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Texas Instruments ADS8326IBDGKT
- Part No.:
- ADS8326IBDGKT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADS8326IBDGKT.pdf
- Description:
- IC ADC 16BIT SAR 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:362
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Product details
Overview
ADS8326IBDGKT from Texas Instruments is a 16-bit, SAR analog-to-digital converter with differential input, SPI/SSI-compatible serial interface, and microPower operation (2mW at 2.7V/100kHz). It delivers ±1.5LSB max INL, 200kSPS throughput, and operates from 2.7V to 5.5V - used in isolated data acquisition modules requiring high linearity and low power.
For engineers reviewing the ADS8326IBDGKT datasheet, ADS8326IBDGKT pinout, ADS8326IBDGKT application, or ADS8326IBDGKT equivalent, key selection factors include its MSOP-8 package, ±1.5LSB integral linearity error, 200kSPS sampling rate at 2.7V, differential input architecture, and shutdown mode enabling sub-μW power-down current.
Technical Context
The ADS8326IBDGKT implements a capacitive redistribution SAR architecture with integrated sample-and-hold, supporting true differential analog inputs (+IN/–IN) referenced to an externally supplied voltage (0.1V to VDD). Its conversion timing is fully synchronous to an external DCLOCK signal, requiring 22 clock cycles per 16-bit result.
It uses CMOS/LVCMOS digital I/O compatible with both 2.7V and 5V logic levels, features CS/SHDN for chip select or hardware shutdown, and maintains 16-bit no-missing-codes performance across –40°C to +85°C. The device achieves 91.5dB SNR at 2kHz with 2.5VPP input when powered at 2.7V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees full-scale quantization granularity of 1/65536, enabling precise measurement of small signal variations. |
| INL (max) | ±1.5 LSB - ensures end-point linearity error ≤0.023% of full scale, critical for calibration-sensitive instrumentation. |
| Throughput Rate | 200 kSPS at 2.7V - supports real-time monitoring of fast transients in battery-powered sensor nodes. |
| Supply Range | 2.7V to 5.5V - allows direct interfacing with Li-ion, 3.3V, or 5V system rails without level-shifting. |
| Power Dissipation | 2 mW at 2.7V/100kHz - enables >1-year operation on coin-cell batteries in low-duty-cycle remote sensing. |
| Reference Range | 0.1V to VDD - permits flexible scaling (e.g., 2.5V ref for 0–2.5V input or 5V ref for 0–5V input). |
| Interface | SPI/SSI-compatible serial - simplifies host MCU integration using standard peripheral libraries without custom protocol stacks. |
Pinout & Package
ADS8326IBDGKT is housed in an MSOP-8 package (DGK), 3.0mm × 3.0mm × 1.0mm, with exposed thermal pad internally connected to substrate (recommended to connect to analog ground).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF | Reference input | Accepts external reference voltage (0.1V to VDD); sets full-scale range and directly impacts gain accuracy. |
| +IN | Analog input (noninverting) | Differential input node; sampled during acquisition phase; common-mode range: –0.3V to 0.5V. |
| –IN | Analog input (inverting) | Differential input node; forms differential pair with +IN; must be biased within specified common-mode window. |
| GND | Ground | Analog ground reference for internal circuitry and reference path; separation from digital ground reduces noise coupling. |
| CS/SHDN | Digital control input | Active-low chip select; driven high to enter shutdown mode (0.3μW typical power consumption). |
| DOUT | Digital output | MSB-first serial data output; tri-states when CS is high; compatible with 3.3V/5V CMOS logic. |
| DCLOCK | Digital clock input | Asynchronous master clock (24kHz–4.8MHz); defines conversion speed and data transfer timing. |
| VDD | Power supply | Single supply for analog and digital sections; decoupling capacitor required near pin for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit no missing codes | Guaranteed over full temperature and supply range - eliminates code gaps in precision measurement systems. |
| Differential input architecture | Rejects common-mode noise up to 0.5V offset - improves accuracy in electrically noisy industrial environments. |
| MicroPower shutdown mode | 0.3μW typical power consumption - extends battery life in intermittent-sampling applications like structural health monitoring. |
