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Analog Devices Inc./Maxim Integrated MAX9034ASD+
- Part No.:
- MAX9034ASD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX9034ASD+.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:296
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Product details
Overview
MAX9034ASD+ from Maxim Integrated is a quad low-power voltage comparator optimized for single-supply operation from +2.5V to +5.5V, featuring 188ns propagation delay, 35μA per comparator supply current, 4mV internal hysteresis, rail-to-rail output swing, and operation across -40°C to +125°C - deployed in battery-powered portable systems and sensor signal detection circuits.
For engineers reviewing the MAX9034ASD+ datasheet, MAX9034ASD+ pinout, MAX9034ASD+ application, or MAX9034ASD+ equivalent, this page delivers verified package mapping (14-pin SO), confirmed electrical behavior (VCM = VSS to VDD–1.1V, PSRR ≥72dB), thermal performance data, and real-world design context for threshold detection and line-receiver use cases.
Technical Context
The MAX9034ASD+ integrates four independent comparators sharing common VDD and VSS rails, each with input common-mode range extending from ground to within 1.1V of VDD and no phase reversal under overdriven inputs. Its output stage minimizes switching current transients to suppress power-supply glitches.
Internal 4mV hysteresis ensures stable switching against noise on slow-moving signals, while rail-to-rail CMOS outputs drive 10kΩ loads with VOL ≤ 400mV at 4mA sink and VOH ≥ VDD – 400mV at 4mA source - all guaranteed over full automotive temperature range (-40°C to +125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V single supply - enables direct interface with Li-ion battery and 3.3V/5V logic domains without level shifting. |
| Propagation Delay | 188ns at VOD = 100mV - supports reliable timing-critical detection up to ~1MHz edge rates in digital line receivers. |
| Supply Current per Comparator | 35μA typical - allows four-channel operation at <140μA total, critical for multi-sensor battery-powered nodes. |
| Input Common-Mode Range | VSS to VDD – 1.1V - accommodates ground-referenced sensors and rail-split biasing without external resistive dividers. |
| Hysteresis | 4mV built-in - eliminates chatter on noisy or slowly ramping inputs like photodiode preamp outputs or thermistor bridges. |
| Output Swing | Rail-to-rail - ensures full logic-level compatibility with downstream CMOS/TTL inputs across entire supply range. |
| PSRR / CMRR | ≥72dB - maintains trip-point stability despite supply ripple or common-mode interference in industrial sensor environments. |
Pinout & Package
MAX9034ASD+ is housed in a 14-pin Small Outline (SO) package with standard 1.27mm pitch, JEDEC MS-012AC compliant footprint, and RoHS-compliant lead finish.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTD | Comparator D open-drain output - requires external pull-up for logic-high assertion; compatible with mixed-voltage I/O domains. |
| 2 | IND− | Comparator D inverting input - referenced to same VSS as all comparators; accepts signals down to ground. |
| 3 | IND+ | Comparator D noninverting input - supports common-mode voltages up to VDD − 1.1V. |
| 4 | VSS | Negative supply (ground) - shared return path for all four comparators; must be bypassed with 0.1µF capacitor. |
| 5 | VDD | Positive supply (+2.5V to +5.5V) - powers all comparators; requires local 0.1µF ceramic decoupling. |
| 6 | INA+ | Comparator A noninverting input - electrically identical to IND+/INC+/INB+; no internal cross-coupling. |
| 7 | INA− | Comparator A inverting input - differential pair input with ±5mV max offset and 8nA max bias current. |
| 8 | OUTA | Comparator A open-drain output - functionally identical to OUTD; supports wired-OR configurations. |
| 9 | OUTC | Comparator C open-drain output - independent channel; shares VDD/VSS but no internal signal coupling. |
| 10 | INC− | Comparator C inverting input - matched input characteristics to INA−/INB−/IND−. |
| 11 | INC+ | Comparator C noninverting input - supports same common-mode range and hysteresis behavior as other inputs. |
| 12 | INB− | Comparator B inverting input - fully isolated channel; no shutdown or enable control. |
| 13 | INB+ | Comparator B noninverting input - identical electrical specs to other noninverting inputs; no internal reference. |
| 14 | OUTB | Comparator B open-drain output - provides fourth independent decision node; sink capability rated to 45mA short-circuit. |
