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Analog Devices Inc./Maxim Integrated MAX9610TEXK+T
- Part No.:
- MAX9610TEXK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX9610TEXK+T.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,181
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Product details
Overview
The MAX9610TEXK+T from Maxim Integrated is a unidirectional high-side current-sense amplifier with 25V/V fixed gain, 500μV max input offset voltage, 0.5% max gain error, and 1μA max quiescent supply current. It operates over a +1.6V to +5.5V input common-mode range and delivers voltage output for precision Li+-battery current monitoring in space-constrained portable systems.
For engineers reviewing the MAX9610TEXK+T datasheet, MAX9610TEXK+T pinout, MAX9610TEXK+T application, or MAX9610TEXK+T equivalent, this device is selected for ultra-low-power, high-accuracy battery current sensing where minimal voltage drop (≤50mV full-scale), SC70 footprint compatibility, and -40°C to +85°C operation are critical design requirements.
Technical Context
The MAX9610TEXK+T uses a BiCMOS-based current-mirror architecture with matched internal gain resistors (R1 = 400Ω, ROUT = 10kΩ) to achieve precise 25V/V amplification of differential sense voltage (VSENSE = VRS+ − VRS−). Its supply is derived solely from the input common-mode voltage-no separate VCC-enabling direct integration into single-cell Li+ battery rails.
It features rail-to-rail output swing limited by VRS+ − VSENSE − VOH, supports Kelvin-sense PCB layout for low-current accuracy, and maintains stable operation with any external capacitive load on OUT. Small-signal bandwidth is 170kHz at G = 25, with 35μs settling time to 1% for 25mV step inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 25V/V - sets output scaling: VOUT = 25 × (VRS+ − VRS−); enables use of larger RSENSE for sub-100mV full-scale sensing without ADC resolution loss |
| Input Offset Voltage (VOS) | ±500μV max - contributes ≤12.5mV error at full-scale 50mV VSENSE; allows accurate measurement down to ~2mA with 25mΩ sense resistor |
| Gain Error | ±0.5% max - introduces ≤0.125mV error per 25mV VSENSE; ensures consistent scaling across temperature and supply voltage |
| Common-Mode Input Range | +1.6V to +5.5V - fully covers Li+ battery operating range (2.9V–4.2V), enabling direct connection without level-shifting circuitry |
| Quiescent Supply Current | 1μA max - draws negligible current from battery rail; extends runtime in always-on battery gauging applications |
| Output Resistance | 7.0–13.2kΩ - defines minimum recommended load impedance (>100kΩ) to avoid gain deviation; compatible with standard SAR ADC inputs |
| Small-Signal Bandwidth | 170kHz - supports dynamic current monitoring up to ~10kHz signal content with <3dB attenuation |
Pinout & Package
The MAX9610TEXK+T is housed in a 5-pin SC70 package (2.0mm × 2.2mm × 0.95mm body height), optimized for high-density portable PCB layouts. Pin 1 is marked with a dot; pins are numbered counterclockwise from the mark.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Primary return path for internal bias and output stage; must be connected to low-impedance system ground near sense resistor |
| RS+ (Pin 5) | High-side power rail input | Connects to battery anode or power source; supplies operating current and defines common-mode voltage for entire device |
| RS− (Pin 4) | Load-side sense node | Connects to load side of sense resistor; forms differential input with RS+; requires Kelvin trace routing to avoid IR drop errors |
| OUT (Pin 3) | Voltage output | Delivers amplified VSENSE × 25; drives ADC input or comparator; requires no external pull-up; stable with capacitive loads |
| N.C. (Pin 2) | No connection | Internally unconnected; must remain floating-no tie to GND, VDD, or other signals to prevent parametric shift |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1μA max enables multi-year battery life in always-on fuel-gauging circuits without compromising measurement frequency |
| Low input offset voltage | 500μV max ensures ≤2% error at 25mV full-scale VSENSE, supporting accurate low-current detection in sleep-mode monitoring |
| Wide common-mode range | +1.6V to +5.5V matches Li+ battery voltage profile end-to-end, eliminating need for external level-shifters or supply regulators |
| Fixed 25V/V gain | Optimized for 25–50mV full-scale sense voltage; simplifies RSENSE selection and reduces calibration burden vs. programmable alternatives |
| SC70 package compatibility | 5-pin SC70 footprint (2.0mm × 2.2mm) allows placement adjacent to battery connectors or PMICs in ultra-thin mobile designs |
Applications
| Smartphone Battery Monitoring | USB Power Delivery Gauging |
|---|---|
|
Use Scenario: Real-time discharge current tracking during active screen usage and standby in smartphones with single-cell Li+ batteries. IC Role / Device Role / Timing Role: High-side current-sense amplifier measuring voltage across 10–25mΩ sense resistor placed between battery anode and system PMIC. Use Value: Enables accurate coulomb counting with <2% total error over battery life, supporting precise remaining capacity estimation under varying load profiles. |
Use Scenario: Measuring sourced current from USB-C port during 5V/9V/15V PD negotiations and power delivery phases. IC Role / Device Role / Timing Role: High-side monitor on VBUS path upstream of buck converter, interfacing directly with USB PD controller's analog monitoring input. Use Value: Provides fast-response current feedback (<35μs settling) to enforce USB PD current limits while maintaining <0.5% gain stability across input voltage transitions. |
| Portable Medical Device Battery Safety | Li+ PDA Power Management |
|
Use Scenario: Overcurrent detection and charge/discharge logging in handheld ECG monitors powered by removable Li+ cells. IC Role / Device Role / Timing Role: Unidirectional high-side amplifier feeding microcontroller ADC channel; configured for 30mV full-scale sensing to preserve headroom during peak pulse currents. Use Value: Delivers reliable trip-point detection at 3A with 25mΩ RSENSE while consuming only 1μA-critical for FDA-cleared low-power safety-critical subsystems. |
