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Analog Devices Inc. ADUC7033BCPZ-8L-RL
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- Part No.:
- ADUC7033BCPZ-8L-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Sensor and Detector Interfaces
- Package:
- 48-WFQFN Exposed Pad, CSP
- Datasheet:
-
ADUC7033BCPZ-8L-RL.pdf
- Description:
- IC MCU FLASH 96K ANLG I/O 48LFCS
- Quantity:
- Payment:
- Shipping:
Inventory:6,578
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Product details
Overview
ADUC7033BCPZ-8L-RL from Analog Devices is a fully integrated, automotive-grade precision battery sensor IC combining dual 16-bit Σ-Δ ADCs (current and voltage/temperature channels), ARM7TDMI MCU core, LIN 2.0 slave interface, and on-chip 2.6 V LDO - all operating directly from 12 V battery supply. It delivers ±2°C temperature accuracy in power-down mode and supports simultaneous sampling at up to 8 kHz for real-time battery state monitoring in engine control units and battery management modules.
For engineers reviewing the ADUC7033BCPZ-8L-RL datasheet, ADUC7033BCPZ-8L-RL pinout, ADUC7033BCPZ-8L-RL application, or ADUC7033BCPZ-8L-RL equivalent, key selection criteria include its −40°C to +115°C operation, 48-lead LQFP package, dual-channel simultaneous ADC acquisition with programmable gain (1–512), LIN 2.0 compliance, and 96 kB Flash/6 kB SRAM memory architecture.
Technical Context
The ADUC7033BCPZ-8L-RL integrates three synchronized analog acquisition paths: a fully differential current-sensing ADC with buffered input and PGA (gain 1–512), a voltage channel with on-chip 24× resistive attenuator for direct 12 V battery input, and a temperature channel supporting both external and on-die sensors. All ADCs share a common 1.2 V internal reference with 5 ppm/°C drift and support chop modes for ultra-low offset error (±0.5 μV typical).
Its ARM7TDMI core runs at up to 20.48 MHz via on-chip PLL locked to either internal 131.072 kHz oscillators (±1% precision, ±3% low-power) or external 32.768 kHz crystal. Power management includes normal mode (10 mA @ 10 MHz), low-power monitor mode (300–500 μA), and dedicated wake-up I/O with monoflop timeout (0.6–2 sec), enabling robust sleep/wake cycles in automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Resolution | Dual 16-bit Σ-Δ ADCs with no missing codes across all update rates and modes. |
| ADC Throughput | Programmable from 1 Hz to 8 kHz; chop-on mode supports 2.6 kHz max in normal mode. |
| Current Channel Input Range | ±200 mV differential; effective full-scale range scales with PGA gain (e.g., ±2.3 mV at gain = 512). |
| Voltage Channel Input Range | 0 V to 28.8 V with 24× on-chip attenuator; supports direct 12 V battery sensing without external dividers. |
| Temperature Accuracy | ±2°C after user calibration when MCU is in power-down or standby mode (−25°C to +65°C range). |
| Core Clock Speed | 8 programmable selections from 0.16 MHz to 20.48 MHz; derived from PLL with 20.48 MHz base frequency. |
| Memory | 96 kB Flash/EE (10,000-cycle endurance, 20-year retention) and 6 kB SRAM for firmware and runtime data. |
| Operating Temperature | −40°C to +115°C ambient, fully specified for under-hood automotive environments. |
Pinout & Package
ADUC7033BCPZ-8L-RL is housed in a 48-lead, 7 mm × 7 mm LQFP package with exposed thermal pad (RoHS-compliant, lead-free). Pin functions are validated per Analog Devices Rev. B datasheet (pages 16–19), including dedicated analog inputs (IIN+, IIN−, VBAT, VTEMP), LIN transceiver pins (LIN, STI), and GPIO port (GPIO_0 through GPIO_8).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IIN+, IIN− | Differential current-sense ADC inputs | High-impedance, fully buffered inputs with programmable PGA; support ±200 mV common-mode range. |
| VBAT | Battery voltage input | Direct connection to 12 V automotive battery; routed through on-chip 24× attenuator for ADC scaling. |
| VTEMP | Temperature sensor input | Accepts external NTC/PTC or connects to on-die diode; 100–1300 mV input range referenced to AVDD/2. |
| LIN | LIN 2.0 bus interface | Single-wire physical layer I/O compliant with LIN 2.0 specification; supports dominant/recessive signaling and hardware sync. |
