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Texas Instruments ADS7828EIPWRQ1
- Part No.:
- ADS7828EIPWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADS7828EIPWRQ1.pdf
- Description:
- IC ADC 12BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,394
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Product details
Overview
ADS7828EIPWRQ1 from Texas Instruments is an automotive-qualified 12-bit, 8-channel SAR analog-to-digital converter with I²C interface, internal 2.5-V reference, 50-kHz maximum throughput, and operation from 2.7 V to 3.6 V. It performs single-ended or differential sampling across eight analog inputs (CH0–CH7), supports standard/fast/high-speed I²C modes, and features no missing codes - used in automotive battery management systems for precise voltage monitoring under harsh thermal conditions.
For engineers reviewing the ADS7828EIPWRQ1 datasheet, ADS7828EIPWRQ1 pinout, ADS7828EIPWRQ1 application, or ADS7828EIPWRQ1 equivalent, key selection considerations include its AEC-Q100 Grade 2 qualification (–40°C to +85°C), TSSOP-16 package compatibility with space-constrained automotive PCBs, 12-bit monotonicity guarantee, and I²C address configuration via A0/A1 pins for multi-device bus topology.
Technical Context
The ADS7828EIPWRQ1 implements a capacitive redistribution successive approximation register (SAR) architecture with integrated sample-and-hold, fabricated on a 0.6-µm CMOS process. Its internal asynchronous clock powers down the ADC core between conversions, enabling micropower operation - quiescent current as low as 60 µA in I²C standard mode.
It supports three I²C bus speeds (100 kHz, 400 kHz, 3.4 MHz) with open-drain SDA/SCL signaling and slave addressing via A0/A1 pins. The analog front-end includes an 8-channel multiplexer, COM common input, and REFIN/REFOUT pin that either sources the internal 2.5-V reference or accepts external references from 50 mV to +VDD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit SAR with no missing codes - guarantees monotonic output across full temperature range. |
| Sampling Rate | 50 kHz max throughput in high-speed I²C mode - enables real-time monitoring of fast-changing sensor signals. |
| Reference | Internal 2.5-V ±15 ppm/°C drift reference - eliminates need for external precision reference in 2.7–3.6-V systems. |
| Input Channels | 8 single-ended or 4 differential analog inputs (CH0–CH7) with COM common terminal - supports multi-sensor data acquisition from one IC. |
| Supply Range | 2.7 V to 3.6 V - compatible with automotive 3.3-V rail and battery-backed subsystems. |
| I²C Compatibility | Standard (100 kHz), Fast (400 kHz), and High-Speed (3.4 MHz) modes - allows flexible system-level timing and noise immunity trade-offs. |
| Quiescent Current | 60 µA at 100 kHz I²C - enables ultra-low-power operation in always-on vehicle subsystems. |
Pinout & Package
TSSOP-16 package (6.40 mm × 5.00 mm), thermally enhanced for automotive ambient operation up to +85°C; JEDEC MS-013AC compliant; 0.65-mm pitch; exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 | Analog input channels | Support single-ended or differential configurations; CH0/CH1 form first differential pair, CH2/CH3 second, etc. |
| COM | Common analog reference | Serves as return path for differential measurements or ground reference for single-ended inputs. |
| REFIN/REFOUT | Reference voltage terminal | Outputs internal 2.5-V reference or accepts external reference (50 mV to +VDD); impedance 110 Ω when active. |
| GND | Analog ground | Separate analog return path - must be routed independently from digital ground to preserve 12-bit accuracy. |
| +VDD | Power supply | Single 2.7–3.6-V supply; powers analog and digital sections - decoupling with 1-µF ceramic capacitor required. |
| SDA / SCL | I²C bidirectional data/clock | Open-drain pins requiring external pull-ups; support 3.4-MHz high-speed mode with ≤400-pF bus capacitance. |
| A0 / A1 | Slave address bits | Set LSBs of 7-bit I²C address (base 0x90); enable up to four ADS7828EIPWRQ1 devices on same bus. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 2 qualification | Validated for automotive use from –40°C to +85°C ambient - meets reliability and stress-test requirements for head units and BMS. |
| Internal 2.5-V reference | Drift ≤15 ppm/°C and output impedance 110 Ω - enables stable 12-bit conversion without external reference components. |
| Channel-to-channel isolation | 120 dB - prevents crosstalk between adjacent channels during simultaneous multi-sensor sampling. |
| Low-power I²C operation | 60 µA quiescent current in standard mode - extends battery life in always-on telematics modules. |
| Differential linearity error | ±1 LSB max - ensures accurate representation of linear transducer outputs (e.g., O₂ sensors, NOx sensors). |
Applications
| Automotive Battery Management Systems | Heads-Up Display (HUD) Power Monitoring |
|---|---|
|
Use Scenario: Real-time cell voltage and pack current sensing in 12-V and 48-V hybrid vehicle battery packs. IC Role / Device Role / Timing Role: 12-bit ADC digitizes voltage across shunt resistors and cell taps via multiplexed CH0–CH7; internal reference ensures consistent scaling across temperature. Use Value: Enables ±10-mV measurement accuracy over –40°C to +85°C, supporting ISO 26262 ASIL-B functional safety diagnostics. |
Use Scenario: Monitoring backlight LED driver voltage, display supply rails, and ambient light sensor output in HUD control modules. IC Role / Device Role / Timing Role: Simultaneous sampling of multiple low-noise analog sensors using COM-referenced differential pairs (e.g., CH0/CH1 for photodiode signal). Use Value: 33-µV RMS noise and 82-dB PSRR suppress switching noise from nearby DC/DC converters, preserving display stability. |
| Automotive Head Units | Oxygen (O₂/Lambda) Sensor Interface |
|
Use Scenario: Analog front-end for microphone inputs, tuner IF signals, and power supply health monitoring in infotainment head units. IC Role / Device Role / Timing Role: I²C slave with configurable A0/A1 address - integrates into existing microcontroller-based audio subsystems without bus contention. Use Value: 50-kHz sampling rate captures audio-band signals up to 25 kHz; no missing codes prevents audible distortion artifacts. |
