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Analog Devices Inc./Maxim Integrated MAX9646EBS+TG45
- Part No.:
- MAX9646EBS+TG45
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 4-WFBGA, CSPBGA
- Datasheet:
-
MAX9646EBS+TG45.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 4UCSP
- Quantity:
- Payment:
- Shipping:
Inventory:7,303
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Product details
Overview
MAX9646EBS+TG45 from Maxim Integrated is a nanoPower single comparator with integrated 0.2V precision reference, noninverting input configuration, and push-pull output stage. It operates from 1.0V to 5.5V supply, consumes ≤700nA supply current, features 15µs propagation delay, and is housed in a 1mm × 1mm × 0.6mm 4-bump UCSP package. It enables ultra-low-power voltage monitoring in space-constrained battery-powered systems such as portable medical devices.
For engineers reviewing the MAX9646EBS+TG45 datasheet, MAX9646EBS+TG45 pinout, MAX9646EBS+TG45 application, or MAX9646EBS+TG45 equivalent, key selection criteria include its push-pull output eliminating external pullup resistors, guaranteed ±1% reference accuracy over temperature, -0.3V to +5.5V rail-to-rail input range independent of VCC, and operation down to 1V supply for compatibility with sub-1.2V microcontroller I/O rails.
Technical Context
The MAX9646EBS+TG45 implements a BiCMOS input stage enabling input voltages up to +5.5V even when VCC = 0V, supporting flexible power sequencing and high-impedance monitoring during system sleep modes. Its internal 0.2V reference is trimmed to ±1% accuracy at +25°C and exhibits 6µV/°C tempco, ensuring stable trip points across -40°C to +85°C.
The push-pull output delivers VOH ≥ VCC – 0.08V at 15µA source current and VOL ≤ 0.2V at 50µA sink current (VCC = 1.0V), directly interfacing with 1.0V–5.5V logic without level-shifting. Propagation delay remains tightly controlled at 15µs (typ) with ±100mV overdrive and shows minimal variation across temperature and supply voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.0V to 5.5V - supports direct connection to modern low-voltage microcontrollers and single-cell Li-ion/Li-Po battery rails. |
| Supply Current (max) | 700nA - enables multi-year battery life in always-on sensing applications such as wearable health monitors. |
| Input Voltage Range | -0.3V to +5.5V - allows monitoring of signals beyond VCC (e.g., battery voltage, sensor outputs) without external attenuation or clamping. |
| Reference Voltage | 200mV ±1% (at +25°C), ±3.5% (over -40°C to +85°C) - provides precise, factory-trimmed threshold for accurate low-voltage detection. |
| Propagation Delay | 15µs - ensures timely response to fast-changing analog events while maintaining ultra-low power consumption. |
| Output Type | Push-pull - eliminates need for external pullup resistor, reducing BOM count and PCB area in compact designs. |
| Operating Temperature | -40°C to +85°C - qualified for industrial and portable consumer environments including handheld diagnostics equipment. |
Pinout & Package
MAX9646EBS+TG45 is packaged in a 4-bump UCSP (Ultra Compact Silicon Package) measuring 1.0mm × 1.0mm × 0.6mm with bumps on the bottom side. The package uses solder bump interconnects and requires standard reflow profile (peak 235°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | OUT | Push-pull output - actively drives high or low; compatible with 1.0V–5.5V logic without external components. |
| A2 | IN | Noninverting input - accepts analog signals from -0.3V to +5.5V regardless of VCC; high-impedance (>100GΩ) even when powered down. |
| B1 | VCC | Positive supply input - bypass to GND with 0.1µF capacitor near the bump for stable operation during output transitions. |
| B2 | GND | Ground reference - shared return path for supply, reference, and output; must be low-impedance for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| 1mm × 1mm UCSP footprint | Occupies same board area as two 0402 resistors - enables integration into wearables and hearing aids where every 0.1mm² matters. |
| Internal 0.2V reference | Factory-trimmed to ±1% at +25°C with 6µV/°C tempco - removes need for external precision reference IC or resistor divider network. |
