LTC6102C-1

Part: LTC6102 LTC6102-1/LTC6102HV from Linear Technology Type: Precision Zero Drift Current Sense Amplifier Description: The LTC6102/LTC6102HV are versatile, high voltage, high-side current sense amplifiers with a supply range up to 100V, ±10μV input offset, and 1μs step response, capable of outputting up to 1mA.

Operating Conditions:

• Supply voltage: 4V to 60V (LTC6102/LTC6102-1), 5V to 100V (LTC6102HV)
• Operating temperature: -40°C to 125°C (LTC6102H/LTC6102H-1/LTC6102HVH)
• Maximum output current: 1mA (for 6V ≤ V+ ≤ 60V/100V)

Absolute Maximum Ratings:

• Max supply voltage: 70V (LTC6102/LTC6102-1), 105V (LTC6102HV)
• Max continuous current: +10mA (Output Current)
• Max storage temperature: 150°C

Key Specs:

• Input Offset Voltage (VOS): 10μV max (V SENSE = 100μV, 6V ≤ V+ ≤ 60V/100V)
• Input Offset Voltage Drift (ΔVOS/ΔT): 50 nV/°C max (LTC6102C, LTC6102I, LTC6102C-1, LTC6102I-1)
• Input Bias Current (IB): 3 nA max (R IN = 40k, V SENSE = 2mV, LTC6102C, LTC6102I, LTC6102C-1, LTC6102I-1)
• Power Supply Rejection Ratio (PSRR): 130 dB min (V SENSE = 100μV, V+ = 6V to 60V/100V)
• Input Sense Voltage Full Scale (VSENSE(MAX)): 2V (Error <1%, R IN = 10k, R OUT = 10k, 6V ≤ V+ ≤ 60V/100V)
• Input Step Response (tr): 1μs (to 2.5V on a 5V Output Step, Δ V SENSE = 100mV Transient, 6V ≤ V+ ≤ 60V/100V)
• Signal Bandwidth (BW): 200 kHz (I OUT = 1mA, R IN = 100Ω, R OUT = 4.99k)
• Supply Current (IS): 400 μA max (V+ = 4V, I OUT = 0, R IN = 10k, R OUT = 100k)

Features:

• Supply Range: 4V to 60V (LTC6102), 5V to 100V (LTC6102HV)
• ±10μV Input Offset Maximum
• ±50nV/°C Input Offset Drift Maximum
• Fast Response: 1μs Step Response
• Gain Configurable with Two Resistors
• Low Input Bias Current: 3nA Maximum
• PSRR 130dB Minimum
• Output Currents up to 1mA
• Operating Temperature Range: -40°C to 125°C
• Disable Mode (LTC6102-1 Only): 1μA Maximum

Applications:

• Current Shunt Measurement
• Battery Monitoring
• Remote Sensing
• Load Protection
• Motor Control
• Automotive Controls

Package:

• 8-Lead MSOP
• 8-Lead (3mm × 3mm) Plastic DFN

• n
• Supply Range: 4V to 60V , 70V Maximum (LTC6102) 5V to 100V , 105V Maximum (LTC6102HV)
• n ±10μV Input Offset Maximum
• n ±50nV/°C Input Offset Drift Maximum
• n Fast Response: 1μs Step Response
• n Gain Configurable with T wo Resistors
• n Low Input Bias Current: 3nA Maximum
• n PSRR 130dB Minimum
• n Output Currents up to 1mA
• n Operating Temperature Range: -40°C to 125°C
• n Disable Mode (LTC6102-1 Only): 1μA Maximum
• n Available in 8-Lead MSOP and 3mm × 3mm DFN Packages

• n Current Shunt Measurement
• n Battery Monitoring
• n Remote Sensing
• n Load Protection
• n Motor Control
• n Automotive Controls

L , L T , L TC, L TM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.

-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 R IN and must be tied to -INS near R IN . A resistor (R IN ) tied from V + to -INF sets the output current I OUT = V SENSE /R IN . V SENSE is the voltage across the external R SENSE .

V - (Pin 3, L TC6102/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 L TC6102-1 is active. When the enable pin is pulled low or left floating, the L TC6102-1 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 . I OUT 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 V REG to V + . V REG 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.

• LTC6102HV.........................................................105V
• Input Voltage Range
• -INF , -INS................................(V
• +IN............................................(V
• EN............................................(V
• Differential (-INS - +IN), 1 Second
• Output Voltage Range LTC6102/LTC6102HV...............(V - -
• LTC6102-1
• Input Current
• -INF ,