Use Scenario: Signal conditioning and digitization of narrowband zirconia O₂ sensor outputs in exhaust gas recirculation (EGR) systems. IC Role / Device Role / Timing Role: Single-ended CH2 input with internal 2.5-V reference scales 0–1-V sensor output to full 12-bit range; COM tied to sensor ground. Use Value: ±1-LSB integral linearity error ensures stoichiometric air/fuel ratio detection within ±0.01 λ - critical for emissions compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit automotive ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7828IPWR | Industrial-grade (–40°C to +85°C), identical pinout and electrical specs but lacks AEC-Q100 qualification and automotive temp testing. | Not approved for safety-critical automotive functions; suitable for non-automotive industrial data loggers. | Select only if AEC-Q100 compliance is not required and cost sensitivity outweighs qualification assurance. |
| MAX11612ETE+ | 12-bit, 8-channel, SPI interface (not I²C); 100-kSPS max; internal 2.048-V reference; TDFN-16 package. | Requires SPI host controller and level-shifting for 3.3-V systems; smaller footprint but no automotive qualification. | Choose when higher throughput or board space reduction is prioritized over I²C compatibility and automotive certification. |
Compared with ADS7828IPWR and MAX11612ETE+, the ADS7828EIPWRQ1 uniquely combines AEC-Q100 Grade 2 qualification, I²C interface, internal 2.5-V reference, and TSSOP-16 packaging - making it the only drop-in solution for automotive designs requiring validated reliability and bus compatibility without redesign.
Availability
ADS7828EIPWRQ1 is available at Aetrix Electronics and suitable for automotive battery management systems, heads-up display power monitoring, and oxygen sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADS7828EIPWRQ1 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of automotive IC design expertise and AEC-Q100-compliant manufacturing processes.
The ADS7828EIPWRQ1 belongs to TI's automotive-qualified precision data acquisition portfolio, engineered specifically for reliable sensor interfacing in safety-critical vehicle subsystems including powertrain, chassis, and body electronics.
FAQ
What is the operating temperature range for the ADS7828EIPWRQ1?
The ADS7828EIPWRQ1 is qualified per AEC-Q100 Grade 2 and operates from –40°C to +85°C ambient temperature. This range is validated across all electrical parameters in the datasheet, including offset error, gain error, and reference drift - ensuring consistent 12-bit performance in under-hood and cabin-mounted automotive applications where thermal cycling occurs.
Does the ADS7828EIPWRQ1 require an external reference voltage?
No - the ADS7828EIPWRQ1 includes an internal 2.5-V reference with ±15 ppm/°C drift, fully functional across its 2.7–3.6-V supply range. When using a 2.7-V supply, this internal reference provides full-scale input range (0 V to +VDD). External reference is optional and only needed if higher precision or different reference voltage (e.g., 5 V) is required.
How many I²C addresses can be configured on the ADS7828EIPWRQ1?
The ADS7828EIPWRQ1 supports four unique I²C slave addresses via pins A0 and A1, which set the two least-significant bits of the 7-bit address (base 0x90). Valid combinations are 0x90, 0x92, 0x94, and 0x96 - enabling up to four ADS7828EIPWRQ1 devices on the same I²C bus without address conflict.
What is the maximum sampling rate achievable with the ADS7828EIPWRQ1?
The ADS7828EIPWRQ1 achieves a maximum throughput of 50 kSPS in high-speed I²C mode (3.4 MHz SCL clock). At lower I²C speeds - 400 kHz (Fast mode) and 100 kHz (Standard mode) - throughput drops to 8 kSPS and 2 kSPS respectively, due to protocol overhead and conversion time fixed at 6 µs per sample.
Is the ADS7828EIPWRQ1 pin-compatible with other members of the ADS7828 family?
Yes - the ADS7828EIPWRQ1 shares identical TSSOP-16 pinout, function mapping, and electrical behavior with ADS7828IPWR and ADS7828EBPWRQ1. Differences are limited to qualification grade (AEC-Q100 vs industrial) and INL/DNL specifications (±1 LSB vs ±0.5 LSB), not physical or logical interface compatibility.
ADS7828EIPWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 50k
- Number of Inputs:
- 8
- Input Type:
- Differential, Single Ended
- Data Interface:
- I2C
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V, 5V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V, 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
ADS7828EIPWRQ1 FAQ
1.How can I place an order for ADS7828EIPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS7828EIPWRQ1 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 ADS7828EIPWRQ1 reliable?
The price and inventory of ADS7828EIPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7828EIPWRQ1 is usually 5 days.
3.What payment methods are accepted for ADS7828EIPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS7828EIPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS7828EIPWRQ1?
ADS7828EIPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS7828EIPWRQ1 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 ADS7828EIPWRQ1?
For technical support, including ADS7828EIPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7828EIPWRQ1 requirements.
6.How does Aetrix verify that ADS7828EIPWRQ1 is sourced from the original manufacturer or authorized distributors?
All ADS7828EIPWRQ1 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 ADS7828EIPWRQ1 meets industry standards.
7.What is the process for return or replacement of ADS7828EIPWRQ1?
All ADS7828EIPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ADS7828EIPWRQ1, 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 ADS7828EIPWRQ1 part is unused and in its original packaging.
Return procedure for ADS7828EIPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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