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Monolithic Power Systems Inc. MPQ8112GJ-AEC1-Z
- Part No.:
- MPQ8112GJ-AEC1-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
MPQ8112GJ-AEC1-Z.pdf
- Description:
- 60V, HIGH-SIDE CURRENT-SENSE AMP
- Quantity:
- Payment:
- Shipping:
Inventory:3,728
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Product details
Overview
MPQ8112GJ-AEC1-Z from Monolithic Power Systems is a 60V AEC-Q100 Grade 1 qualified high-side current-sense amplifier with fixed 50V/V gain, 700kHz bandwidth, 300µA supply current, and 0V–60V common-mode input range. It operates from 2.7V to 60V supply and delivers precise voltage-output current sensing for battery monitoring in automotive ADAS and EPS systems.
For engineers reviewing the MPQ8112GJ-AEC1-Z datasheet, MPQ8112GJ-AEC1-Z pinout, MPQ8112GJ-AEC1-Z application, or MPQ8112GJ-AEC1-Z equivalent, key selection criteria include its fixed-gain voltage-output architecture, TSOT23-6L package compatibility, V5 enable/disable control, ±1% gain accuracy, and high-side sensing capability without ground-path disruption.
Technical Context
The MPQ8112GJ-AEC1-Z implements a precision current mirror topology with internal 1kΩ common-input resistors (RIN_1/RIN_2) and a 10kΩ internal output resistor (RIN_OUT), yielding a fixed 50V/V gain. Its V5 pin provides digital on/off control via 1.9V/2.0V UVLO thresholds, enabling low-power shutdown with 0.2µA typical quiescent current.
It supports high-side sensing across 0V–60V common-mode voltage while maintaining 300µV input offset voltage and 65–90dB CMRR. The device integrates back-to-back clamping diodes (±400mV) between RG1/RG2 pins and requires no external gain-setting resistors-unlike the adjustable-gain MPQ8112A variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7V to 60V - powers internal amplifier and current mirror; bypass capacitor required between VCC and GND. |
| Common-Mode Input Range | 0V to 60V - enables direct high-side sensing at battery rail without ground interference. |
| Gain | 50V/V fixed - eliminates external gain-resistor selection; output = 50 × ISENSE × RSENSE. |
| Bandwidth | 700kHz - supports fast transient response (500ns rise/fall) for short-circuit protection loops. |
| Input Offset Voltage | 300µV typical - limits measurement error at low sense voltages (e.g., <50mV full-scale). |
| Supply Current | 300µA typical - enables low-power operation in always-on vehicle subsystems. |
| V5 Enable Threshold | 1.9V lower / 2.0V upper - provides clean digital enable/disable control with 1mA sink capability. |
Pinout & Package
MPQ8112GJ-AEC1-Z is housed in a 6-lead TSOT23 package (2.9mm × 1.6mm × 0.85mm), moisture sensitivity level 1, RoHS-compliant, and AEC-Q100 Grade 1 qualified for automotive under-hood use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT | Output voltage node | Delivers amplified voltage output; no external load resistor required; floating allowed. |
| 2 RG2 | Negative gain resistor terminal | Connects directly to load side of RSENSE; internal 1kΩ resistor sets fixed gain path. |
| 3 RG1 | Positive gain resistor terminal | Connects directly to power side of RSENSE; internal 1kΩ resistor completes differential input path. |
| 4 VCC | Main power supply input | Supplies internal amplifier and current mirror; requires 0.1–1µF ceramic bypass capacitor. |
| 5 GND | Analog ground reference | Return path for internal circuitry; must be low-impedance and routed close to VCC bypass cap. |
| 6 V5 | Enable/disable control supply | Digital on/off pin: >2.0V enables, <1.9V disables; sinks up to 1mA; requires 10–100nF bypass cap. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 50V/V gain architecture | Eliminates external gain-resistor design complexity and tolerance drift; ensures repeatable calibration. |
| AEC-Q100 Grade 1 qualification | Rated for -40°C to +125°C junction temperature; validated for automotive safety-critical systems. |
