 mm	6.5 mm
Humidity sensitivity level	1	1	1	1
Negative supply voltage upper limit	-18 V	-18 V	-18 V	-18 V
Nominal Negative Supply Voltage (Vsup)	-5 V	-5 V	-5 V	-5 V
Number of functions	1	1	1	1
Number of terminals	20	20	20	20
Maximum operating temperature	70 °C	85 °C	85 °C	70 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	HTSSOP	HTSSOP	HTSSOP	HTSSOP
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
Maximum seat height	1.2 mm	1.2 mm	1.2 mm	1.2 mm
Nominal slew rate	1.6 V/us	1.6 V/us	1.6 V/us	1.6 V/us
Supply voltage upper limit	18 V	18 V	18 V	18 V
Nominal supply voltage (Vsup)	5 V	5 V	5 V	5 V
surface mount	YES	YES	YES	YES
Temperature level	COMMERCIAL	INDUSTRIAL	INDUSTRIAL	COMMERCIAL
Terminal surface	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	0.65 mm	0.65 mm	0.65 mm	0.65 mm
Terminal location	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
Nominal Uniform Gain Bandwidth	3600 kHz	3600 kHz	3600 kHz	3600 kHz
width	4.4 mm	4.4 mm	4.4 mm	4.4 mm

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