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Analog Devices Inc./Maxim Integrated MAX9610FEXK+T
- Part No.:
- MAX9610FEXK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX9610FEXK+T.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
The MAX9610FEXK+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 MAX9610FEXK+T datasheet, MAX9610FEXK+T pinout, MAX9610FEXK+T application, or MAX9610FEXK+T equivalent, this device is selected for ultra-low-power, high-accuracy battery current sensing where minimal voltage drop (<50mV full-scale), SC70 footprint (2mm × 2.2mm), and guaranteed -40°C to +85°C operation are required.
Technical Context
The MAX9610FEXK+T uses a BiCMOS-based current-mirror architecture with matched internal gain resistors (R1 = 200Ω, ROUT = 10kΩ) to achieve precise 50V/V gain. Its input stage accepts common-mode voltages up to 5.5V without external supply, eliminating need for level-shifting circuitry when monitoring single-cell Li+ batteries.
It features rail-to-rail output swing referenced to RS−, with VOH ≤ 0.2V and VOL ≤ 70mV at TA = +25°C, enabling direct interface to 1.8V–3.3V ADCs. Small-signal bandwidth is 110kHz and output settling time is 35μs to 1%, supporting fast transient current detection in USB port and PDA power management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 50V/V - scales 20mV–60mV sense voltage to 1V–3V output for optimal ADC utilization |
| Input Offset Voltage (max) | 500μV - enables accurate measurement of ≤25mV VSENSE without calibration |
| Gain Error (max) | 0.5% - ensures ±0.5% full-scale current accuracy across -40°C to +85°C |
| Supply Current (max) | 1μA - extends battery life in always-on monitoring circuits (e.g., battery fuel gauging) |
| Common-Mode Input Range | +1.6V to +5.5V - covers full Li+ battery range (2.9V discharge to 4.2V charge) |
| Small-Signal Bandwidth | 110kHz - supports dynamic load current tracking in USB 2.0 power delivery |
| Output Resistance | 7.0–13.2kΩ - compatible with high-impedance ADC inputs without buffer |
Pinout & Package
The MAX9610FEXK+T is housed in a 5-pin SC70 package (2.0mm × 2.2mm × 0.95mm body height), RoHS-compliant and tape-and-reel packaged (T suffix). Pin 1 is marked with a dot; pin 2 is NC (no internal connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Return path for internal bias and output stage; must be low-impedance Kelvin-connected to system ground |
| RS− (Pin 2) | Load-side sense input | Connects to low-side terminal of sense resistor; defines output reference point (VOUT measured relative to RS−) |
| OUT (Pin 3) | Voltage output | Delivers VOUT = 50 × (VRS+ − VRS−); drives ADC or comparator directly without buffering |
| NC (Pin 4) | No connection | Internally unconnected; must be left floating or tied to GND per layout guidelines |
| RS+ (Pin 5) | Power-side sense input | Connects to high-side terminal of sense resistor; also serves as supply node (no separate VCC) |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1μA max enables >1-year battery runtime in always-on current monitoring (e.g., smart battery packs) |
| Low input offset voltage | 500μV max allows use of 10mΩ–50mΩ sense resistors while maintaining <1% total error at 1A load |
| Wide common-mode range | +1.6V to +5.5V eliminates need for external level shifters when monitoring Li+ battery voltage directly |
| Voltage-output architecture | Direct interface to SAR or delta-sigma ADCs without current-to-voltage conversion stage |
| SC70 footprint | 2.0mm × 2.2mm area saves PCB space in thin mobile devices (e.g., ultraportable cameras, PDAs) |
Applications
| USB Power Delivery Monitoring | Lithium-Ion Battery Fuel Gauging |
|---|---|
|
Use Scenario: Real-time current measurement on 5V USB downstream ports to enforce power budget limits and detect overcurrent faults. IC Role / Device Role / Timing Role: High-side current-sense amplifier measuring voltage drop across inline sense resistor; outputs proportional analog voltage to host microcontroller ADC. Use Value: Enables compliance with USB Battery Charging v1.2 spec by detecting >1.5A draw within 35μs (settling time), preventing port shutdown during burst loads. |
Use Scenario: Continuous battery discharge/charge current monitoring in handheld medical devices requiring >1000-cycle battery life estimation. IC Role / Device Role / Timing Role: Unidirectional high-side sensor feeding coulomb counter IC or MCU ADC; operates across full Li+ voltage range (2.9V–4.2V). Use Value: 500μV offset and 0.5% gain error ensure ±1% state-of-charge accuracy over temperature, critical for FDA-cleared battery safety thresholds. |
| Portable Camera Power Management | PDA System Power Supervision |
|
Use Scenario: Monitoring flash LED driver current to prevent thermal runaway and extend LED lifetime in compact digital cameras. IC Role / Device Role / Timing Role: High-side current amplifier placed between battery and flash boost converter; provides analog feedback to PWM controller. Use Value: 110kHz bandwidth captures rapid flash pulse edges (≤10μs rise time), enabling closed-loop current regulation during 100ms strobe events. |
Use Scenario: Dual-rail current monitoring (3.3V core + 5V I/O) in legacy PDA designs to trigger low-battery warnings and graceful shutdown. IC Role / Device Role / Timing Role: Two MAX9610FEXK+T units deployed on separate rails; outputs digitized by 10-bit MCU ADC with 10ksps sampling. Use Value: 1μA quiescent current minimizes parasitic drain during sleep mode, extending standby time to >14 days on single 1200mAh Li+ cell. |
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 |
|---|---|---|---|
| MAX4008AUB+T | Same 50V/V gain, but 2.5μA ICC (2.5× higher), 1.5mV VOS (3× higher), SC70-5 package | Higher offset limits resolution below 50mA; higher ICC reduces battery life in always-on monitoring | Select only if MAX9610FEXK+T is unavailable and 1.5mV VOS is acceptable for target full-scale current |
| INA214AIDCKR | 50V/V gain, 100μA ICC (100× higher), 100μV VOS (5× lower), SC70-6 package with VCC pin | Requires separate 2.7–26V VCC supply; unsuitable for direct Li+ monitoring without regulator | Choose only when wider 2.7–26V common-mode range is needed and extra supply rail is available |
Compared with MAX4008AUB+T, the MAX9610FEXK+T delivers 3× better offset performance and 2.5× lower supply current-critical for sub-50mA sensing and multi-year battery life. Against INA214AIDCKR, it eliminates external VCC but trades 100× higher ICC for direct single-supply operation on the monitored rail.
