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Analog Devices Inc./Maxim Integrated MAX9913EUB+T
- Part No.:
- MAX9913EUB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX9913EUB+T.pdf
- Description:
- IC OPAMP GP 2 CIRC 10UMAX/USOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,180
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Product details
Overview
The MAX9913EUB+T from Maxim Integrated is a dual, rail-to-rail input/output operational amplifier with independent active-low shutdown control per channel, optimized for ultra-low-power precision sensing in battery-powered systems. It delivers 200kHz gain-bandwidth, 4µA typical supply current per amplifier, 1pA typical input bias current, and operates from a single 1.8V to 5.5V supply - enabling use in glucose meter front-ends, portable medical instrumentation, and low-voltage data-acquisition circuits.
For engineers reviewing the MAX9913EUB+T datasheet, MAX9913EUB+T pinout, MAX9913EUB+T application, or MAX9913EUB+T equivalent, this page provides verified electrical parameters, dual-channel shutdown timing (2µs disable / 30µs enable), µMAX® package thermal derating (5.6mW/°C), rail-to-rail swing within 5mV of rails at 100kΩ load, and confirmed channel-to-channel isolation of 100dB at DC.
Technical Context
The MAX9913EUB+T integrates two independent BiCMOS op amps sharing a common VDD and VSS, each with dedicated SHDN inputs (SHDNA and SHDNB) that place respective outputs into high-impedance state while reducing total supply current to ≤1µA. Its parallel n- and p-channel input stage enables rail-to-rail common-mode range (VSS −0.05V to VDD +0.05V) and maintains ≥60dB CMRR across −40°C to +85°C.
Unity-gain stable with capacitive-load drive capability up to 30pF (or 250pF at AV ≥ 10V/V), the device uses internal compensation to achieve 0.1V/µs slew rate and 18µs settling time to 0.1% for 2V output steps. Shutdown logic thresholds are specified at VIL ≤ 0.8V and VIH ≥ 1.4V over full supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 200kHz - supports stable unity-gain buffering and low-frequency signal conditioning without oscillation |
| Supply Current per Amplifier | 4µA (typ) at +25°C - enables multi-year battery life in coin-cell–powered portable medical devices |
| Input Bias Current | 1pA (typ) - preserves accuracy in high-impedance sensor interfaces like electrochemical glucose sensors |
| Rail-to-Rail I/O Swing | Within 5mV of VSS/VDD at 100kΩ load - maximizes dynamic range in single-supply 1.8V–5.5V systems |
| Shutdown Supply Current | 1nA (typ) per channel enabled - reduces total quiescent draw to <1µA when both channels disabled |
| Input Offset Voltage | ±0.2mV (typ), ±5mV (max) over temperature - ensures <0.1% gain error in precision transimpedance amplifiers |
| Channel-to-Channel Isolation | 100dB at DC - prevents crosstalk between dual-sensor channels in differential measurement topologies |
Pinout & Package
The MAX9913EUB+T is housed in a 10-pin µMAX® package (package code U10+2), measuring 3mm × 3mm × 0.8mm with exposed pad for thermal enhancement. Pin pitch is 0.5mm; recommended land pattern per Maxim document 90-0330.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUTA | Amplifier A output | High-impedance during SHDNA = low; rail-to-rail capable with 5mV margin at 100kΩ |
| 2 - INA− | Inverting input, Channel A | Part of parallel CMOS input stage enabling VSS −0.05V to VDD +0.05V common-mode range |
| 3 - INA+ | Noninverting input, Channel A | 1pA bias current enables direct connection to high-Z electrodes or photodiode anodes |
| 4 - VSS | Negative supply (ground) | Common return for both amplifiers and shutdown logic; must be low-impedance |
| 5 - SHDNA | Active-low shutdown, Channel A | Pulls output high-Z and cuts bias current; VIH ≥ 1.4V, VIL ≤ 0.8V over full VDD range |
| 6 - INB+ | Noninverting input, Channel B | Electrically isolated from Channel A; 100dB DC isolation prevents signal coupling |
| 7 - INB− | Inverting input, Channel B | Matched offset voltage (±250µV max) enables precise differential sensing configurations |
