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Analog Devices Inc./Maxim Integrated MAX9610FELT+T
- Part No.:
- MAX9610FELT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-WFDFN
- Datasheet:
-
MAX9610FELT+T.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,450
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Product details
Overview
The MAX9610FELT+T from Maxim Integrated is a unidirectional high-side current-sense amplifier with 50V/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 MAX9610FELT+T datasheet, MAX9610FELT+T pinout, MAX9610FELT+T application, or MAX9610FELT+T equivalent, key selection criteria include ultra-low ICC for battery life extension, tight VOS for sub-50mV full-scale sensing, CMRR >80dB across temperature, and compatibility with 1mm × 1.5mm μDFN layout constraints in handheld power management.
Technical Context
The MAX9610FELT+T uses a BiCMOS-based current-mirror architecture where an internal pFET sources current through matched gain resistors (R1 = 200Ω, ROUT = 10kΩ), producing VOUT = ILOAD × RSENSE × 50. Its supply is derived solely from the sensed rail (RS+/RS−), eliminating need for separate VCC.
It achieves stable operation without external compensation due to inherent bandwidth limiting (60kHz at G=100), supports Kelvin-sense PCB layouts to reject trace resistance errors, and maintains specified accuracy over −40°C to +85°C with no output phase reversal under common-mode transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 50V/V - scales 20mV–60mV sense voltage to 1V–3V output for direct ADC interfacing with 3.3V systems |
| Input Offset Voltage (VOS) | ±500μV (max) - enables accurate measurement of ≤25mV full-scale VSENSE without calibration |
| Gain Error | ±0.5% (max) - ensures current reading error stays below ±0.5% across temperature and supply range |
| Supply Current (ICC) | 1μA (max) - extends single-cell Li+ battery runtime by minimizing quiescent drain during sleep modes |
| Common-Mode Input Range | +1.6V to +5.5V - fully covers Li+ battery voltage range (2.9V–4.2V) including recharge threshold and full charge |
| Small-Signal Bandwidth | 110kHz - supports fast transient current detection in USB port load switching and PDA power sequencing |
| Output Resistance | 7.0–13.2kΩ - compatible with standard 10kΩ ADC input impedance without loading error |
Pinout & Package
MAX9610FELT+T is housed in a 6-pin μDFN package (1.0mm × 1.5mm × 0.8mm footprint, pins on bottom), RoHS-compliant and tape-and-reel packaged.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal circuitry and output stage; must be low-impedance connection to system ground plane |
| 2 | N.C. | No internal connection; left floating or tied to GND per layout best practice to reduce parasitic coupling |
| 3 | OUT | Voltage output node delivering 50×(VRS+ − VRS−); drives ADC input or comparator with 10kΩ source impedance |
| 4 | RS− | Load-side Kelvin sense terminal; connects directly to low-side of external RSENSE to reject PCB trace resistance |
| 5 | N.C. | No internal connection; electrically isolated; may be omitted in footprint or grounded for mechanical stability |
| 6 | RS+ | Power-side Kelvin sense terminal; connects directly to high-side of RSENSE, referenced to battery or supply rail |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 1μA supply current | Reduces standby power loss to <3.3nW per μA at 3.3V, critical for always-on battery fuel gauging |
| 500μV max input offset voltage | Enables use of 10mΩ–50mΩ sense resistors while maintaining ≤1% total error at 1A load |
| 80dB min common-mode rejection ratio | Rejects noise from noisy DC-DC converters or shared ground paths in multi-rail portable designs |
| 1.6V–5.5V common-mode input range | Operates across full Li+ battery discharge curve without rail-to-rail op-amp or level-shifting circuitry |
| Stable with any capacitive load | Eliminates need for output series resistor or isolation capacitor when driving long traces or ADC sample capacitors |
Applications
| Smartphone Battery Monitoring | USB Power Delivery Port Sensing |
|---|---|
Use Scenario: Real-time battery discharge current tracking during video playback and cellular transmission in compact smartphones. IC Role / Device Role / Timing Role: High-side current-sense amplifier measuring voltage drop across 20mΩ shunt resistor placed between battery anode and PMIC input. Use Value: Enables accurate coulomb counting with <1% full-scale error over battery life, supporting precise remaining capacity estimation. |
Use Scenario: In-line current monitoring on Type-C downstream ports to enforce 3A/5A current limits and detect short-circuit faults. IC Role / Device Role / Timing Role: Unidirectional high-side sensor feeding analog input of USB PD controller for real-time load current feedback. Use Value: Provides sub-10μs response to overcurrent events, enabling fast shutdown before cable or connector damage occurs. |
| Portable Medical Device Power Management | Lithium-Powered PDA System Monitoring |
Use Scenario: Continuous current logging in handheld ECG monitors powered by single-cell Li+ batteries with strict 5-year shelf-life requirements. IC Role / Device Role / Timing Role: Low-quiescent-current sense amplifier supplying data to microcontroller ADC during periodic wake-up cycles. Use Value: Contributes <0.003% of total system standby current, preserving battery charge during multi-week idle periods. |
Use Scenario: Dual-rail current supervision in legacy PDAs with separate 3.3V logic and 5V peripheral rails, each monitored via dedicated MAX9610FELT+T. IC Role / Device Role / Timing Role: Precision analog front-end for battery fuel gauge IC, converting mV-level sense voltages into calibrated digital current values. Use Value: Delivers consistent 0.5% gain accuracy across −20°C to +60°C operating range, ensuring reliable runtime prediction in variable environments. |
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 |
|---|---|---|---|
| INA214AIDCKR | 26V max common-mode, 100μA ICC, 100V/V gain only, SC70-6 package | Requires external level-shifting for >5.5V rails; higher ICC reduces battery life in always-on sensing | Select when wider common-mode range needed beyond Li+ voltage, accepting trade-off in quiescent power |
| MAX40016ATT+T | 1.7V–5.5V common-mode, 1.2μA ICC, 50V/V gain, same μDFN-6 package | Higher VOS (1.5mV max) degrades low-current accuracy; lower CMRR (70dB) increases noise susceptibility | Use only if MAX9610FELT+T is unavailable and design tolerates 3× higher offset-induced error at 100mA load |
Compared with INA214AIDCKR and MAX40016ATT+T, the MAX9610FELT+T uniquely combines 1μA ICC, 500μV VOS, and 5.5V common-mode ceiling in a 1mm × 1.5mm footprint-making it the only option meeting all three specs simultaneously for Li+-based portable current sensing.