Key Features
| Feature | Design Value |
|---|---|
| Quad comparator integration | Four independent channels in one 14-pin SO package - reduces board area vs. discrete duals and simplifies BOM for multi-threshold systems. |
| 4mV internal hysteresis | Eliminates need for external positive feedback resistors in noise-prone applications like keyless entry RF envelope detection. |
| Rail-to-rail output swing | Ensures full logic-level compatibility with 1.8V, 3.3V, and 5V controllers without external level translators. |
| 188ns propagation delay | Supports accurate timing capture in high-speed digital line receivers and pulse-width discriminators up to 1MHz. |
| Low 35μA/comparator supply current | Enables always-on sensor monitoring in portable medical devices and IoT endpoints with multi-year battery life. |
Applications
| Battery-Powered Threshold Detection | Sensor Signal Discrimination |
|---|---|
Use Scenario: Monitoring battery voltage levels across multiple thresholds (e.g., warning, critical, shutdown) in handheld test equipment. IC Role / Device Role / Timing Role: Quad comparator performing simultaneous analog window comparisons with hysteresis to prevent false triggers during voltage sag. Use Value: Single MAX9034ASD+ replaces four discrete comparators, reducing PCB area by >60% and eliminating four sets of external hysteresis resistors. |
Use Scenario: Converting analog outputs from ambient light, temperature, and humidity sensors into clean digital logic signals for microcontroller ADC triggering. IC Role / Device Role / Timing Role: Four independent comparators acting as configurable threshold detectors with rail-to-rail outputs directly interfacing MCU GPIOs. Use Value: Input common-mode range to VDD–1.1V allows direct connection of ratiometric sensors without level-shifting circuitry. |
| Digital Line Receiver | Photodiode Preamp Interface |
Use Scenario: Recovering digital data from attenuated or distorted baseband signals in industrial fieldbus receivers. IC Role / Device Role / Timing Role: High-speed comparator channel detecting zero-crossings with minimal propagation delay variation across temperature. Use Value: 188ns delay with <10ns tempco ensures consistent timing margin in RS-485/RS-232 receiver front-ends operating from -40°C to +125°C. |
Use Scenario: Amplifying and digitizing weak photocurrents from optical smoke detectors or UV sensors. IC Role / Device Role / Timing Role: Low-input-bias-current comparator (8nA typ.) converting transimpedance amplifier output into TTL-compatible pulses. Use Value: 4mV hysteresis prevents oscillation on slow-rising photocurrent edges, improving reliability in low-light detection scenarios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Higher supply current (500μA/channel), wider supply range (2V–36V), no built-in hysteresis, open-collector outputs only. | Requires external hysteresis resistors and pull-ups; better suited for high-voltage industrial controls than portable battery systems. | Select LM339DR only when operating above 5.5V or requiring higher output sink current (>16mA). |
| TLV3704IPW | Lower supply current (1μA/channel), rail-to-rail inputs, 350ns delay, 14-pin TSSOP only - no SO option. | Superior battery life but slower response; unsuitable for >500kHz line-receiver timing-critical use. | Choose TLV3704IPW when ultra-low power dominates over speed, and TSSOP layout is acceptable. |
Compared with LM339DR and TLV3704IPW, MAX9034ASD+ uniquely balances low quiescent current (35μA), fast propagation (188ns), built-in hysteresis, and SO package availability - making it optimal for space-constrained, battery-operated systems needing deterministic timing and noise immunity.
Availability
MAX9034ASD+ is available at Aetrix Electronics and suitable for battery-powered portable systems, sensor signal detection circuits, and digital line receivers requiring stable component supply across automotive-grade temperature ranges and long production lifecycles.
Supply support for MAX9034ASD+ 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 industrial, automotive, and communications applications - emphasizing low-power, high-reliability, and small-footprint solutions.
The MAX9030–MAX9034 family targets cost-sensitive, space-constrained systems requiring robust single-supply comparators with integrated hysteresis and extended temperature operation - especially in portable and automotive sensor interfaces.
FAQ
What is the maximum capacitive load the MAX9034ASD+ can drive without oscillation?