| GPIO_0–GPIO_8 | General-purpose digital I/O | 9-pin port configurable as inputs/outputs with flexible wake-up capability and interrupt support. |
| VDD, AGND, DGND | Power and ground | VDD accepts 3.5–18 V battery input; separate analog/digital grounds minimize noise coupling in mixed-signal operation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual simultaneous 16-bit Σ-Δ ADCs | Enables correlated current/voltage/temperature measurements for accurate SoC/SoH estimation without time skew. |
| On-chip 2.6 V LDO regulator | Provides stable analog and digital supplies from raw battery input, eliminating need for external regulators in space-constrained modules. |
| LIN 2.0 slave interface | Hardware-synchronized UART eliminates software timing overhead; supports auto-baud detection and frame error handling per LIN spec. |
| Low-power monitor mode | Consumes only 300–500 μA while continuously acquiring ADC data - ideal for always-on battery health monitoring. |
| Integrated temperature sensor | Die-temperature measurement with ±2°C accuracy enables thermal derating of battery parameters without external sensors. |
| JTAG + LIN in-circuit programming | Supports field firmware updates via LIN bus, reducing service costs and enabling over-the-air calibration patches. |
Applications
| Battery State Monitoring | Engine Control Unit (ECU) Integration |
|---|---|
Use Scenario: Continuous monitoring of starter battery voltage, cranking current, and temperature during vehicle start-stop cycles. IC Role / Device Role / Timing Role: Primary battery sensor providing synchronized current/voltage/temperature samples at 10–100 Hz for real-time SoC calculation. Use Value: Enables precise low-voltage cutoff and predictive maintenance alerts by correlating voltage sag, current surge, and thermal rise. | Use Scenario: Integration into diesel ECU for alternator load management and battery health diagnostics alongside engine timing signals. IC Role / Device Role / Timing Role: LIN-connected slave node reporting battery metrics to master ECU with <50 μs jitter for time-aligned diagnostics. Use Value: Reduces wiring harness complexity vs. CAN-based solutions while maintaining deterministic latency for safety-critical alerts. |
| 12 V Battery Management System (BMS) | Start-Stop System Supervision |
Use Scenario: Compact BMS module in mild-hybrid vehicles tracking battery degradation over 15+ year service life. IC Role / Device Role / Timing Role: Standalone sensor node performing periodic self-calibration and storing historical ADC logs in nonvolatile Flash memory. Use Value: Achieves >20-year Flash data retention and 10,000-cycle endurance for lifetime logging without external EEPROM. | Use Scenario: Monitoring battery readiness before automatic engine restart in urban driving conditions. IC Role / Device Role / Timing Role: Ultra-low-power wake-up sensor detecting voltage dip >50 mV within 2 ms of event onset using dedicated WU pin. Use Value: Guarantees reliable restarts by triggering pre-charge sequencing before voltage falls below 11.2 V threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUC7023BCPZ-62 | Same ARM7TDMI core and ADC architecture but lacks LIN interface; uses SPI-only communication. | Suitable for non-LIN systems requiring higher SPI bandwidth; requires external LIN transceiver for automotive networks. | Select when LIN is not required and PCB layout favors SPI routing over single-wire LIN bus. |
| MAX11270ETJ+ | Dedicated 24-bit Σ-Δ ADC with no integrated MCU; requires external microcontroller for processing and LIN protocol stack. | Offers higher resolution (24-bit) and lower noise (0.15 μV rms) but increases BOM count and firmware development effort. | Choose when ultra-high-precision voltage/current measurement outweighs integration benefits and system cost targets allow added components. |
Compared with ADUC7033BCPZ-8L-RL, ADUC7023BCPZ-62 trades LIN integration for SPI flexibility, while MAX11270ETJ+ delivers superior ADC performance at the cost of increased design complexity and component count - making ADUC7033BCPZ-8L-RL optimal for cost-sensitive, space-constrained automotive battery monitors needing embedded intelligence and network connectivity.
