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Analog Devices Inc. ADUC7036BCPZ
- Part No.:
- ADUC7036BCPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad, CSP
- Datasheet:
-
ADUC7036BCPZ.pdf
- Description:
- IC MCU 16/32B 96KB FLASH 48LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,306
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Product details
Overview
ADUC7036BCPZ from Analog Devices is an integrated precision battery sensor IC for automotive 12 V battery monitoring, featuring dual simultaneous-sampling 16-bit Σ-Δ ADCs (current/voltage/temperature), ARM7TDMI MCU core running at up to 20.48 MHz, 96 kB Flash/EE, and SAE J2602/LIN 2.0 slave interface - deployed in battery management units for start-stop systems and ECU power supervision.
For engineers reviewing the ADUC7036BCPZ datasheet, ADUC7036BCPZ pinout, ADUC7036BCPZ application, or ADUC7036BCPZ equivalent, key selection criteria include its ±5 ppm/°C on-chip voltage reference, programmable PGA gain (1–512) for shunt current sensing, −40°C to +115°C operation, 48-lead LFCSP package, and LIN-compliant UART with hardware synchronization - all critical for automotive-grade battery state-of-charge and health estimation.
Technical Context
The ADUC7036BCPZ integrates analog acquisition and microcontroller functions into a single die: its dual 16-bit Σ-Δ ADCs operate simultaneously with independent programmable throughput (1 Hz–8 kHz), chop mode for offset drift reduction, and digital comparators with accumulator for real-time current integration. The current channel supports fully differential buffered input with ±200 mV to +300 mV absolute range and PGA gain up to 512; the voltage channel includes an on-chip 24:1 resistive attenuator for direct 12 V battery input.
It implements a complete automotive sensor node: ARM7TDMI core executes firmware for battery diagnostics and LIN protocol stack; memory includes 96 kB Flash/EE (10,000 cycles, 20-year retention) and 6 kB SRAM; peripherals include LIN 2.0 slave UART, SPI, GPIO, three general-purpose timers, wake-up timer, watchdog, and power supply monitor with POR and LVF detection - all powered directly from the 12 V battery rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Resolution | 16-bit simultaneous sampling across current, voltage, and temperature channels - enables high-fidelity battery parameter capture without time skew. |
| PGA Gain Range | 1 to 512 programmable in current channel - supports wide dynamic range shunt-based current measurement from µA to 100s of A. |
| Voltage Input Range | 0 V to 28.8 V with on-chip 24:1 attenuator - allows direct connection to 12 V automotive battery without external scaling. |
| Reference Accuracy | ±5 ppm/°C tempco, ±0.15% initial accuracy - ensures stable ADC conversion over full −40°C to +115°C automotive temperature range. |
| Core Clock Speed | Up to 20.48 MHz via on-chip PLL - delivers sufficient compute headroom for real-time LIN protocol handling and battery algorithm execution. |
| Operating Voltage | 3.5 V to 18 V direct battery supply - eliminates need for external DC/DC regulator in most automotive battery monitoring applications. |
| Flash Memory | 96 kB Flash/EE with 10,000 write cycles and 20-year data retention - supports field-upgradable firmware and long-life embedded deployment. |
| LIN Compliance | SAE J2602/LIN 2.0 slave interface with hardware sync - enables plug-and-play integration into automotive body control modules and gateway networks. |
Pinout & Package
ADUC7036BCPZ is housed in a 48-lead, 7 mm × 7 mm LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad, rated for −40°C to +115°C ambient operation and optimized for automotive PCB thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Battery supply input | Accepts 3.5 V–18 V direct automotive battery input; powers internal LDOs and core logic. |
| REG_AVDD / REG_DVDD | Analog/digital regulated supplies | 2.6 V internal LDO outputs (1 mA / 5 mA source capability) for precision analog and digital domains. |
| IIN+, IIN− | Differential current sense inputs | Fully buffered, PGA-input terminals for high-accuracy shunt-based current measurement. |
| VBAT | Attenuated battery voltage input | Connects to on-chip 24:1 resistor divider for direct 12 V battery monitoring with <±0.25% total gain error. |
| VTEMP | Temperature sensor input | Supports external NTC/PTC or internal die temperature sensor for thermal compensation and battery health assessment. |
