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Analog Devices Inc. LTC6101ACS5#TRPBF
- Part No.:
- LTC6101ACS5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
LTC6101ACS5#TRPBF.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:15,120
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Product details
Overview
LTC6101ACS5#TRPBF from Analog Devices is a high-voltage, high-side current sense amplifier in 5-lead TSOT-23 package, delivering 1μs step response, ±300μV max input offset voltage, and 118dB min PSRR. It operates from 4V to 60V supply and supports unidirectional current monitoring up to 500mV sense voltage - ideal for automotive battery protection and industrial power rail supervision.
For engineers reviewing the LTC6101ACS5#TRPBF datasheet, LTC6101ACS5#TRPBF pinout, LTC6101ACS5#TRPBF application, or LTC6101ACS5#TRPBF equivalent, key selection criteria include its gain-configurable transconductance architecture, low 250μA supply current at 12V, and compatibility with Kelvin-sense shunt layouts for sub-1% measurement accuracy under high common-mode voltage.
Technical Context
The LTC6101ACS5#TRPBF uses a precision current-output architecture: an internal amplifier forces –IN to match +IN potential, enabling VSENSE across an external shunt to drive output current IOUT = VSENSE / RIN. This eliminates common-mode rejection limitations of voltage-output amplifiers in high-side sensing.
Its transconductance gain is set externally via RIN (input resistor) and ROUT (output resistor), supporting configurable full-scale outputs (e.g., 50mV–500mV sense → 0.5V–5V output). The device maintains 140kHz signal bandwidth at 200μA load and exhibits <1.5μs response time even at VS = 4V, enabling fast overcurrent detection in DC/DC converters and motor drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4V to 60V - enables direct integration into 5V, 12V, 24V, and 48V industrial and automotive power rails without level-shifting. |
| Input Offset Voltage | ±300μV max (LTC6101A grade) - allows use of small-value shunts (e.g., 5mΩ) while maintaining ≥60dB dynamic range at 100mV full scale. |
| Step Response Time | 1μs (to 2.5V on 5V output step) - supports real-time load current warning and shutdown in safety-critical systems. |
| PSRR | 118dB min - rejects supply ripple and noise, critical when sensing near noisy switching regulators or battery inputs. |
| Supply Current | 250μA typical at 12V - minimizes self-heating and preserves efficiency in always-on battery-monitoring circuits. |
| Input Sense Voltage | 500mV max full-scale - accommodates wide current ranges (e.g., 1A–200A) with appropriate shunt selection. |
| Operating Temp Range | –40°C to 85°C (C-grade) - qualified for under-hood automotive and industrial control environments. |
Pinout & Package
5-lead TSOT-23 (ThinSOT™) package with 0.65mm pitch, 1mm profile, and HV-optimized spacing for >60V operation. Pin 1 marked by dot; no exposed pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN | High-side sense input (non-inverting) | Connected directly to load side of shunt; forms Kelvin sense node for accurate VSENSE capture. |
| –IN | High-side sense input (inverting) | Driven to same potential as +IN via internal amplifier; tied to V+ through RIN to set transconductance gain. |
| V+ | Positive supply input | Supplies operating current; can be connected to shunt's high-potential side to exclude IC current from measurement. |
| V– | Negative supply / ground reference | Ground return for output current; defines 0V reference for VOUT = IOUT × ROUT. |
| OUT | Current output terminal | Sources IOUT = VSENSE / RIN; requires external ROUT to ground to generate ground-referenced analog voltage output. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable gain via RIN/ROUT | Enables precise full-scale output tuning (e.g., 20× to 100×) without changing IC - reduces BOM count across current-sense variants. |
| Low 170nA max input bias current | Minimizes error from shunt parasitic resistance; supports accurate sensing with high-value RIN (>1MΩ) for ultra-low-power applications. |
| 1μs fast response with 140kHz bandwidth | Meets real-time fault detection requirements in Class D amplifiers, e-fuse controllers, and programmable power supplies. |
| 118dB PSRR at DC–100kHz | Ensures stable output under PWM switching noise or battery ripple - eliminates need for additional supply filtering. |
| Specified down to 4V supply | Allows operation during brownout conditions in 5V systems or with aging Li-ion batteries (3.0–4.2V). |
Applications
| Battery Pack Monitoring | Industrial DC Power Rail Supervision |
|---|---|
Use Scenario: Real-time cell-balancing and overcurrent cutoff in 12V–48V lithium battery packs. IC Role / Device Role / Timing Role: High-side current sensor feeding ADC or comparator for load-current-triggered protection logic. Use Value: ±300μV offset enables 1% accuracy at 10A with 10mΩ shunt; 1μs response ensures shutdown before MOSFET thermal runaway. |
Use Scenario: Continuous current monitoring on 24V PLC I/O power rails with fault logging. IC Role / Device Role / Timing Role: Transconductance amplifier converting shunt voltage to ground-referenced analog output for microcontroller ADC sampling. Use Value: 118dB PSRR rejects switching noise from adjacent SMPS; 250μA quiescent current avoids loading backup supercapacitors. |
| Automotive Load Dump Protection | Server PSU Current Sharing |
Use Scenario: Detecting sudden current surges during alternator load dump events in vehicle ECUs. IC Role / Device Role / Timing Role: Fast-response current monitor triggering clamping FETs or disabling downstream converters. Use Value: 4V–60V supply range covers cold-crank (6V) to load-dump (60V); 1μs response meets ISO 7637-2 pulse 5a timing constraints. |
Use Scenario: Parallel-phase current balancing in multi-rail server power supplies. IC Role / Device Role / Timing Role: Precision high-side sensor per phase, feeding digital controller for active current-sharing loop. Use Value: Matched ±300μV offset across units ensures <±0.5% inter-phase current mismatch; Kelvin input layout eliminates PCB trace resistance errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX40056ASA+T | Voltage-output architecture; 2.7V–60V supply; 120μV max offset; 1.5μs response. | Requires external op-amp for level shifting; less immune to output loading variations than current-output topology. | Prefer when system already uses voltage-output signal chain and board space permits extra components. |
| INA240A1DGNR | Fixed-gain (20V/V); 2.7V–80V supply; 20μV max offset; 1.5μs response; integrated ESD protection. | Lower offset improves resolution at low currents but lacks gain flexibility; higher supply range suits 72V telecom systems. | Choose when fixed gain suffices and ultra-low offset (<50μV) is mandatory for sub-100mA sensing. |
Compared with MAX40056ASA+T and INA240A1DGNR, the LTC6101ACS5#TRPBF offers unique transconductance-based gain configurability and superior PSRR, making it optimal for noise-sensitive, multi-range, or space-constrained high-side sensing where external component count must be minimized.
