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Analog Devices Inc./Maxim Integrated MAX972EBL-T
- Part No.:
- MAX972EBL-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-WFBGA, CSPBGA
- Datasheet:
-
MAX972EBL-T.pdf
- Description:
- IC COMPARATOR 2 W/VOLT REF 8UCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX972EBL-T from Maxim Integrated is a single, ultra-low-power, open-drain comparator with no internal voltage reference and no programmable hysteresis. It draws ≤4 µA supply current over temperature, operates from 2.5V to 11V (or ±1.25V to ±5.5V), and features rail-to-rail input range down to V− and within 1.3V of V+. It is used in battery-powered threshold detection where minimal quiescent current and flexible supply operation are critical.
For engineers reviewing the MAX972EBL-T datasheet, MAX972EBL-T pinout, MAX972EBL-T application, or MAX972EBL-T equivalent, key selection considerations include its UCSP-8 package, absence of internal reference, lack of HYST/REF pins, 12 µs propagation delay at 10 mV overdrive, and compatibility with bipolar-to-single-ended level translation via open-drain output.
Technical Context
The MAX972EBL-T is a single comparator without internal voltage reference or hysteresis control circuitry - unlike MAX971/MAX982 variants. Its input stage supports common-mode voltages from V− to (V+ − 1.3V), enabling direct sensing near supply rails. The open-drain output sinks current to V− (not GND), requiring external pull-up for logic-level translation.
It lacks REF and HYST pins entirely, distinguishing it from MAX971/MAX982/MAX973 families. Its output transistor shares the same V− terminal as the negative supply, eliminating the separate GND pin found in MAX971/MAX974. This architecture simplifies single-supply use but restricts level-shifting to V−-referenced loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 11V single supply; ±1.25V to ±5.5V dual supply - supports wide input rail flexibility including low-voltage battery systems. |
| Quiescent Supply Current | ≤4 µA over temperature - enables multi-year operation in coin-cell–powered IoT sensors and wearables. |
| Input Common-Mode Range | V− to (V+ − 1.3V) - allows direct monitoring of signals near ground or high-side rails without attenuation. |
| Propagation Delay | 12 µs (10 mV overdrive, 100 pF load, 1 MΩ pull-up) - suitable for slow-varying thresholds like battery voltage monitoring. |
| Output Type | Open-drain sinking to V− - requires external pull-up; enables wire-OR logic and level translation referenced to V−. |
| Input Offset Voltage | ±10 mV - sets minimum detectable differential voltage; impacts accuracy in precision threshold applications. |
| Input Leakage Current | ±0.01 nA to ±5 nA - negligible loading on high-impedance sources such as RC timing networks or sensor bridges. |
Pinout & Package
MAX972EBL-T is packaged in an 8-bump UCSP (Ultra-Compact Silicon Package), bottom-terminal wafer-level chip-scale package measuring 1.5 mm × 1.5 mm × 0.6 mm. Pin 1 is marked by bump "A1" per Maxim's UCSP top-mark convention "ABC".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A1) | OUT | Open-drain output sinking to V−; must be pulled up externally for logic-high state. |
| 2 (C2) | V− | Negative supply rail; also serves as output sink reference - no separate GND pin. |
| 3 (C1) | IN+ | Noninverting input; accepts voltages from V− to (V+ − 1.3V). |
| 4 (B1) | IN− | Inverting input; matched leakage and offset performance with IN+. |
| 5 (B3) | HYST | No connection - MAX972 has no hysteresis function; pin is NC and must be left unconnected. |
| 6 (C3) | REF | No connection - MAX972 has no internal voltage reference; pin is NC and must be left unconnected. |
| 7 (A2) | V+ | Positive supply rail; supplies bias for internal circuitry and output FET gate drive. |
| 8 (A3) | GND | Ground terminal - electrically tied to V− internally; connects to system ground in single-supply configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | ≤4 µA across −40°C to +85°C - extends battery life in always-on monitoring nodes. |
| No internal reference | Eliminates 1.182V reference error and drift; enables use with external precision references or resistor dividers. |
| No HYST pin | Removes hysteresis configuration complexity; external positive feedback required if noise immunity is needed. |
| UCSP-8 package | 1.5 mm × 1.5 mm footprint - saves PCB area in space-constrained portable and medical devices. |
| V−-referenced output | Sinks to V− instead of GND - supports true dual-supply operation and bipolar signal interfacing without level shifters. |
Applications
| Battery Voltage Monitor | Low-Power Window Detector |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during sleep mode to trigger wake-up at 3.0V undervoltage or 4.2V overvoltage. IC Role / Device Role / Timing Role: Single comparator compares divided battery voltage against fixed thresholds generated by external resistive dividers. Use Value: 4 µA quiescent current ensures <1 µA system standby increase; UCSP-8 enables integration into compact wearable form factors. | Use Scenario: Detecting valid 5V USB power presence while rejecting noise from switching regulators. IC Role / Device Role / Timing Role: Two MAX972EBL-T units configured as high- and low-threshold comparators with external hysteresis resistors. Use Value: Absence of internal reference avoids reference-induced drift; independent threshold setting improves accuracy over temperature. |
| Level Translator (±5V → 3.3V) | Power-Good Indicator |