| 8 - SHDNB | Active-low shutdown, Channel B | Independent control allows staggered power sequencing or selective channel disabling |
| 9 - OUTB | Amplifier B output | Same rail-to-rail performance as OUTA; output leakage ≤1000nA in shutdown |
| 10 - VDD | Positive supply (1.8V–5.5V) | Bypass with 0.1µF ceramic capacitor close to pin; PSRR = 95dB (typ) simplifies battery regulation |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent shutdown controls | Enables per-channel power gating in multi-sensor systems without PCB layout changes |
| Rail-to-rail input common-mode range | Extends 50mV beyond supply rails, supporting direct interfacing to mid-supply-biased sensors |
| Ultra-low 1pA input bias current | Maintains accuracy in >1GΩ source impedance applications such as pH or ion-selective electrodes |
| 200kHz GBW with unity-gain stability | Allows stable operation driving 30pF loads directly - eliminates need for external compensation |
| Low ±200µV input offset voltage (typ) | Reduces calibration overhead in portable test equipment requiring <0.05% absolute accuracy |
| 100dB channel-to-channel isolation | Supports simultaneous acquisition from adjacent electrodes in multi-analyte biosensors |
Applications
| Glucose Meter Front-End | Portable ECG Signal Conditioning |
|---|---|
Use Scenario: Amplifying current from three-electrode glucose sensor (WE/RE/CE) with mV-level resolution under 1.8V battery supply. IC Role / Device Role / Timing Role: Dual op amp configured as transimpedance amplifier (Channel A) and reference buffer (Channel B), with independent shutdown during measurement idle cycles. Use Value: 1pA input bias minimizes sensor polarization error; 4µA per amplifier extends CR2032 battery life beyond 2 years in intermittent-use devices. |
Use Scenario: Low-noise amplification and filtering of microvolt-level biopotential signals from dry electrodes in handheld ECG monitors. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer (Channel A) and right-leg drive buffer (Channel B), both powered from same 3.3V LDO. Use Value: Rail-to-rail output swing preserves full ADC input range; 400nV/√Hz input voltage noise ensures >80dB SNR at 100Hz with 10kΩ source impedance. |
| Handheld Multimeter Input Stage | IoT Environmental Sensor Hub |
Use Scenario: High-impedance voltage measurement (10MΩ input) and autoranging current shunt amplification in pocket-sized DMMs. IC Role / Device Role / Timing Role: Dual-channel configuration: Channel A as precision voltage follower, Channel B as programmable-gain current sense amplifier with shutdown during range switching. Use Value: ±5mV max input offset ensures <0.05% reading error at 200mV range; 200kHz GBW supports fast autoranging without settling delay. |
Use Scenario: Simultaneous analog conditioning for temperature, humidity, and gas sensors in battery-powered edge nodes. IC Role / Device Role / Timing Role: Two independent signal paths: Channel A buffers thermistor divider output, Channel B conditions electrochemical CO sensor current. Use Value: Independent SHDNA/SHDNB allow duty-cycled operation - only active sensor channel powered, cutting system quiescent current by 50%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4473AUA+ | Higher 10µA supply current, 1MHz GBW, no shutdown function | Lacks per-channel shutdown; unsuitable for aggressive duty-cycled sensor hubs | Select when higher bandwidth is required and continuous operation is acceptable |
| OPA2333AIDR | Zero-drift architecture, 17µA supply current, 350kHz GBW, no shutdown | Superior offset drift (0.02µV/°C) but higher current and no power gating | Prefer for DC-critical applications where long-term drift dominates over battery life |
Compared with MAX4473AUA+ and OPA2333AIDR, the MAX9913EUB+T uniquely combines dual-channel shutdown, 4µA quiescent current, and rail-to-rail operation in a 10-pin µMAX® package - making it the only option among the three for energy-constrained, multi-sensor portable medical devices requiring per-channel power control.