| Rail-to-rail input beyond VCC | Accepts inputs up to +5.5V with VCC = 0V - supports hot-swap detection and battery voltage monitoring without level shifters. |
| Power-down input impedance | Maintains >100GΩ input resistance when VCC = 0V - prevents signal loading during deep-sleep modes in IoT edge nodes. |
| RF-immune input stage | On-chip filtering suppresses RF interference from cellular/Wi-Fi bands - eliminates need for external RC filters in noisy RF environments. |
Applications
| Portable Medical Sensors | Wearable Vital Sign Monitors |
|---|---|
Use Scenario: Detecting low-battery condition in disposable glucose meters or pulse oximeters powered by coin cells. IC Role / Device Role / Timing Role: Comparator with built-in 0.2V reference monitors battery voltage against fixed threshold to trigger low-power alert before shutdown. Use Value: 700nA quiescent current extends shelf life and operational runtime; 1mm × 1mm UCSP fits within tight mechanical envelopes of single-use diagnostic strips. |
Use Scenario: Threshold detection for photodiode current in optical heart-rate sensors embedded in smartwatches. IC Role / Device Role / Timing Role: Noninverting comparator compares amplified photodiode signal to 0.2V reference to detect pulse peaks with minimal latency. Use Value: 15µs propagation delay ensures accurate timing resolution for BPM calculation; push-pull output directly drives MCU GPIO without pullup resistor. |
| Low-Power Industrial Sensors | Energy-Harvesting Edge Nodes |
Use Scenario: Monitoring supply rail integrity in battery-backed industrial temperature transmitters operating in remote locations. IC Role / Device Role / Timing Role: Voltage supervisor detecting undervoltage on 3.3V or 1.8V system rails using internal reference and rail-to-rail input capability. Use Value: -0.3V to +5.5V input range allows direct connection to unregulated energy sources; operation down to 1.0V VCC supports brownout resilience. |
Use Scenario: Enabling wake-up from ultra-low-power sleep mode when harvested voltage (e.g., from solar or thermal) crosses activation threshold. IC Role / Device Role / Timing Role: NanoPower comparator acts as autonomous wake-up trigger, asserting MCU interrupt upon reaching 0.2V reference level. Use Value: 400nA typical supply current minimizes parasitic drain on micro-energy storage capacitors; high-impedance input avoids loading weak harvesters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9644EBS+TG45 | Same UCSP package, identical 0.2V reference and 700nA max ICC, but open-drain output requiring external pullup. | Suitable where output must interface with higher-voltage logic (e.g., 5V MCU I/O) or wired-OR bus configurations. | Select MAX9644EBS+TG45 only if level translation or bus sharing is required; otherwise MAX9646EBS+TG45 reduces component count. |
| TLV3691DSF | 0.4V reference, 350nA typical ICC, SOT-23-5 package (2.9mm × 1.6mm), no internal reference trimming. | Lower supply current but larger footprint and less accurate reference; requires external resistor divider for 0.2V threshold. | Choose TLV3691DSF only if absolute minimum current dominates design priority and board space permits larger package. |
Compared with MAX9644EBS+TG45 and TLV3691DSF, MAX9646EBS+TG45 uniquely combines push-pull drive, factory-trimmed 0.2V reference, and 1mm² footprint-enabling lowest component count and highest accuracy in space- and power-constrained applications.
Availability
MAX9646EBS+TG45 is available at Aetrix Electronics and suitable for portable medical devices, wearable vital sign monitors, and low-power industrial sensors requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX9646EBS+TG45 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, medical, and communications applications.
The MAX964x family delivers nanoPower comparators with integrated references specifically for battery-operated portable electronics where board space, supply voltage headroom, and standby current are critical constraints.
FAQ
What is the function of the G45 suffix in MAX9646EBS+TG45?
