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Silicon Labs TS1103-200EG6T
- Part No.:
- TS1103-200EG6T
- Manufacturer:
- Silicon Labs
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
TS1103-200EG6T.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,001
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Product details
Overview
TS1103-200EG6T from Silicon Laboratories is a bidirectional high-side current-sense amplifier with 200 V/V fixed gain, 1 μA supply current, ±200 μV max input offset voltage, and 0.6% max gain error, operating over –40°C to +105°C. It delivers voltage output proportional to sensed current direction and magnitude across an external shunt in battery-powered power management systems.
For engineers reviewing the TS1103-200EG6T datasheet, TS1103-200EG6T pinout, TS1103-200EG6T application, or TS1103-200EG6T equivalent, key selection criteria include its ultra-low quiescent current, wide 2 V to 27 V common-mode input range, integrated SIGN comparator for current-direction indication, and SOT23-6 packaging optimized for space-constrained portable designs.
Technical Context
The TS1103-200EG6T implements a fully differential, self-powered architecture using matched p-channel FETs (M1/M2) to enable true bidirectional sensing without dead zone at zero-crossing. Its internal gain-setting resistors (RGAIN = 100 Ω, ROUT = 20 kΩ) define the precise 200 V/V transfer function.
It integrates a 50 kHz 2nd-order differential low-pass filter to suppress high-frequency noise and features a push-pull SIGN output that transitions cleanly between logic HIGH (VRS+ > VRS−) and LOW (VRS− > VRS+) with symmetric propagation delay down to 0.4 ms at ±10 mV VSENSE.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 200 V/V - fixed ratio converting ±2.5 mV to ±15 mV input sense voltage into 0.5 V to 3 V output swing |
| Supply Current | 1.0 μA max - enables multi-year operation from coin-cell or energy-harvesting sources |
| Input Offset Voltage | ±200 μV max - supports accurate sub-mA current measurement with typical 10 mΩ shunt |
| Common-Mode Range | +2 V to +27 V - operates directly on battery or DC bus without level-shifting circuitry |
| Gain Error | ±0.6% max - ensures <1% total error contribution in precision load monitoring |
| Operating Temp | –40°C to +105°C - qualified for industrial and automotive cabin-ambient environments |
| Output Settling Time | 4.3 ms to 1% - sufficient for slow-varying battery charge/discharge profiling |
Pinout & Package
TS1103-200EG6T is housed in a 6-pin SOT23 package (JEDEC MO-178 AB, EIAJ SC74A compliant), with 1.50–1.75 mm body width, 2.80–3.00 mm length, and 0.95 mm height. Pin 1 is GND; pin 2 is SIGN; pin 3 is OUT; pin 4 is RS−; pin 5 is VDD; pin 6 is RS+.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Analog ground reference | Return path for internal amplifier bias and output stage; must connect to low-impedance analog ground plane |
| 2 (SIGN) | Digital current-direction indicator | Push-pull output asserting HIGH when VRS+ > VRS− (forward current), LOW when VRS− > VRS+ (reverse current) |
| 3 (OUT) | Amplified sense voltage output | Voltage output proportional to |VRS+ − VRS−| × 200; swings rail-to-rail relative to RS− within VRS+(min) − VSENSE constraints |
| 4 (RS−) | Non-inverting sense input | Connects to load-side of external shunt resistor; forms Kelvin sense node for accurate VSENSE capture |
| 5 (VDD) | SIGN comparator supply | Accepts 1.25 V to 5.5 V logic supply independent of RS+ voltage; powers only SIGN output stage |
| 6 (RS+) | Inverting sense input | Connects to power-side of external shunt resistor; withstands up to +27 V common-mode while sinking <20 mA |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional sensing with no dead zone | Zero-crossing detection via dual-FET architecture eliminates ambiguity at ILOAD = 0 A, enabling true charge/discharge state identification |
| Integrated 50 kHz differential low-pass filter | On-die 2nd-order filter rejects switching regulator ripple and motor drive noise without external RC components or offset penalty |
| Self-powered operation | Draws supply current directly from RS+/RS− terminals-no separate VCC required for core amplifier functionality |
| Kelvin-compatible RS+ and RS− inputs | Dedicated high- and low-side sense terminals minimize PCB trace resistance errors, supporting <0.5% total measurement error with proper layout |
| Logic-level SIGN output with VDD decoupling | Separate VDD pin allows SIGN to interface directly with 1.25–5.5 V microcontrollers while isolating digital noise from analog signal path |
Applications
| Smartphone Battery Monitoring | Notebook Power Management |
|---|---|
Use Scenario: Real-time tracking of charging/discharging current in lithium-ion battery packs during USB-C PD negotiation and adaptive fast-charge cycles. IC Role / Device Role / Timing Role: High-side bidirectional current-sense amplifier providing analog VOUT and digital SIGN signals to system MCU for coulomb counting and state-of-charge estimation. Use Value: Enables <1% full-scale current accuracy over temperature with 1 μA quiescent draw, extending standby runtime without sacrificing measurement fidelity. | Use Scenario: Dynamic load current profiling across CPU, GPU, and SSD rails to trigger thermal throttling and optimize power delivery efficiency. IC Role / Device Role / Timing Role: Precision current monitor interfaced to PMIC ADC inputs, with SIGN output feeding interrupt logic for rapid overcurrent response. Use Value: Wide 2–27 V common-mode range allows direct placement on 3.3 V, 5 V, and 12 V rails; 200 V/V gain matches typical 10–20 mΩ shunts for 0.5–3 V output scaling. |
| Portable Medical Device Charging | Industrial Smart Charger |