| 700kHz bandwidth with 500ns response | Enables real-time overcurrent detection in motor control and battery protection circuits. |
| V5-controlled shutdown mode | Reduces system standby current to 0.2µA typical; supports ISO 16750-2 cold-cranking compliance. |
| Integrated ±400mV input clamping | Protects against transient overvoltage events without external TVS diodes on RG1/RG2 lines. |
Applications
| Advanced Driver Assistance Systems (ADAS) | Electric Power Steering (EPS) |
|---|---|
Use Scenario: Real-time motor phase current monitoring during lane-keeping assist maneuvers. IC Role / Device Role / Timing Role: High-side current-sense amplifier providing isolated analog feedback to MCU ADC within <500ns loop latency. Use Value: Enables precise torque estimation and fault detection at 60V battery rail without compromising ground integrity. |
Use Scenario: Continuous battery-side current monitoring during steering assist activation and regenerative braking. IC Role / Device Role / Timing Role: Fixed-gain voltage-output sensor feeding safety-critical ASIL-B controller with 50V/V scaling. Use Value: Delivers ±1% gain accuracy across -40°C to +125°C, supporting functional safety requirements per ISO 26262. |
| Electronic Stability Control (ESC) | Battery Management Systems (BMS) |
Use Scenario: Wheel-motor current sensing during traction control interventions on 48V mild-hybrid platforms. IC Role / Device Role / Timing Role: High-bandwidth analog front-end converting shunt voltage to MCU-readable signal at 700kHz. Use Value: Supports fast-loop current limiting (<1µs response) to prevent MOSFET shoot-through during ESC actuation. |
Use Scenario: High-side pack current measurement in 12V/48V automotive BMS for state-of-charge and health estimation. IC Role / Device Role / Timing Role: AEC-Q100 qualified current monitor interfacing with isolated sigma-delta ADC via VOUT pin. Use Value: Maintains 300µV offset stability over temperature, reducing calibration frequency and improving long-term SoC accuracy. |
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 |
|---|---|---|---|
| MAX40056ATA+T | 500kHz bandwidth, 2.7V–65V supply, 250µA IQ, but requires external gain resistors and lacks V5 enable control. | Used in industrial motor drives where programmability outweighs automotive qualification needs. | Select when adjustable gain and wider supply range are prioritized over AEC-Q100 compliance and integrated enable logic. |
| INA240A1QPWRQ1 | 4V/V fixed gain, 800kHz bandwidth, 2.7V–80V supply, 2.4mA IQ, and integrated PWM rejection - no V5 pin. | Deployed in EV inverter DC-link monitoring where high common-mode rejection at switching frequencies is critical. | Select when PWM noise immunity and ultra-wide common-mode range (>60V) are required, accepting higher quiescent current. |
Compared with MAX40056ATA+T and INA240A1QPWRQ1, MPQ8112GJ-AEC1-Z uniquely combines AEC-Q100 Grade 1 qualification, V5-controlled shutdown, fixed 50V/V gain, and 300µA IQ in TSOT23-6L - making it optimal for space-constrained, low-power automotive subsystems requiring deterministic enable timing and minimal external components.
Availability
MPQ8112GJ-AEC1-Z is available at Aetrix Electronics and suitable for Advanced Driver Assistance Systems (ADAS), Electric Power Steering (EPS), and Electronic Stability Control (ESC) requiring stable component supply across automotive production lifecycles.
Supply support for MPQ8112GJ-AEC1-Z 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
Monolithic Power Systems (MPS) designs high-performance power management semiconductors for automotive, industrial, and cloud infrastructure applications, with focus on integration, efficiency, and reliability.
The MPQ8112 family belongs to MPS's AEC-Q100-qualified current-sense amplifier product line, engineered specifically for high-accuracy, high-voltage, high-bandwidth current monitoring in safety-critical automotive subsystems.
FAQ
What is the function of the V5 pin on MPQ8112GJ-AEC1-Z?