The G45 suffix in MAX9646EBS+TG45 indicates a protective die coating applied during packaging. This coating enhances moisture resistance and improves reliability in humid or harsh environmental conditions without affecting electrical performance or pinout. The "+T" denotes tape-and-reel packaging, and "EBS" specifies the 4-bump UCSP package variant. MAX9646EBS+TG45 retains all specified electrical characteristics including 700nA max supply current and 15µs propagation delay.
Does MAX9646EBS+TG45 require an external pullup resistor?
No, MAX9646EBS+TG45 does not require an external pullup resistor because it features a push-pull output stage capable of both sourcing and sinking current. This distinguishes it from the open-drain MAX9644EBS+TG45 and MAX9645EBS+TG45 variants. The push-pull architecture allows MAX9646EBS+TG45 to directly drive CMOS inputs across its full 1.0V–5.5V supply range, simplifying schematic design and reducing bill-of-materials count.
What is the input voltage range specification for MAX9646EBS+TG45, and why is it important?
MAX9646EBS+TG45 supports an input voltage range of -0.3V to +5.5V, independent of supply voltage (VCC). This means the IN pin can accept signals exceeding VCC - for example, monitoring a 4.2V Li-ion battery while operating from a 1.8V rail. This rail-to-rail-plus capability eliminates external voltage dividers or level shifters, preserves signal integrity, and enables robust hot-swap and battery-monitoring functions in compact portable systems using MAX9646EBS+TG45.
How accurate is the internal 0.2V reference in MAX9646EBS+TG45 over temperature?
The internal reference in MAX9646EBS+TG45 is trimmed to ±1% accuracy at +25°C and maintains ±3.5% accuracy across the full -40°C to +85°C operating range. Its temperature coefficient is specified at 6µV/°C, resulting in <±0.5mV drift over the entire range. This level of stability enables reliable low-voltage detection in applications like coin-cell-powered medical sensors where MAX9646EBS+TG45's reference eliminates calibration overhead and external components.
Can MAX9646EBS+TG45 operate with a 1.0V supply, and what are the output voltage limits at that rail?
Yes, MAX9646EBS+TG45 is fully specified to operate with a 1.0V supply. At VCC = 1.0V and ISINK = 50µA, the output voltage low (VOL) is guaranteed ≤0.2V. At ISOURCE = 15µA, the output voltage high (VOH) is guaranteed ≥VCC – 0.08V (i.e., ≥0.92V). This ensures clean logic-level signaling even at minimum supply, making MAX9646EBS+TG45 suitable for next-generation ultra-low-voltage microcontrollers and energy-harvesting systems.
MAX9646EBS+TG45 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 4-WFBGA, CSPBGA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Push-Pull
- Voltage - Supply, Single/Dual (±):
- 1V ~ 5.5V
- :
- -
- Voltage - Input Offset (Max):
- 0.015µA
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 1.1µA
- Current - Quiescent (Max):
- 53dB PSRR
- CMRR, PSRR (Typ):
- 15µs
- Propagation Delay (Max):
- 0.9mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 4-UCSP (1.05x1.05)
MAX9646EBS+TG45 FAQ
1.How can I place an order for MAX9646EBS+TG45 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9646EBS+TG45 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 MAX9646EBS+TG45 reliable?
The price and inventory of MAX9646EBS+TG45 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9646EBS+TG45 is usually 5 days.
3.What payment methods are accepted for MAX9646EBS+TG45?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9646EBS+TG45 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9646EBS+TG45?
MAX9646EBS+TG45 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9646EBS+TG45 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 MAX9646EBS+TG45?
For technical support, including MAX9646EBS+TG45 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9646EBS+TG45 requirements.
6.How does Aetrix verify that MAX9646EBS+TG45 is sourced from the original manufacturer or authorized distributors?
All MAX9646EBS+TG45 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 MAX9646EBS+TG45 meets industry standards.
7.What is the process for return or replacement of MAX9646EBS+TG45?
All MAX9646EBS+TG45 units undergo pre-shipment inspection (PSI). If there is an issue with MAX9646EBS+TG45, 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 MAX9646EBS+TG45 part is unused and in its original packaging.
Return procedure for MAX9646EBS+TG45:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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