LTC6102-1

Part: LTC6102/LTC6102HV from Linear Technology Corporation

Type: Precision Zero Drift Current Sense Amplifier

Key Specs:

• Supply Range (LTC6102): 4V to 60V
• Supply Range (LTC6102HV): 5V to 100V
• Input Offset: ±10μV Maximum
• Input Offset Drift: ±50nV/°C Maximum
• Step Response: 1μs
• Input Bias Current: 3nA Maximum
• PSRR: 130dB Minimum
• Output Current: up to 1mA
• Operating Temperature Range: –40°C to 125°C
• Disable Mode Current (LTC6102-1): 1μA Maximum
• Maximum Input Sense Voltage: 2V

Features:

• Gain Configurable with Two Resistors
• Low Input Bias Current
• PSRR 130dB Minimum
• Output Currents up to 1mA
• Disable Mode (LTC6102-1 Only)
• High supply voltage rating
• Low drift and offset
• Monitors current via external sense resistor
• Converts input voltage to output current
• Translates small sense signal on large common mode voltage to ground-referred signal
• Low DC offset allows use of very low shunt resistor values
• Fast response for load current warnings and shutoff protection control

Applications:

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

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 Two 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, 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.

the full operating temperature range, otherwise specifications are at TA = 25°C. RIN = 10Ω**, ROUT = 10k, VSENSE+ = V+ (see Figure 1 for details), V+ = 12V, V– = 0V, VEN = 2.2V unless otherwise noted.**

Electrical Characteristics

(LTC6102, LTC6102-1) The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. RIN = 10Ω**, ROUT = 10k, VSENSE+ = V+ (see Figure 1 for details), V+ = 12V, V– = 0V, VEN = 2.2V unless otherwise noted.**

(LTC6102HV) The l denotes the specifications which apply over the full Electrical Characteristics

operating temperature range, otherwise specifications are at TA = 25°C. RIN = 10Ω**, ROUT = 10k, VSENSE+ = V+ (see Figure 1 for details), V+ = 12V, V– = 0V unless otherwise noted.**

Electrical Characteristics

(LTC6102HV) The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. RIN = 10Ω**, ROUT = 10k, VSENSE+ = V+ (see Figure 1 for details), V+ = 12V, V– = 0V unless otherwise noted.**

Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. In addition to the Absolute Maximum Ratings, the output current of the LTC6102 must be limited to ensure that the power dissipation in the LTC6102 does not allow the die temperature to exceed 150°C. See the Applications Information "Output Current Limitations Due to Power Dissipation" for further information.

Note 2: The LTC6102C/LTC6102C-1/LTC6102HVC are guaranteed to meet specified performance from 0°C to 70°C. The LTC6102C/LTC6102C-1/ LTC6102HVC are designed, characterized and expected to meet specified performance from –40°C to 85°C but are not tested or QA sampled at these temperatures. LTC6102I/LTC6102I-1/LTC6102HVI are guaranteed

to meet specified performance from –40°C to 85°C. The LTC6102H/ LTC6102H-1/LTC6102HVH are guaranteed to meet specified performance from –40°C to 125°C.

Note 3: These Parameters are guaranteed by design and are not 100% tested. Thermocouple effects preclude measurements of these voltage levels during automated testing.

Note 4: Limits are fully tested. Limit is determined by high speed automated test capability.

Note 5: IB specification is limited by practical automated test resolution. Please refer to the Typical Performance Characteristics section for more information regarding actual typical performance. For tighter specifications, please contact LTC Marketing.

• LTC6102/LTC6102-1
• LTC6102HV105V
  Input Voltage Range
• –INF, –INS
• +IN(V+ – 20V to V+ + 1V)
• EN(V– – 0.3V to V– + 9V)
• Differential (–INS – +IN), 1 Second
• Output Voltage Range
• LTC6102/LTC6102HV
• LTC6102-1
• Input Current
• –INF, –INS
• +IN–10mA
• EN±10mA