The MAX9034ASD+ is specified to drive up to 150pF without sustained oscillations, as confirmed in the Electrical Characteristics table. This value reflects the maximum load where propagation delay remains stable and output transitions retain monotonicity. Exceeding 150pF may increase delay unpredictably or induce ringing, particularly at high overdrive conditions. For loads >150pF, consider adding a series resistor near the output or using a buffer stage. The MAX9034ASD+ datasheet explicitly guarantees performance only up to this limit under standard test conditions (VDD = +5V, CL = 15pF baseline).
Does the MAX9034ASD+ include shutdown functionality like the MAX9030?
No, the MAX9034ASD+ does not include shutdown functionality. Shutdown is exclusive to the MAX9030 variant (single comparator with SHDN pin); the MAX9034ASD+ is a quad comparator without enable or shutdown control. All four channels operate continuously when powered. This is clearly stated in the General Description: "The MAX9031, MAX9032, and MAX9034 are low-cost single, dual, and quad comparators without shutdown, respectively." Therefore, the MAX9034ASD+ has no SHDN pin and draws 35μA per channel at all times - a key differentiator from the MAX9030.
What is the input offset voltage specification for the MAX9034ASD+ over temperature?
The MAX9034ASD+ has a guaranteed input offset voltage of ±5mV maximum over the full -40°C to +125°C operating range, with ±1mV typical at +25°C. Its offset voltage temperature coefficient is ±1µV/°C, meaning drift contributes less than ±0.15mV over the full range. These values are specified in the Electrical Characteristics table under "Input Offset Voltage" and "Input Offset Voltage Temperature Coefficient." The offset is defined as the center of the hysteresis zone, and the 4mV hysteresis band itself remains stable across temperature - ensuring consistent noise immunity regardless of ambient conditions.
Can the MAX9034ASD+ operate from dual supplies, and what are the limits?
Yes, the MAX9034ASD+ supports dual-supply operation with ±1.25V to ±2.75V (i.e., total supply span of 2.5V to 5.5V), as stated in the Detailed Description section. This means it can be used with ±1.5V, ±2.5V, or asymmetric rails such as +3.3V and -1.2V - provided the absolute voltage between VDD and VSS stays within 2.5V–5.5V and no pin exceeds its absolute maximum ratings (e.g., inputs limited to VSS – 0.3V to VDD + 0.3V). However, the device is optimized for single-supply use, and all guaranteed specifications (e.g., propagation delay, PSRR) are characterized under single-supply conditions unless otherwise noted.
Is the MAX9034ASD+ pin-compatible with other packages in the MAX903x family?
No, the MAX9034ASD+ (14-pin SO) is not pin-compatible with other MAX903x variants. The MAX9030 uses 5- or 6-pin SC70/SOT23, the MAX9031 uses 5-pin SC70/SOT23, the MAX9032 uses 8-pin SOT23/µMAX/SO, and only the MAX9034 uses 14-pin packages - either TSSOP (MAX9034AUD+) or SO (MAX9034ASD+). While both MAX9034 variants share identical pin functions, the SO and TSSOP footprints differ mechanically and are not interchangeable on PCBs. No cross-package pin alignment exists across the family due to differing channel counts and feature sets.
MAX9034ASD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 5.5V
- :
- 1mV @ 5V
- Voltage - Input Offset (Max):
- 0.008µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 55µA
- Current - Quiescent (Max):
- 100dB CMRR, 100dB PSRR
- CMRR, PSRR (Typ):
- 228ns
- Propagation Delay (Max):
- 4mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
MAX9034ASD+ FAQ
1.How can I place an order for MAX9034ASD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9034ASD+ 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 MAX9034ASD+ reliable?
The price and inventory of MAX9034ASD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9034ASD+ is usually 5 days.
3.What payment methods are accepted for MAX9034ASD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9034ASD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9034ASD+?
MAX9034ASD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9034ASD+ 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 MAX9034ASD+?
For technical support, including MAX9034ASD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9034ASD+ requirements.
6.How does Aetrix verify that MAX9034ASD+ is sourced from the original manufacturer or authorized distributors?
All MAX9034ASD+ 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 MAX9034ASD+ meets industry standards.
7.What is the process for return or replacement of MAX9034ASD+?
All MAX9034ASD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX9034ASD+, 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 MAX9034ASD+ part is unused and in its original packaging.
Return procedure for MAX9034ASD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9034ASD+ Tags
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LM339DR
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LM2903P
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