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Analog Devices Inc./Maxim Integrated MAX9610TEXK+
- Part No.:
- MAX9610TEXK+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX9610TEXK+.pdf
- Description:
- MAX9610 1 MICROAMPS, UDFN/SC70,
- Quantity:
- Payment:
- Shipping:
Inventory:1,010
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Product details
Overview
The MAX9610TEXK+ from Maxim Integrated is a unidirectional high-side current-sense amplifier in a 5-pin SC70 package, featuring 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 portable power management systems.
For engineers reviewing the MAX9610TEXK+ datasheet, MAX9610TEXK+ pinout, MAX9610TEXK+ application, or MAX9610TEXK+ equivalent, key selection criteria include ultra-low quiescent current for battery runtime extension, tight offset and gain accuracy for sub-50mV full-scale sensing, SC70 footprint constraints, and compatibility with single-cell Li+ battery voltage profiles (1.6V–5.5V).
Technical Context
The MAX9610TEXK+ uses a BiCMOS-based current-mirror architecture where an internal pFET sources current through matched gain resistors (R1 = 400Ω, ROUT = 10kΩ), enabling precise amplification of the differential voltage across an external sense resistor without requiring a separate VCC supply - its supply is derived directly from the sensed common-mode voltage at RS+ and RS−.
This architecture supports unidirectional high-side sensing only, with output swing limited by VRS+ − VSENSE − VOH (≤0.2V), and guarantees stable operation across −40°C to +85°C with CMRR ≥80dB (1.6V–5.5V, −40°C to +85°C) and small-signal bandwidth of 170kHz (G = 25).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 25V/V - sets output scaling for 25mV–50mV full-scale sense voltage, enabling accurate low-drop current measurement. |
| Input Offset Voltage | ≤500μV (max) - ensures ≤12.5mV output error at 25V/V gain, critical for <50mV VSENSE applications. |
| Gain Error | ≤0.5% (max) - contributes ≤0.125mV error per mV of VSENSE, supporting ±0.5% total system current accuracy. |
| Quiescent Supply Current | 1μA (max) - extends battery life in always-on monitoring circuits; measured as total current into RS+ and RS− pins. |
| Common-Mode Input Range | +1.6V to +5.5V - matches single-cell Li+ battery operating range (2.9V–4.2V), eliminating need for level-shifting. |
| Output Resistance | 7.0–13.2kΩ - defines load drive capability; compatible with high-impedance ADC inputs without buffering. |
| Small-Signal Bandwidth | 170kHz - supports fast transient detection in USB port or PDA power rails without phase lag. |
Pinout & Package
The MAX9610TEXK+ is housed in a 5-pin SC70 package (2.0mm × 2.2mm × 0.95mm body height), RoHS-compliant and lead-free. Pin 1 is marked with a dot; Pin 2 is NC (no internal connection); all pins are surface-mount with gull-wing leads.
| 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. |
| NC (Pin 2) | No connection | Internally unconnected; must remain floating - no PCB trace or solder mask opening required. |
| OUT (Pin 3) | Voltage output | Amplified VSENSE × 25; drives ADC or comparator with 7–13.2kΩ source impedance and ≤70mV low-level swing. |
| RS− (Pin 4) | Load-side sense node | Kelvin connection point to low-side of external RSENSE; referenced to GND for differential measurement. |
| RS+ (Pin 5) | Power-side sense node | Kelvin connection point to high-side of RSENSE; supplies device operating current and defines common-mode voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1μA (max) enables multi-year battery life in always-on current monitoring for PDAs and USB ports. |
| Low input offset voltage | ≤500μV (max) allows use of smaller RSENSE (e.g., 10mΩ at 5A) while maintaining <1% error at 25mV VSENSE. |
| High common-mode rejection | ≥80dB CMRR over full temperature and voltage range suppresses noise from noisy DC-DC converter outputs. |
| Self-powered architecture | No external VCC required - powered directly from sensed rail (RS+/RS−), simplifying layout in space-constrained SC70 designs. |
| SC70 footprint compatibility | 5-pin SC70 (2.0mm × 2.2mm) enables drop-in replacement for legacy current-sense solutions without board rework. |
Applications
| Smartphone Battery Monitoring | USB 2.0 Port Current Protection |
|---|---|
|
Use Scenario: Real-time charge/discharge current tracking in slim smartphones using single-cell Li+ batteries. IC Role / Device Role / Timing Role: High-side unidirectional current-sense amplifier converting milliohm-resistor voltage drop into scaled analog output for fuel-gauge MCU. Use Value: 1μA quiescent current minimizes standby drain; 500μV offset enables accurate 0.1A–5A range with 20mΩ RSENSE and no calibration. |
Use Scenario: Overcurrent detection and reporting in host-side USB 2.0 downstream ports. IC Role / Device Role / Timing Role: High-side monitor feeding ADC input to USB controller for dynamic load management and fault flagging. Use Value: 170kHz bandwidth captures fast short-circuit transients; 1.6V–5.5V common-mode range covers USB VBUS tolerance (4.4–5.25V) and brownout conditions. |
| Li+ PDA Power Management | Portable Camera Flash Charging Control |
|
Use Scenario: Precision current measurement during battery charging and system load profiling in handheld PDAs. IC Role / Device Role / Timing Role: Unidirectional high-side amplifier interfacing with 12-bit SAR ADC to compute real-time power consumption. Use Value: 0.5% gain error ensures <±0.5% current accuracy across temperature; SC70 size fits tight front-end PCB areas near battery connector. |