Use Scenario: Converting ±5V analog sensor outputs to 3.3V logic-compatible signals in mixed-supply industrial controllers. IC Role / Device Role / Timing Role: Comparator compares bipolar input against 0V reference; open-drain output pulled to 3.3V. Use Value: V−-sinking output allows direct interface to negative rails; rail-to-rail inputs eliminate need for input clamping diodes. | Use Scenario: Generating a clean "power-good" flag after DC-DC converter output stabilizes within ±3% tolerance. IC Role / Device Role / Timing Role: Single comparator monitors regulated output with external resistor divider and RC filter for noise rejection. Use Value: Low input leakage (<5 nA) prevents divider ratio error; 12 µs delay provides sufficient filtering without excessive startup latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX971CSA | Includes 1.182V ±1% internal reference and HYST pin; SO-8 package; 4 µA IQ. | Reduces external component count for reference-based thresholding; not suitable when reference drift must be avoided. | Select MAX971CSA when internal reference simplifies design and ±1% accuracy meets system requirements. |
| TLV3701IDBVR | Single comparator, 1.3 µA IQ, rail-to-rail input, open-drain output; SOT-23-5; no internal reference. | Lower supply current and smaller package; lacks UCSP thermal performance and dual-supply support. | Select TLV3701IDBVR for ultra-low-power, space-constrained designs where dual-supply operation is unnecessary. |
Compared with MAX972EBL-T, MAX971CSA adds integrated reference functionality at the cost of less flexible threshold design, while TLV3701IDBVR offers lower quiescent current and smaller footprint but sacrifices guaranteed dual-supply operation and UCSP thermal reliability.
Availability
MAX972EBL-T is available at Aetrix Electronics and suitable for battery-powered systems, threshold detectors, and level translators requiring stable component supply across industrial temperature ranges.
Supply support for MAX972EBL-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.
The MAX97x/MAX98x comparator family targets ultra-low-power sensing and monitoring systems where micropower operation, wide supply range, and open-drain flexibility are essential.
FAQ
What is the operating temperature range of the MAX972EBL-T?
The MAX972EBL-T is specified for operation from −40°C to +85°C (Extended temperature range). This is confirmed in the Ordering Information table, where "MAX972EBL-T" is explicitly listed with "−40°C to +85°C" under TEMP RANGE. All electrical characteristics in the datasheet are guaranteed across this full range.
Does the MAX972EBL-T include an internal voltage reference?
No, the MAX972EBL-T does not include an internal voltage reference. Per the Ordering Information table, the "INTERNAL PRECISION REFERENCE" entry for MAX972 is "None". The REF pin is not functional and must be left unconnected, unlike MAX971/MAX981 variants which provide a 1.182V ±1% or ±2% reference.
Can the MAX972EBL-T be used with dual supplies?
Yes, the MAX972EBL-T supports dual-supply operation from ±1.25V to ±5.5V. Its absolute maximum ratings and electrical characteristics specify dual-supply conditions, and its output sinks current to V− - enabling true bipolar signal handling. When using dual supplies, connect the GND pin to the system ground plane, not to V−.
What is the purpose of the HYST pin on the MAX972EBL-T?
The HYST pin on the MAX972EBL-T is not functional. As stated in the Ordering Information table, MAX972 has "No" internal hysteresis. The pin is a no-connect (NC) and must remain unconnected. Hysteresis must be implemented externally using positive feedback if required for noise immunity.
Which package type does the MAX972EBL-T use?
The MAX972EBL-T uses the 8-bump UCSP (Ultra-Compact Silicon Package), a wafer-level chip-scale package with dimensions of 1.5 mm × 1.5 mm × 0.6 mm. This is explicitly indicated by the "-T" suffix and "8 UCSP-8" entry in the Ordering Information table under PIN-PACKAGE.
MAX972EBL-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-WFBGA, CSPBGA
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- with Voltage Reference
- Number of Elements:
- 2
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 11V, ±1.25V ~ 5.5V
- :
- 10mV @ 5V
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- 25µA @ 5V
- Current - Output (Typ):
- 3.2µA
- Current - Quiescent (Max):
- -80dB, -80dB
- CMRR, PSRR (Typ):
- 12µs (Typ)
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-UCSP (1.52x1.52)
MAX972EBL-T FAQ
1.How can I place an order for MAX972EBL-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX972EBL-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 MAX972EBL-T reliable?
The price and inventory of MAX972EBL-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX972EBL-T is usually 5 days.
3.What payment methods are accepted for MAX972EBL-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX972EBL-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX972EBL-T?
MAX972EBL-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX972EBL-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 MAX972EBL-T?
For technical support, including MAX972EBL-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX972EBL-T requirements.
6.How does Aetrix verify that MAX972EBL-T is sourced from the original manufacturer or authorized distributors?
All MAX972EBL-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 MAX972EBL-T meets industry standards.
7.What is the process for return or replacement of MAX972EBL-T?
All MAX972EBL-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX972EBL-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 MAX972EBL-T part is unused and in its original packaging.
Return procedure for MAX972EBL-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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