Use Scenario: System-level power budgeting in legacy PDAs with replaceable Li+ batteries and discrete PMICs. IC Role / Device Role / Timing Role: Precision current sensor on main battery rail, reporting to ARM7-based host via 10-bit ADC; operates continuously during suspend/resume cycles. Use Value: Maintains ±0.5% gain accuracy across -40°C to +85°C ambient, ensuring consistent power accounting despite thermal cycling in handheld form factors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4008ETA+T | Same 25V/V gain, but 2.5μA ICC (2.5× higher), 1mV VOS (2× higher), SC70-6 package with dedicated VCC pin | Requires separate 2.7–5.5V supply; unsuitable for direct battery-rail sensing without regulator | Select when external regulated supply is available and higher accuracy is not required |
| INA213AIDCKR | 25V/V gain, 100μA ICC, 100μV VOS, SOT-23-6; includes integrated 2kΩ gain resistor network | Lower VOS improves sub-10mA sensing; higher ICC limits use in multi-year battery applications | Select when ultra-low offset dominates over quiescent current in short-life portable tools |
Compared with MAX4008ETA+T and INA213AIDCKR, the MAX9610TEXK+T uniquely combines 1μA ICC, 500μV VOS, and true single-supply operation from the sensed rail-making it the only option for long-life, rail-tied Li+ monitoring where board space and power budget are simultaneously constrained.
Availability
MAX9610TEXK+T is available at Aetrix Electronics and suitable for smartphone battery management, USB-C power delivery gauging, and portable medical device safety monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX9610TEXK+T 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
Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for demanding industrial, automotive, and portable applications.
The MAX9610TEXK+T belongs to Maxim's precision current-sense amplifier product line, engineered specifically for ultra-low-power, high-accuracy battery current monitoring in space- and energy-constrained Li+-powered devices.
FAQ
What is the maximum input common-mode voltage supported by the MAX9610TEXK+T?
The MAX9610TEXK+T supports a maximum input common-mode voltage of +5.5V. This specification is guaranteed over the full -40°C to +85°C operating temperature range and allows direct interface with fully charged single-cell Li+ batteries (up to 4.2V) while preserving 1.3V of headroom for transient spikes. The device draws supply current from this same common-mode rail-no separate VCC is needed.
Does the MAX9610TEXK+T require an external power supply?
No, the MAX9610TEXK+T does not require an external power supply. It derives all operating current from the input common-mode voltage applied to RS+ and RS−, making it a true single-supply current-sense amplifier. This eliminates the need for additional LDOs or regulators in battery-powered systems and simplifies schematic design for portable applications.
What is the function of the N.C. pin on the MAX9610TEXK+T SC70 package?
The N.C. pin (Pin 2) on the MAX9610TEXK+T SC70 package is internally unconnected and must remain electrically floating. Connecting it to GND, VDD, or any other node may alter internal bias conditions and degrade key parameters including input offset voltage and gain accuracy. The datasheet explicitly prohibits any connection to this terminal.
Can the MAX9610TEXK+T be used for bidirectional current sensing?
No, the MAX9610TEXK+T is a unidirectional high-side current-sense amplifier and cannot measure reverse (discharge vs. charge) current polarity. Its output voltage is referenced to GND and only increases with positive VSENSE (RS+ > RS−). For bidirectional applications, two MAX9610TEXK+T devices in complementary configuration-or a dedicated bidirectional part like MAX9611-are required.
What is the recommended sense resistor value for MAX9610TEXK+T in a 3.6V Li+ battery application?
For optimal performance with a nominal 3.6V Li+ battery, a 25mΩ sense resistor is recommended with the MAX9610TEXK+T. This yields 90mV full-scale output at 3.6A load (25mΩ × 3.6A × 25V/V), staying well within the device's output swing limit while providing sufficient signal for 10-bit ADC resolution. Lower values (e.g., 10mΩ) reduce I²R loss but require tighter VOS control to maintain accuracy.
MAX9610TEXK+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 170 kHz
- Current - Input Bias:
- -
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 750nA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 1.6 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
MAX9610TEXK+T FAQ
1.How can I place an order for MAX9610TEXK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9610TEXK+T 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 MAX9610TEXK+T reliable?
The price and inventory of MAX9610TEXK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9610TEXK+T is usually 5 days.
3.What payment methods are accepted for MAX9610TEXK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9610TEXK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9610TEXK+T?
MAX9610TEXK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9610TEXK+T 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 MAX9610TEXK+T?
For technical support, including MAX9610TEXK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9610TEXK+T requirements.
6.How does Aetrix verify that MAX9610TEXK+T is sourced from the original manufacturer or authorized distributors?
All MAX9610TEXK+T 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 MAX9610TEXK+T meets industry standards.
7.What is the process for return or replacement of MAX9610TEXK+T?
All MAX9610TEXK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9610TEXK+T, 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 MAX9610TEXK+T part is unused and in its original packaging.
Return procedure for MAX9610TEXK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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