LTC6102IDD-1-TR 查看數據表（PDF） - Linear Technology

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LTC6102IDD-1-TR

Precision Zero Drift Current Sense Amplifier

Linear Technology 

LTC6102

LTC6102-1/LTC6102HV

pin functions

–INS (Pin 1): Amplifier Inverting Input. When tied to –INF,

the internal sense amplifier will drive –INS to the same

potential as +IN.

–INF (Pin 2): Force Input. This pin carries the input

current from RIN and must be tied to –INS near RIN. A

resistor (RIN) tied from V+ to –INF sets the output current

IOUT = VSENSE/RIN. VSENSE is the voltage across the ex-

ternal RSENSE.

V– (Pin 3, LTC6102/LTC6102HV Only): Negative Supply.

EN (Pin 3, LTC6102-1 Only): Enable Pin, Referenced to

the Negative Supply. When the enable pin is pulled high,

the LTC6102-1 is active. When the enable pin is pulled low

or left floating, the LTC6102-1 is disabled.

OUT (Pin 4): Open-Drain Current output. OUT will source

a current that is proportional to the sense voltage into

an external resistor. IOUT is the same current that enters

–INF.

V– (Pin 5): Negative Supply.

VREG (Pin 6): Internal Regulated Supply. A 0.1µF (or

larger) capacitor should be tied from VREG to V+. VREG is

not designed to drive external circuits.

V+ (Pin 7): Positive Supply. Supply current is drawn

through this pin.

+IN (Pin 8): Amplifier Noninverting Input. Must be tied

to the system load end of the sense resistor. The +IN pin

has an internal 5k series resistor designed to allow large

input voltage transients or accidental disconnection of the

sense resistor. This pin can be held up to 20V below the

–INS pin indefinitely, or up to 60V below the –INS pin for

up to one second (see Absolute Maximum Ratings).

Exposed Pad (Pin 9, DFN Only): V–. The Exposed Pad

must be soldered to PCB.

6102fe

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For more information www.linear.com/LTC6102

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