| LIN/BSD | LIN bus transceiver I/O | Single-pin bidirectional LIN 2.0 physical layer interface with integrated driver/receiver and fault protection. |
| GPIO_0–GPIO_9 | General-purpose I/O | 9-pin configurable port supporting IRQ, SPI, UART, and wake-up functions - enables flexible system interfacing. |
| TCK/TMS/TDI/TDO/NTRST | JTAG debug interface | Standard ARM JTAG pins for in-circuit programming, firmware update, and real-time debugging. |
Key Features
| Feature | Design Value |
|---|---|
| Dual simultaneous 16-bit Σ-Δ ADCs | Enables time-aligned current and voltage sampling for accurate Coulomb counting and battery impedance calculation. |
| Programmable PGA (gain 1–512) | Allows single-shunt design across wide current ranges - e.g., 100 A peak with 500 µΩ shunt yields 50 mV full-scale at gain=100. |
| On-chip 24:1 resistive attenuator | Permits direct 12 V battery connection with <±0.25% gain error and <±10 ppm/°C drift - eliminates external resistor network. |
| LIN 2.0 slave with hardware sync | Reduces CPU overhead by offloading bit timing and frame synchronization - critical for deterministic response in safety-critical nodes. |
| −40°C to +115°C guaranteed operation | Meets AEC-Q100 Grade 1 requirements for under-hood automotive placement without derating or external cooling. |
| Integrated power supply monitor & POR | Monitors VDD for brown-out detection (trip at 2.85–3.15 V) and provides 20 ms reset timeout - ensures reliable boot under cranking conditions. |
Applications
| Battery State-of-Charge Monitoring | Start-Stop System Supervision |
|---|---|
Use Scenario: Real-time tracking of charge/discharge current and terminal voltage in 12 V lead-acid or AGM batteries for hybrid vehicles. IC Role / Device Role / Timing Role: ADUC7036BCPZ performs simultaneous current integration and voltage sampling at 10–100 Hz to compute remaining capacity and health metrics. Use Value: Achieves <±1% SoC accuracy over lifetime using factory-calibrated ADCs and on-chip temperature compensation. |
Use Scenario: Monitoring battery voltage during engine cranking and restart events to prevent deep discharge and ensure reliable restart capability. IC Role / Device Role / Timing Role: ADUC7036BCPZ detects VDD dips below 6 V (PSM trip) and triggers wake-up or diagnostic logging before system shutdown. Use Value: Enables predictive maintenance alerts and adaptive start logic by correlating voltage sag depth/duration with battery aging. |
| ECU Power Rail Integrity | Thermal-Aware Battery Health Assessment |
Use Scenario: Verifying stable 12 V supply to engine control units and infotainment modules during transient load switching. IC Role / Device Role / Timing Role: ADUC7036BCPZ continuously monitors VBAT via attenuator and reports anomalies via LIN to central gateway. Use Value: Detects intermittent open-circuit faults or corroded connections by analyzing voltage ripple and step-response decay time. |
Use Scenario: Correlating battery internal resistance rise with temperature and cycle count to estimate end-of-life in EV auxiliary systems. IC Role / Device Role / Timing Role: ADUC7036BCPZ measures die temperature and shunt voltage at multiple gains to extract impedance spectra at low frequencies. Use Value: Delivers <±2°C temperature accuracy (after calibration) and sub-µV noise floor - enabling early sulfation detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17205 | Gas gauge IC with model-based SoC algorithm; no integrated MCU or LIN interface; uses SMBus/I²C. | Targeted at portable electronics; lacks automotive temperature range and direct battery-supply operation. | Choose when algorithmic battery modeling is prioritized over direct LIN integration and MCU flexibility. |
| TI BQ76952 | Multi-cell battery monitor with integrated ADCs, but designed for 3–16 cell Li-ion stacks; no 12 V single-battery support. | Used in EV traction packs and energy storage; not qualified for 12 V automotive battery monitoring. | Choose only for high-voltage battery systems requiring cell balancing - not a functional substitute for ADUC7036BCPZ. |
Compared with MAX17205 and BQ76952, the ADUC7036BCPZ uniquely combines automotive-grade analog front-end precision, ARM7-based firmware extensibility, and native LIN 2.0 slave functionality in a single-package solution for 12 V battery sensing - eliminating external protocol translation and enabling OEM-specific diagnostics.