Availability
MAX9610FELT+T is available at Aetrix Electronics and suitable for smartphone battery monitoring, USB power delivery port protection, portable medical device power management, and lithium-powered PDA system monitoring requiring stable component supply across extended product lifecycles.
Supply support for MAX9610FELT+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 precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and portable applications.
The MAX9610 family was designed specifically for high-accuracy, ultra-low-power current sensing in single-cell Li+ battery systems-prioritizing minimal VOS, near-zero ICC, and seamless integration into miniature handheld form factors.
FAQ
What is the maximum common-mode voltage supported by the MAX9610FELT+T?
The MAX9610FELT+T supports a guaranteed common-mode input range of +1.6V to +5.5V across −40°C to +85°C. This matches the full operational voltage window of a single-cell lithium-ion battery, from end-of-discharge (~2.9V) to full charge (4.2V), with margin for transient spikes. The absolute maximum rating allows RS+/RS− to reach +6V, but functional operation is specified only up to +5.5V.
Does the MAX9610FELT+T require an external power supply pin?
No, the MAX9610FELT+T does not have a dedicated VCC pin. Its operating power is derived entirely from the voltage applied across RS+ and RS−, making it a true rail-tied current-sense amplifier. This eliminates the need for auxiliary bias supplies and simplifies layout in battery-fed systems where only the sensed rail is available.
What is the output voltage swing limitation of the MAX9610FELT+T?
The MAX9610FELT+T output voltage swing is constrained by VOUT(MAX) = VRS+(MAX) − VSENSE(MAX) − VOH, where VOH is typically 0.1–0.2V. At VRS+ = 3.6V and G = 50, the practical full-scale VSENSE is ~60mV to ensure VOUT remains within linear range. Exceeding this causes clipping, so RSENSE must be selected to keep VSENSE ≤60mV at peak load current.
Can the MAX9610FELT+T be used for bidirectional current sensing?
The MAX9610FELT+T is a unidirectional high-side current-sense amplifier and cannot directly measure reverse current flow. However, a bidirectional implementation is possible using two MAX9610FELT+T devices-one sensing forward current (RS+ to battery, RS− to load) and another sensing reverse current (RS+ to load, RS− to battery)-with outputs referenced to separate ADC channels for independent charge/discharge calculation.
What package type and dimensions does the MAX9610FELT+T use?
The MAX9610FELT+T uses a 6-pin μDFN package with exact dimensions of 1.0mm × 1.5mm × 0.8mm (L × W × H), pin pitch of 0.5mm, and bottom-mounted terminals. The top mark is "OS", and it complies with RoHS and lead-free soldering standards (reflow profile up to +260°C). Land pattern must follow Maxim document 21-0147.
MAX9610FELT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WFDFN
- 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:
- 6-µDFN (1.5x1)
MAX9610FELT+T FAQ
1.How can I place an order for MAX9610FELT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9610FELT+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 MAX9610FELT+T reliable?
The price and inventory of MAX9610FELT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9610FELT+T is usually 5 days.
3.What payment methods are accepted for MAX9610FELT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9610FELT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9610FELT+T?
MAX9610FELT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9610FELT+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 MAX9610FELT+T?
For technical support, including MAX9610FELT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9610FELT+T requirements.
6.How does Aetrix verify that MAX9610FELT+T is sourced from the original manufacturer or authorized distributors?
All MAX9610FELT+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 MAX9610FELT+T meets industry standards.
7.What is the process for return or replacement of MAX9610FELT+T?
All MAX9610FELT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9610FELT+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 MAX9610FELT+T part is unused and in its original packaging.
Return procedure for MAX9610FELT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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