The V5 pin serves as a digital enable/disable control input. Pulling V5 above 2.0V activates the device; pulling it below 1.9V places it in shutdown mode with 0.2µA typical quiescent current. It supplies the internal trim and control block and must source ≥1mA with a 10–100nF ceramic bypass capacitor.
Can MPQ8112GJ-AEC1-Z be used with a 48V battery system?
Yes. Its 0V–60V common-mode input range and 2.7V–60V supply voltage rating fully support 48V automotive systems. The device maintains ±1% gain accuracy and 300µV offset across -40°C to +125°C, meeting requirements for 48V mild-hybrid EPS and BMS applications.
Does MPQ8112GJ-AEC1-Z require external gain-setting resistors?
No. Unlike the MPQ8112A variant, MPQ8112GJ-AEC1-Z integrates internal 1kΩ common-input resistors and a 10kΩ output resistor to deliver a fixed 50V/V gain. RG1 and RG2 pins connect directly to the sense resistor terminals without external components.
How does the MPQ8112GJ-AEC1-Z handle overvoltage transients on RG1/RG2?
It features integrated back-to-back clamping diodes between RG1 and RG2 with ±400mV threshold and 100mA sink capacity. When VSENSE exceeds this range, the diodes limit voltage stress - provided external RG1/RG2 traces are designed to limit peak current below 100mA during fault conditions.
What is the maximum allowable output voltage (VOUT) for MPQ8112GJ-AEC1-Z?
VOUT is limited to 20V maximum due to internal output resistor (RIN_OUT) voltage rating. This constraint applies regardless of VCC level. For example, at VCC = 60V, VOUT must remain ≤20V - requiring appropriate RSENSE and gain scaling to avoid saturation.
Is MPQ8112GJ-AEC1-Z compatible with standard TSOT23-6L PCB footprints?
Yes. It uses the JEDEC MO-193 AB-compliant TSOT23-6L package (2.9mm × 1.6mm × 0.85mm). Recommended land pattern matches standard IPC-7351B Type C footprint, with thermal pad grounding optional per MPS layout guidelines in Figure 6 of the datasheet.
What differentiates MPQ8112GJ-AEC1-Z from MPQ8112AGJ-AEC1-Z?
MPQ8112GJ-AEC1-Z is the fixed 50V/V voltage-output version; MPQ8112AGJ-AEC1-Z is the current-output variant with adjustable gain set by external RG1/RG2 and ROUT resistors. They share identical package, AEC-Q100 qualification, and pinout, but differ in internal architecture and output interface.
MPQ8112GJ-AEC1-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 700 kHz
- Current - Input Bias:
- 250 nA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 300µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 60 V
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6-L
MPQ8112GJ-AEC1-Z FAQ
1.How can I place an order for MPQ8112GJ-AEC1-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ8112GJ-AEC1-Z 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 MPQ8112GJ-AEC1-Z reliable?
The price and inventory of MPQ8112GJ-AEC1-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ8112GJ-AEC1-Z is usually 5 days.
3.What payment methods are accepted for MPQ8112GJ-AEC1-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ8112GJ-AEC1-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ8112GJ-AEC1-Z?
MPQ8112GJ-AEC1-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ8112GJ-AEC1-Z 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 MPQ8112GJ-AEC1-Z?
For technical support, including MPQ8112GJ-AEC1-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ8112GJ-AEC1-Z requirements.
6.How does Aetrix verify that MPQ8112GJ-AEC1-Z is sourced from the original manufacturer or authorized distributors?
All MPQ8112GJ-AEC1-Z 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 MPQ8112GJ-AEC1-Z meets industry standards.
7.What is the process for return or replacement of MPQ8112GJ-AEC1-Z?
All MPQ8112GJ-AEC1-Z units undergo pre-shipment inspection (PSI). If there is an issue with MPQ8112GJ-AEC1-Z, 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 MPQ8112GJ-AEC1-Z part is unused and in its original packaging.
Return procedure for MPQ8112GJ-AEC1-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPQ8112GJ-AEC1-Z Tags
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