Availability
The MAX9610FEXK+T is available at Aetrix Electronics and suitable for USB power delivery monitoring, lithium-ion battery fuel gauging, and portable camera power management requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX9610FEXK+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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX9610 family was designed specifically for ultra-low-power, high-accuracy current sensing in Li+-powered portable electronics-prioritizing minimal quiescent current, small footprint, and wide common-mode operation without auxiliary supplies.
FAQ
What is the maximum common-mode voltage the MAX9610FEXK+T can handle?
The MAX9610FEXK+T supports a guaranteed input common-mode voltage range of +1.6V to +5.5V across the full -40°C to +85°C operating temperature range. This allows direct monitoring of single-cell lithium-ion batteries from deep discharge (≈2.9V) through full charge (4.2V) without external level-shifting circuitry. The absolute maximum rating for RS+ and RS− pins is +6V, but operation beyond +5.5V is not specified or guaranteed.
Does the MAX9610FEXK+T require an external power supply?
No, the MAX9610FEXK+T does not require a separate VCC supply. Its power is derived directly from the monitored common-mode voltage applied to the RS+ pin. The device draws current only from the RS+ and RS− nodes, with total supply current ≤1μA. This self-powered architecture simplifies design in battery-operated systems where adding a dedicated supply rail would increase cost and board area.
What is the output voltage swing capability of the MAX9610FEXK+T?
The MAX9610FEXK+T output swings relative to the RS− pin. At TA = +25°C, VOH (voltage from RS− to OUT) is ≤0.2V and VOL is ≤70mV. Therefore, for a 3.6V common-mode input, the output can reach up to ≈3.4V and down to ≈0.07V. This rail-to-RS− behavior ensures compatibility with 1.8V and 3.3V ADC references without level-shifting, provided the ADC's input common-mode range accommodates the output swing.
Can the MAX9610FEXK+T be used for bidirectional current sensing?
No, the MAX9610FEXK+T is a unidirectional high-side current-sense amplifier optimized for sensing current flow from RS+ to RS− only. It cannot accurately measure reverse current (discharge vs. charge direction) because its internal architecture lacks dual-polarity output capability. For true bidirectional sensing in battery applications, a dedicated bidirectional amplifier such as the MAX4008 or MAX9611 is required instead of the MAX9610FEXK+T.
What is the recommended sense resistor value for use with the MAX9610FEXK+T?
For the MAX9610FEXK+T (50V/V gain), a typical full-scale sense voltage of 60mV is recommended to maximize signal-to-noise ratio while minimizing IR drop. With 60mV VSENSE, full-scale current equals 60mV ÷ RSENSE. Common values include 20mΩ (3A full-scale), 50mΩ (1.2A), or 100mΩ (0.6A). The precision 500μV offset allows accurate measurement even at 10% of full scale (e.g., 0.06V output for 6mV VSENSE), supporting low-current sleep-mode monitoring.
MAX9610FEXK+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:
- 110 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
MAX9610FEXK+T FAQ
1.How can I place an order for MAX9610FEXK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9610FEXK+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 MAX9610FEXK+T reliable?
The price and inventory of MAX9610FEXK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9610FEXK+T is usually 5 days.
3.What payment methods are accepted for MAX9610FEXK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9610FEXK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9610FEXK+T?
MAX9610FEXK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9610FEXK+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 MAX9610FEXK+T?
For technical support, including MAX9610FEXK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9610FEXK+T requirements.
6.How does Aetrix verify that MAX9610FEXK+T is sourced from the original manufacturer or authorized distributors?
All MAX9610FEXK+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 MAX9610FEXK+T meets industry standards.
7.What is the process for return or replacement of MAX9610FEXK+T?
All MAX9610FEXK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9610FEXK+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 MAX9610FEXK+T part is unused and in its original packaging.
Return procedure for MAX9610FEXK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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