Availability
ADUC7036BCPZ is available at Aetrix Electronics and suitable for automotive battery management, start-stop system supervision, and ECU power integrity monitoring requiring stable component supply across extended temperature and long product lifecycles.
Supply support for ADUC7036BCPZ 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with deep expertise in precision measurement and automotive electronics.
The ADUC7036BCPZ belongs to Analog Devices' ADuC70xx family of precision analog microcontrollers, engineered specifically for automotive battery sensing and power management applications where accuracy, reliability, and protocol compliance are mission-critical.
FAQ
What is the operating temperature range certified for the ADUC7036BCPZ?
The ADUC7036BCPZ is fully specified for continuous operation from −40°C to +115°C ambient temperature, meeting automotive Grade 1 requirements. This rating covers all electrical specifications including ADC performance, LIN interface timing, and Flash memory retention - validated across the full range without derating.
Does the ADUC7036BCPZ require an external crystal for LIN communication?
No, the ADUC7036BCPZ does not require an external crystal for LIN communication. It includes an on-chip precision oscillator (131.072 kHz, ±1% accuracy) and low-power oscillator (131.072 kHz, ±3% accuracy), both usable for LIN baud rate generation. An external 32.768 kHz watch crystal is optional and improves timing stability but is not mandatory for SAE J2602/LIN 2.0 compliance.
How is the current measurement range configured on the ADUC7036BCPZ?
The ADUC7036BCPZ configures current measurement range via its programmable gain amplifier (PGA), selectable from gain = 1 to 512 in discrete steps. Combined with the ±200 mV to +300 mV absolute input range and internal 1.2 V reference, this allows full-scale shunt voltages from ±2.3 mV (gain=512) to ±9.375 mV (gain=128). System calibration registers further extend usable range by ±10%.
Can the ADUC7036BCPZ operate directly from a 12 V automotive battery without external regulators?
Yes, the ADUC7036BCPZ operates directly from a 12 V automotive battery via its VDD pin (3.5 V–18 V range). Internal LDOs generate regulated 2.6 V supplies for analog (REG_AVDD) and digital (REG_DVDD) domains. No external DC/DC converter or linear regulator is required - simplifying bill-of-materials and improving system efficiency in battery-sensing nodes.
What LIN protocol versions does the ADUC7036BCPZ support?
The ADUC7036BCPZ supports SAE J2602 and LIN 2.0 specifications as a slave node. Its UART-based LIN interface includes hardware synchronization, dominant/recessive level detection, and slew-rate control compliant with LIN 2.0 physical layer requirements (including bus load conditions up to 10 nF || 500 Ω). It does not support LIN 2.1 or later versions.
ADUC7036BCPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 48-VFQFN Exposed Pad, CSP
- Series:
- MicroConverter® ADuC7xxx
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM7®
- Core Size:
- 16/32-Bit
- Speed:
- 20.48MHz
- Connectivity:
- LINbus, SPI, UART/USART
- Peripherals:
- PSM, Temp Sensor, WDT
- Number of I/O:
- 9
- Program Memory Size:
- 96KB (48K x 16)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1.5K x 32
- Voltage - Supply (Vcc/Vdd):
- 3.5V ~ 18V
- Data Converters:
- A/D 2x16b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 115°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
ADUC7036BCPZ FAQ
1.How can I place an order for ADUC7036BCPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUC7036BCPZ 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 ADUC7036BCPZ reliable?
The price and inventory of ADUC7036BCPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUC7036BCPZ is usually 5 days.
3.What payment methods are accepted for ADUC7036BCPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUC7036BCPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUC7036BCPZ?
ADUC7036BCPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUC7036BCPZ 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 ADUC7036BCPZ?
For technical support, including ADUC7036BCPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUC7036BCPZ requirements.
6.How does Aetrix verify that ADUC7036BCPZ is sourced from the original manufacturer or authorized distributors?
All ADUC7036BCPZ 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 ADUC7036BCPZ meets industry standards.
7.What is the process for return or replacement of ADUC7036BCPZ?
All ADUC7036BCPZ units undergo pre-shipment inspection (PSI). If there is an issue with ADUC7036BCPZ, 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 ADUC7036BCPZ part is unused and in its original packaging.
Return procedure for ADUC7036BCPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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