Use Scenario: Safety-critical current supervision during LiPo battery charging in handheld diagnostic tools, requiring reverse-current detection during fault conditions. IC Role / Device Role / Timing Role: Bidirectional sense amplifier delivering polarity-aware analog output and fail-safe SIGN flag to safety MCU for charge termination and fault isolation. Use Value: ±200 μV VOS and symmetric SIGN propagation ensure reliable zero-crossing detection even under aging shunt drift, meeting IEC 62368-1 monitoring requirements. | Use Scenario: Programmable constant-current/constant-voltage charging for 2S–4S battery packs in warehouse logistics scanners and ruggedized handhelds. IC Role / Device Role / Timing Role: Primary current feedback element in closed-loop charger control, with SIGN output used to auto-select charge/discharge mode in firmware. Use Value: 0.6% gain error and –40°C to +105°C rating support production-grade calibration stability across global manufacturing and field deployment environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA219BIDR | 26 V max common-mode, I²C digital output, 100 μA supply current, no SIGN output | Requires MCU I²C interface and software direction decoding; lacks hardware-level zero-crossing flag | Choose when digital bus integration and configurable gain outweigh need for ultra-low IQ and deterministic SIGN signaling |
| MAX40056AUT+T | 36 V common-mode, 2.5 μA supply current, 150 μV VOS, open-drain SIGN, no internal filter | Higher voltage tolerance suits 24 V industrial buses; requires external RC filter for noise immunity | Choose for >27 V systems where added noise filtering complexity is acceptable for extended voltage margin |
Compared with INA219BIDR and MAX40056AUT+T, TS1103-200EG6T uniquely combines sub-μA IQ, integrated noise filtering, and deterministic SIGN output in SOT23-6-making it optimal for battery-constrained, analog-domain current monitoring where firmware overhead and layout area are critical.
Availability
TS1103-200EG6T is available at Aetrix Electronics and suitable for smartphone battery monitoring, notebook power management, portable medical device charging, industrial smart chargers, and smart phone power delivery requiring stable component supply and long-term manufacturability.
Supply support for TS1103-200EG6T 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
Silicon Laboratories is a fabless semiconductor company specializing in low-power, mixed-signal ICs for timing, IoT, and embedded systems, headquartered in Austin, TX.
The TS1103 family was designed specifically for ultra-low-power, high-accuracy bidirectional current sensing in portable and battery-operated equipment-emphasizing minimal supply current, wide common-mode range, and integrated direction detection.
FAQ
What is the maximum common-mode voltage the TS1103-200EG6T can tolerate?
The TS1103-200EG6T supports a guaranteed common-mode input range of +2 V to +27 V on its RS+ and RS− pins. Absolute maximum rating is +27 V, with transient tolerance up to ±28 V differential across RS+ and RS−. Operation beyond +27 V risks permanent damage and is not characterized.
Does the TS1103-200EG6T require an external power supply for its main amplifier?
No, the TS1103-200EG6T is self-powered-the core current-sense amplifier draws operating current directly from the RS+ and RS− terminals. Only the SIGN comparator requires an external VDD supply (1.25 V to 5.5 V) on pin 5; the main amplifier has no VCC pin.
How does the SIGN output behave during current reversal near zero?
The TS1103-200EG6T exhibits no dead zone at current reversal: SIGN transitions cleanly from HIGH to LOW (or vice versa) when VRS+ equals VRS−, due to its dual-FET architecture and symmetric comparator design. Propagation delay remains consistent (≤0.4 ms at ±10 mV) regardless of direction.
Can the TS1103-200EG6T be used with a 1.8 V logic supply for the SIGN pin?
Yes-pin 5 (VDD) accepts 1.25 V to 5.5 V, including 1.8 V. At 1.8 V, SIGN output low voltage is ≤0.2 V (ISINK = 35 µA) and high voltage is ≥1.6 V (ISOURCE = 35 µA), ensuring robust interfacing with 1.8 V GPIOs without level shifters.
What is the recommended output capacitor value for ADC interfacing with the TS1103-200EG6T?
A 22 nF to 100 nF ceramic capacitor from OUT (pin 3) to GND is recommended when driving a switched-capacitor ADC input. This minimizes voltage droop during sampling while maintaining adequate bandwidth; values >100 nF excessively reduce small-signal bandwidth below 1 kHz.
TS1103-200EG6T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Silicon Labs
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 4.5 kHz
- Current - Input Bias:
- -
- Voltage - Input Offset:
- 30 µV
- Current - Supply:
- 680nA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2 V
- Voltage - Supply Span (Max):
- 25 V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
TS1103-200EG6T FAQ
1.How can I place an order for TS1103-200EG6T through Aetrix?
Please submit a Request for Quotation (RFQ) for TS1103-200EG6T 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 TS1103-200EG6T reliable?
The price and inventory of TS1103-200EG6T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS1103-200EG6T is usually 5 days.
3.What payment methods are accepted for TS1103-200EG6T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS1103-200EG6T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS1103-200EG6T?
TS1103-200EG6T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS1103-200EG6T 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 TS1103-200EG6T?
For technical support, including TS1103-200EG6T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS1103-200EG6T requirements.
6.How does Aetrix verify that TS1103-200EG6T is sourced from the original manufacturer or authorized distributors?
All TS1103-200EG6T 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 TS1103-200EG6T meets industry standards.
7.What is the process for return or replacement of TS1103-200EG6T?
All TS1103-200EG6T units undergo pre-shipment inspection (PSI). If there is an issue with TS1103-200EG6T, 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 TS1103-200EG6T part is unused and in its original packaging.
Return procedure for TS1103-200EG6T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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