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Analog Devices Inc./Maxim Integrated MAX9610FEXK+
- Part No.:
- MAX9610FEXK+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX9610FEXK+.pdf
- Description:
- MAX9610 1 MICROAMPS, UDFN/SC70,
- Quantity:
- Payment:
- Shipping:
Inventory:537
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Product details
Overview
The MAX9610FEXK+ 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 from 1.6V to 5.5V common-mode input range and delivers voltage output for precision Li+-battery current monitoring in space-constrained portable systems.
For engineers reviewing the MAX9610FEXK+ datasheet, MAX9610FEXK+ pinout, MAX9610FEXK+ application, or MAX9610FEXK+ equivalent, this device supports accurate full-scale sensing at 25mV–50mV VSENSE with minimal IR drop, enables ultra-low-power battery runtime extension, and fits SC70-5 footprint for handheld power management designs.
Technical Context
The MAX9610FEXK+ uses a BiCMOS-based current-mirror architecture where internal matched resistors (R1 = 200Ω, ROUT = 10kΩ) set precise 50V/V gain. Its input stage operates directly from the sensed rail-no separate VCC-so VOUT swing depends on RS+ minimum voltage minus VOH and VSENSE.
It achieves 80dB–104dB CMRR across 1.6V–5.5V common-mode range and delivers 110kHz small-signal bandwidth with 35μs settling time to 1%. The SC70-5 package has no internal connection on Pin 2, enabling simplified layout while maintaining Kelvin-sense integrity via dedicated RS+ and RS− terminals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 50V/V - sets output voltage to 50× sensed differential voltage across RSENSE, enabling 25mV full-scale sensing with 1.25V output swing at 3.6V RS+ |
| Input Offset Voltage | ±500μV max - contributes ≤25μV error to 50mV VSENSE full-scale, supporting ±0.5% total measurement accuracy at low currents |
| Gain Error | ±0.5% max - ensures slope deviation remains under ±0.25mV per 50mV VSENSE, critical for battery fuel-gauge linearity |
| Supply Current | 1μA max - draws negligible current from monitored rail, extending single-cell Li+ battery life by >100 hours in standby |
| Common-Mode Range | 1.6V to 5.5V - fully covers Li+ battery operating range (2.9V–4.2V), allowing direct placement between battery and load without level-shifting |
| Small-Signal Bandwidth | 110kHz - supports fast transient current detection in USB port overcurrent protection and PDA dynamic load switching |
| Output Resistance | 7.0–13.2kΩ - interfaces directly with 12-bit SAR ADCs with ≤100pF input capacitance without buffer amplification |
Pinout & Package
The MAX9610FEXK+ is housed in a 5-pin SC70 package (2.0mm × 2.2mm × 0.95mm body height) with exposed pad not connected internally. Pin 2 is No Connection (N.C.), eliminating routing conflict and simplifying PCB layout for high-accuracy Kelvin sensing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for output stage and internal bias; must connect to low-impedance system ground near sense resistor |
| 2 | N.C. | No internal connection - left floating or grounded per layout convenience; no electrical function |
| 3 | OUT | Voltage output terminal delivering 50×(RS+ − RS−); drives ADC input or comparator with 10kΩ source impedance |
| 4 | RS− | Load-side Kelvin sense node; connects to low-side of external RSENSE to reject trace resistance errors |
| 5 | RS+ | Power-side Kelvin sense node; connects to high-side of RSENSE and serves as supply reference (no separate VCC) |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1μA max enables >1-year battery shelf life in always-on portable devices without compromising sensing readiness |
| Low input offset voltage | 500μV max allows use of 10mΩ–50mΩ sense resistors while maintaining sub-1% error at 100mA load current |
| Wide common-mode input range | 1.6V–5.5V matches Li+ battery voltage profile end-to-end, eliminating need for external level shifters or supply rails |
| Fixed 50V/V gain | Optimized for 25mV–50mV full-scale VSENSE, minimizing I²R loss and thermal drift in compact handheld PCBs |
| SC70-5 package | 2.0mm × 2.2mm footprint saves >40% board area vs. SOIC-8 alternatives while supporting automated optical inspection |
Applications
| Smartphone Battery Monitoring | USB 2.0 Port Current Protection |
|---|---|
|
Use Scenario: Real-time battery discharge current tracking during video playback and cellular transmission in smartphones. IC Role / Device Role / Timing Role: High-side current-sense amplifier converting mV-level RSENSE voltage to scalable analog output for fuel-gauge MCU ADC. Use Value: 500μV offset enables ±2mA accuracy at 2A load; 1μA ICC extends standby time by 12+ hours per 3000mAh battery. |
Use Scenario: Overcurrent detection in host-side USB 2.0 ports to disable VBUS within 100μs upon >500mA fault. IC Role / Device Role / Timing Role: Fast-settling (35μs) current monitor feeding comparator threshold circuit for hardware-level port shutdown. Use Value: 110kHz bandwidth captures USB inrush transients; 1.6V–5.5V CM range accommodates VBUS tolerance without external regulators. |
| Digital Camera Power Management | PDA System-Level Load Tracking |
|
Use Scenario: Measuring flash LED driver current and main SoC dynamic load in compact digital cameras. IC Role / Device Role / Timing Role: Unidirectional high-side sensor isolating camera subsystem current from shared Li+ battery rail. Use Value: SC70-5 size fits 4-layer camera flex PCB; 50V/V gain scales 30mV sense drop to 1.5V ADC input, avoiding signal attenuation. |
Use Scenario: Simultaneous monitoring of processor, display, and wireless module currents in legacy PDAs. IC Role / Device Role / Timing Role: Single-chip solution replacing discrete op-amp + reference for multi-rail current telemetry. Use Value: 0.5% gain error ensures consistent calibration across 3.3V/5V rails; -40°C to +85°C rating supports industrial PDA deployment. |
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 |
|---|---|---|---|
| MAX4008AESA+ | 200kHz bandwidth, 2.5μA ICC, 100μV VOS, SC70-5 package | Better offset and speed but higher supply current; requires tighter layout for 100μV performance | Select when <100μV offset is mandatory and 1.5× ICC budget is acceptable |
| INA213AIDCKR | 2.7V–26V CM range, 250μA ICC, 100μV VOS, SC70-6 package | Wider voltage range suits multi-cell batteries; 250μA ICC limits ultra-low-power use cases | Select for 2–4 cell Li+ systems or when 26V tolerance is required for adapter input monitoring |
Compared with MAX4008AESA+ and INA213AIDCKR, the MAX9610FEXK+ uniquely balances 1μA ICC, 500μV VOS, and 5.5V upper CM limit-making it optimal for single-cell Li+ portable devices where battery life and board area are co-constrained.