Availability
The MAX9913EUB+T is available at Aetrix Electronics and suitable for portable medical devices, handheld test equipment, and low-voltage data-acquisition systems requiring stable component supply across extended temperature ranges (−40°C to +85°C) and long production lifecycles.
Supply support for MAX9913EUB+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) designs precision analog and mixed-signal ICs for power, sensing, and interface applications in industrial, medical, and consumer systems.
The MAX9910–MAX9913 family was engineered specifically for ultra-low-power, high-accuracy signal conditioning in battery-operated portable instrumentation - emphasizing rail-to-rail operation, femtoampere input bias, and integrated shutdown at minimal silicon area.
FAQ
What is the maximum capacitive load the MAX9913EUB+T can drive without external isolation?
The MAX9913EUB+T is unity-gain stable driving up to 30pF directly. When configured for a minimum closed-loop gain of 10V/V, it supports up to 250pF. For loads exceeding these values - such as LCD panel drivers or long PCB traces - a series isolation resistor (e.g., 6.2kΩ) is required to maintain stability, as validated in Figure 2 of the MAX9913EUB+T datasheet. This behavior is consistent across both channels of the MAX9913EUB+T.
Does the MAX9913EUB+T require external power-supply decoupling?
Yes - the MAX9913EUB+T requires a 0.1µF ceramic capacitor placed as close as possible to the VDD pin (Pin 10) and connected to VSS (Pin 4). This bypassing is mandatory to suppress supply noise and ensure stable operation, especially during shutdown transitions. Failure to implement proper decoupling may cause increased output noise or erratic shutdown timing in the MAX9913EUB+T.
How does the shutdown functionality work on the MAX9913EUB+T?
The MAX9913EUB+T features two independent active-low shutdown inputs: SHDNA (Pin 5) controls Channel A, and SHDNB (Pin 8) controls Channel B. Driving either pin low disables its respective amplifier, placing the output in high-impedance state and reducing that channel's supply current to ≤1µA. Both channels must be disabled to achieve total device current ≤1µA. The MAX9913EUB+T exits shutdown in 30µs (typ) and enters in 2µs (typ).
Can the MAX9913EUB+T operate from a 1.8V supply while maintaining rail-to-rail output swing?
Yes - the MAX9913EUB+T is fully specified from 1.8V to 5.5V. At VDD = 1.8V, it delivers rail-to-rail output swing within 90mV of both rails at 5kΩ load and within 5mV at 100kΩ load, per Electrical Characteristics Table (VOL/VOH, RL = 100kΩ). This performance is guaranteed over the full −40°C to +85°C temperature range, making the MAX9913EUB+T suitable for deep-discharge battery operation.
What is the input common-mode voltage range for the MAX9913EUB+T?
The MAX9913EUB+T supports an input common-mode voltage range from VSS − 0.05V to VDD + 0.05V across −40°C to +85°C, verified by CMRR testing. This extended range enables direct interfacing to sensors biased beyond the supply rails - for example, connecting to a mid-supply reference (VMID) in glucose meter circuits without level-shifting. This specification applies identically to both amplifier channels in the MAX9913EUB+T.
MAX9913EUB+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.1V/µs
- Gain Bandwidth Product:
- 200 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 7µA (x2 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-uMAX/uSOP
MAX9913EUB+T FAQ
1.How can I place an order for MAX9913EUB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9913EUB+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 MAX9913EUB+T reliable?
The price and inventory of MAX9913EUB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9913EUB+T is usually 5 days.
3.What payment methods are accepted for MAX9913EUB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9913EUB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9913EUB+T?
MAX9913EUB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9913EUB+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 MAX9913EUB+T?
For technical support, including MAX9913EUB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9913EUB+T requirements.
6.How does Aetrix verify that MAX9913EUB+T is sourced from the original manufacturer or authorized distributors?
All MAX9913EUB+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 MAX9913EUB+T meets industry standards.
7.What is the process for return or replacement of MAX9913EUB+T?
All MAX9913EUB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9913EUB+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 MAX9913EUB+T part is unused and in its original packaging.
Return procedure for MAX9913EUB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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