Use Scenario: Monitoring charging current into high-voltage capacitor banks for xenon flash modules in compact digital cameras. IC Role / Device Role / Timing Role: High-side current sensor providing feedback to charge controller IC for constant-current regulation. Use Value: 5.5V max common-mode withstands flash charger output ripple; 25V/V gain optimizes 30–50mV VSENSE for 1–2A charge currents with minimal IR loss. |
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 |
|---|---|---|---|
| MAX4080TASA+ | 20V/V gain, 100μV max VOS, 2.7–76V common-mode, SO8 package | Supports wider input range (e.g., 12V systems); higher accuracy but larger footprint and higher ICC (75μA) | Select when >5.5V common-mode or <100μV offset is required; not SC70-compatible. |
| INA21xAIDCKR | 20V/V or 50V/V gain, 100μV max VOS, 2.7–26V common-mode, SC70-6 | Lower offset and wider voltage range; requires external VCC; 6-pin SC70 vs. 5-pin | Choose for tighter offset specs in 3.3V/5V systems; pin count and supply architecture differ - not drop-in. |
Compared with MAX4080TASA+ and INA21xAIDCKR, the MAX9610TEXK+ offers the lowest quiescent current (1μA vs. 75μA/65μA) and smallest SC70 footprint (5-pin), making it optimal for ultra-low-power, space-constrained Li+ portable devices - though it trades off common-mode range and offset voltage for these advantages.
Availability
The MAX9610TEXK+ is available at Aetrix Electronics and suitable for smartphone battery monitoring, USB 2.0 port protection, and Li+ PDA power management requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MAX9610TEXK+ 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 industrial, communications, and consumer applications.
The MAX9610TEXK+ belongs to Maxim's precision current-sense amplifier product line, designed specifically for high-accuracy, ultra-low-power monitoring of battery and power-rail currents in portable Li+-powered electronics.
FAQ
What is the maximum common-mode voltage the MAX9610TEXK+ can handle?
The MAX9610TEXK+ supports a guaranteed common-mode input range of +1.6V to +5.5V across −40°C to +85°C. This range aligns precisely with single-cell lithium-ion battery operation (2.9V–4.2V), and the absolute maximum rating for RS+ and RS− is +6V - exceeding typical Li+ end-of-charge voltage. Operation above 5.5V is not specified and may degrade accuracy or reliability.
Does the MAX9610TEXK+ require an external power supply?
No, the MAX9610TEXK+ does not require an external VCC supply. It is self-powered via the sensed common-mode voltage applied to the RS+ and RS− pins. The device draws its operating current directly from those terminals, simplifying system design and reducing component count in battery-powered applications where the MAX9610TEXK+ is deployed.
What is the function of the NC pin on the MAX9610TEXK+ SC70 package?
Pin 2 of the MAX9610TEXK+ SC70 package is labeled NC (No Connection) and is not internally connected to any circuitry. It must remain electrically floating - no trace, pad, or solder should connect to this pin. Leaving it unconnected avoids parasitic coupling and ensures specified performance, as confirmed in the official Maxim pin description table.
Can the MAX9610TEXK+ be used for bidirectional current sensing?
No, the MAX9610TEXK+ is a unidirectional high-side current-sense amplifier and cannot measure reverse (discharge vs. charge) current polarity. While the datasheet shows a conceptual bidirectional application using two MAX9610 devices, the MAX9610TEXK+ itself only amplifies positive VSENSE (RS+ > RS−). For true bidirectional sensing, a dedicated device like the MAX4008 or INA226 is required.
What is the output voltage swing limitation of the MAX9610TEXK+?
The MAX9610TEXK+ output swing is constrained by VOUT(MAX) = VRS+(MAX) − VSENSE(MAX) − VOH, where VOH ≤ 0.2V. At minimum VRS+ = 1.6V and full-scale VSENSE = 50mV, VOUT cannot exceed ~1.38V. At VRS+ = 5.5V, maximum usable VOUT is ~5.25V. This headroom requirement must be accounted for when selecting RSENSE and gain to avoid clipping in the MAX9610TEXK+ output stage.
MAX9610TEXK+ 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
MAX9610TEXK+ FAQ
1.How can I place an order for MAX9610TEXK+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9610TEXK+ 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+ reliable?
The price and inventory of MAX9610TEXK+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9610TEXK+ is usually 5 days.
3.What payment methods are accepted for MAX9610TEXK+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9610TEXK+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9610TEXK+?
MAX9610TEXK+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9610TEXK+ 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+?
For technical support, including MAX9610TEXK+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9610TEXK+ requirements.
6.How does Aetrix verify that MAX9610TEXK+ is sourced from the original manufacturer or authorized distributors?
All MAX9610TEXK+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX9610TEXK+?
All MAX9610TEXK+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX9610TEXK+, 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+ part is unused and in its original packaging.
Return procedure for MAX9610TEXK+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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