Availability
ADUC7033BCPZ-8L-RL is available at Aetrix Electronics and suitable for automotive battery management, engine control unit integration, and start-stop system supervision requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for ADUC7033BCPZ-8L-RL 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADuC7033 product line was designed specifically for automotive battery sensing and monitoring applications, integrating precision analog front-ends, robust communication interfaces, and embedded processing to replace discrete sensor + MCU + transceiver solutions in harsh under-hood environments.
FAQ
What is the maximum ADC sampling rate supported by the ADUC7033BCPZ-8L-RL?
The ADUC7033BCPZ-8L-RL supports a maximum ADC conversion rate of 8 kHz in normal operating mode with chop disabled. When chop mode is enabled for improved offset performance, the maximum rate drops to 2.6 kHz. These rates apply to both current and voltage/temperature channels operating simultaneously, as confirmed in Table 1 of the Rev. B datasheet.
Does the ADUC7033BCPZ-8L-RL require an external crystal oscillator?
No, the ADUC7033BCPZ-8L-RL does not require an external crystal oscillator. It includes two on-chip oscillators - a precision 131.072 kHz oscillator (±1% accuracy) and a low-power 131.072 kHz oscillator (±3% accuracy) - sufficient for most automotive battery monitoring tasks. An external 32.768 kHz watch crystal is optional and used only when higher timing accuracy is needed for LIN synchronization or real-time clock functions.
How does the ADUC7033BCPZ-8L-RL handle 12 V battery input for voltage channel measurement?
The ADUC7033BCPZ-8L-RL handles 12 V battery input via an integrated 24× resistive attenuator feeding the voltage channel ADC. This allows direct connection of VBAT to the IC without external voltage dividers, supporting an absolute input range of 4 V to 18 V and an effective ADC input range of 0 V to 28.8 V. The attenuator's resistor mismatch drift is specified at 3 ppm/°C, ensuring stable scaling across temperature.
Can the ADUC7033BCPZ-8L-RL operate in automotive under-hood environments?
Yes, the ADUC7033BCPZ-8L-RL is fully specified for operation from −40°C to +115°C ambient temperature and features multiple automotive-specific capabilities: built-in power supply monitor (PSM) with 6.0 V trip level, low-voltage flag (LVF) at 2.1 V, thermal shutdown at 150°C, and AEC-Q100 stress testing alignment. Its 48-lead LQFP package meets mechanical and thermal requirements for under-hood mounting.
What LIN protocol version does the ADUC7033BCPZ-8L-RL support?
The ADUC7033BCPZ-8L-RL supports LIN 2.0 protocol compliance as a slave node, with hardware synchronization, auto-baud detection, and full electrical interface compliance per LIN 2.0 specification. It does not support LIN 2.1 or later versions. The LIN interface operates over a single wire, supports baud rates from 1 kbps to 20 kbps, and includes integrated driver/receiver circuitry eliminating need for external transceivers.
ADUC7033BCPZ-8L-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 48-WFQFN Exposed Pad, CSP
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Battery Management
- Input Type:
- Logic
- Output Type:
- Logic
- Current - Supply:
- 20 mA
- Operating Temperature:
- -40°C ~ 115°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-LFCSP (7x7)
ADUC7033BCPZ-8L-RL FAQ
1.How can I place an order for ADUC7033BCPZ-8L-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADUC7033BCPZ-8L-RL 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 ADUC7033BCPZ-8L-RL reliable?
The price and inventory of ADUC7033BCPZ-8L-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADUC7033BCPZ-8L-RL is usually 5 days.
3.What payment methods are accepted for ADUC7033BCPZ-8L-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADUC7033BCPZ-8L-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADUC7033BCPZ-8L-RL?
ADUC7033BCPZ-8L-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADUC7033BCPZ-8L-RL 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 ADUC7033BCPZ-8L-RL?
For technical support, including ADUC7033BCPZ-8L-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADUC7033BCPZ-8L-RL requirements.
6.How does Aetrix verify that ADUC7033BCPZ-8L-RL is sourced from the original manufacturer or authorized distributors?
All ADUC7033BCPZ-8L-RL 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 ADUC7033BCPZ-8L-RL meets industry standards.
7.What is the process for return or replacement of ADUC7033BCPZ-8L-RL?
All ADUC7033BCPZ-8L-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADUC7033BCPZ-8L-RL, 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 ADUC7033BCPZ-8L-RL part is unused and in its original packaging.
Return procedure for ADUC7033BCPZ-8L-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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