Availability
The MAX9610FEXK+ is available at Aetrix Electronics and suitable for smartphone battery monitoring, USB port protection, digital camera power management, and PDA system-level load tracking requiring stable component supply across high-volume consumer electronics production.
Supply support for MAX9610FEXK+ 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) designs precision analog, mixed-signal, and power-management ICs for demanding industrial, automotive, and portable applications.
The MAX9610FEXK+ belongs to Maxim's high-accuracy current-sense amplifier product line, engineered specifically for ultra-low-power, space-constrained Li+-battery systems where sensing fidelity and energy efficiency are jointly critical.
FAQ
What is the maximum common-mode input voltage supported by the MAX9610FEXK+?
The MAX9610FEXK+ supports a maximum common-mode input voltage of +5.5V. This specification is guaranteed over the full -40°C to +85°C operating temperature range and enables direct interfacing with fully charged single-cell lithium-ion batteries (4.2V) while maintaining margin for transient spikes. The device does not require an external VCC supply-the RS+ pin serves as both input and power reference.
Does the MAX9610FEXK+ require external passive components for basic operation?
No, the MAX9610FEXK+ requires only an external current-sense resistor (RSENSE) for core functionality. Its internal matched resistors set the 50V/V gain, and no external gain-setting resistors, compensation capacitors, or bypass capacitors are needed for stable DC or low-frequency AC operation. An optional 1nF ceramic capacitor between OUT and GND may be added only if sampling artifacts occur in high-speed ADC acquisition.
How does the MAX9610FEXK+ achieve 1μA quiescent current while maintaining precision performance?
The MAX9610FEXK+ achieves 1μA quiescent current through BiCMOS process optimization and adaptive biasing that minimizes static current in the input stage and current mirror without degrading offset or gain matching. This design allows the device to maintain ±500μV VOS and ±0.5% gain error specifications while drawing less than 1μA from the monitored rail-critical for extending battery runtime in always-on portable devices.
Can the MAX9610FEXK+ be used in bidirectional current sensing applications?
The MAX9610FEXK+ is a unidirectional high-side current-sense amplifier and cannot measure reverse current flow. However, bidirectional capability can be implemented using two MAX9610FEXK+ devices-one configured for charge path and one for discharge path-with outputs referenced to separate ADC channels. This approach preserves the device's 1μA ICC and 500μV VOS advantages while enabling full battery charge/discharge telemetry.
What is the function of Pin 2 (N.C.) on the MAX9610FEXK+ SC70-5 package?
Pin 2 on the MAX9610FEXK+ is designated N.C. (No Connection) and is not bonded internally. It may be left floating or tied to GND based on PCB layout convenience-neither choice affects electrical performance. This pin exists for mechanical symmetry and manufacturing compatibility with other SC70-5 variants in Maxim's portfolio, and its absence of internal connectivity simplifies routing near the sensitive RS+ and RS− Kelvin nodes.
MAX9610FEXK+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Bulk
- 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
MAX9610FEXK+ FAQ
1.How can I place an order for MAX9610FEXK+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9610FEXK+ 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+ reliable?
The price and inventory of MAX9610FEXK+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9610FEXK+ is usually 5 days.
3.What payment methods are accepted for MAX9610FEXK+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9610FEXK+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9610FEXK+?
MAX9610FEXK+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9610FEXK+ 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+?
For technical support, including MAX9610FEXK+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9610FEXK+ requirements.
6.How does Aetrix verify that MAX9610FEXK+ is sourced from the original manufacturer or authorized distributors?
All MAX9610FEXK+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX9610FEXK+?
All MAX9610FEXK+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX9610FEXK+, 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+ part is unused and in its original packaging.
Return procedure for MAX9610FEXK+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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