Availability
LTC6101ACS5#TRPBF is available at Aetrix Electronics and suitable for battery management systems, industrial power monitoring, and automotive electronics requiring stable component supply with guaranteed C-grade temperature performance (0°C to 70°C, specified).
Supply support for LTC6101ACS5#TRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices (now part of Analog Devices, Inc., a wholly owned subsidiary of Analog Devices, Inc.) designs precision signal processing ICs for demanding measurement and control applications.
The LTC6101 family was developed specifically for high-accuracy, high-voltage, high-side current sensing in space- and power-constrained systems - emphasizing low offset, fast response, and flexible gain configuration without external op-amps.
FAQ
What is the maximum common-mode voltage supported by the LTC6101ACS5#TRPBF?
The LTC6101ACS5#TRPBF supports a maximum total supply voltage of 70V (V+ to V–), with V+ operating up to 60V above V–. Its input pins (+IN and –IN) tolerate voltages up to V+ – 4V, enabling reliable high-side sensing on 48V bus rails. Absolute maximum ratings prohibit exceeding 70V across V+ and V–, regardless of common-mode level.
Can the LTC6101ACS5#TRPBF be used in bidirectional current sensing applications?
No - the LTC6101ACS5#TRPBF is a unidirectional high-side current sense amplifier. Its architecture sources output current proportional only to positive VSENSE (V+ > V–). For bidirectional sensing, Analog Devices recommends the LTC6102 or LTC6104, which feature dual-supply capability and symmetric input stage design.
How does the LTC6101ACS5#TRPBF achieve high PSRR without external compensation?
The LTC6101ACS5#TRPBF integrates a proprietary high-PSRR input stage with matched internal transistor pairs and cascode shielding. Its 118dB minimum PSRR is achieved through on-die layout symmetry and feedback topology that inherently rejects supply-induced errors - no external capacitors or compensation networks are required for specified performance.
What is the recommended layout practice for minimizing error due to input bias current in the LTC6101ACS5#TRPBF?
To minimize bias-current-induced error, route +IN and –IN traces with identical length and impedance, and place RIN as close as possible to the –IN pin. For highest accuracy, add RIN+ = RIN – RSENSE between +IN and V+ (per Figure 4 in the datasheet), reducing offset current error from ±150nA to ±2nA - cutting output error by >98%.
Does the LTC6101ACS5#TRPBF require a minimum load on the OUT pin to maintain accuracy?
Yes - the LTC6101ACS5#TRPBF requires a defined load path (typically ROUT to V–) to convert output current to voltage. Open-circuit OUT causes undefined voltage and violates absolute maximum ratings. Minimum ROUT is not specified, but values below 1kΩ may reduce bandwidth; 5kΩ is typical for 140kHz bandwidth with 200μA load.
LTC6101ACS5#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- 200 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 100 nA
- Voltage - Input Offset:
- 85 µV
- Current - Supply:
- 375µA
- Current - Output / Channel:
- 1 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 60 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
LTC6101ACS5#TRPBF FAQ
1.How can I place an order for LTC6101ACS5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6101ACS5#TRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LTC6101ACS5#TRPBF reliable?
The price and inventory of LTC6101ACS5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6101ACS5#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6101ACS5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6101ACS5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6101ACS5#TRPBF?
LTC6101ACS5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6101ACS5#TRPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LTC6101ACS5#TRPBF?
For technical support, including LTC6101ACS5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6101ACS5#TRPBF requirements.
6.How does Aetrix verify that LTC6101ACS5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6101ACS5#TRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC6101ACS5#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6101ACS5#TRPBF?
All LTC6101ACS5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6101ACS5#TRPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LTC6101ACS5#TRPBF part is unused and in its original packaging.
Return procedure for LTC6101ACS5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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