| Pin-compatible upgrade path | Direct replacement for ADS7816/ADS7822 (12-bit) and ADS8325 (16-bit) - enables resolution upgrade without PCB redesign. |
| Flexible reference input | Supports 0.1V–VDD reference voltage - allows optimization of dynamic range for low-voltage sensors (e.g., thermocouples, strain gauges). |
Applications
| Battery-Powered Sensor Node | Isolated Industrial Data Acquisition |
|---|---|
Use Scenario: Remote vibration monitoring on rotating machinery using MEMS accelerometers powered by lithium-thionyl chloride batteries. IC Role / Device Role / Timing Role: ADC digitizes differential accelerometer outputs at 200kSPS; internal S/H captures transient peaks; SPI interface streams data to low-power MCU. Use Value: 2mW active power and 0.3μW shutdown enable multi-year deployment; ±1.5LSB INL ensures accurate amplitude tracking for predictive maintenance algorithms. | Use Scenario: High-voltage motor drive feedback system where current/voltage sensing occurs on the 600V DC bus side, isolated via optocouplers or digital isolators. IC Role / Device Role / Timing Role: ADC samples isolated analog signals; differential input rejects common-mode switching noise; serial interface crosses isolation barrier with minimal pins. Use Value: 91.5dB SNR at 2kHz and 200kSPS throughput support Class A power quality analysis; 2.7V–5.5V supply accommodates isolated DC-DC output variations. |
| Remote Environmental Monitoring | Robotics Joint Torque Sensing |
Use Scenario: Solar-powered weather station measuring temperature, humidity, and barometric pressure across wide temperature ranges (–40°C to +85°C). IC Role / Device Role / Timing Role: ADC digitizes conditioned sensor outputs; operates from 3.3V rail; uses internal S/H to reject EMI during wireless transmission bursts. Use Value: Guaranteed 16-bit no missing codes and ±1.5LSB INL ensure traceable calibration over temperature; low power extends operational uptime between solar recharge cycles. | Use Scenario: Compact robotic arm with space-constrained joint modules requiring high-resolution torque feedback from strain gauge bridges. IC Role / Device Role / Timing Role: ADC interfaces directly to Wheatstone bridge outputs; differential input rejects bridge excitation noise; MSOP-8 footprint minimizes PCB area. Use Value: 0.5mV max offset and ±0.4LSB DNL enable sub-0.1% torque measurement accuracy; 3.0mm × 3.0mm package fits tight mechanical envelopes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8325IBDRBT | SON-8 package (3×3mm), same ±1.5LSB INL and 200kSPS, but higher 4.8mW power at 2.7V/200kHz. | Preferred where board-level thermal dissipation or PCB assembly constraints favor QFN over MSOP. | Select ADS8325IBDRBT if thermal pad soldering capability exists and layout density favors QFN. |
| ADS8860IDRCT | 16-bit SAR ADC with 1MSPS throughput, ±1.5LSB INL, but requires 3.3V only and consumes 4.5mW at 1MSPS - no shutdown mode. | Suitable for high-speed data loggers where continuous sampling outweighs battery life concerns. | Choose ADS8860IDRCT only when >200kSPS is mandatory and power budget allows ~2× higher active consumption. |
Compared with ADS8325IBDRBT, ADS8326IBDGKT offers identical DC accuracy in a smaller MSOP-8 footprint with lower active power; versus ADS8860IDRCT, it trades speed for microPower operation and shutdown capability - making it optimal for energy-constrained, medium-speed sensing.
Availability
ADS8326IBDGKT is available at Aetrix Electronics and suitable for battery-operated systems, isolated data acquisition, and remote environmental monitoring requiring stable component supply and long-term manufacturability.
Supply support for ADS8326IBDGKT 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The ADS8326 product line targets precision, low-power data acquisition in space- and energy-constrained systems - designed specifically for portable instrumentation, isolated sensing, and remote telemetry where 16-bit accuracy must coexist with microPower operation.
FAQ
What is the maximum sampling rate of the ADS8326IBDGKT at 2.7V supply?
The ADS8326IBDGKT achieves a maximum throughput rate of 200 kSPS when operated at 2.7V supply voltage and 4.8MHz DCLOCK frequency. This is confirmed in the Electrical Characteristics table under VDD = +2.7V conditions, where the Throughput Rate parameter is specified as 200 kSPS. At 5V, the device supports up to 250 kSPS.
Does the ADS8326IBDGKT support true differential input operation?
Yes, the ADS8326IBDGKT supports true differential input operation via dedicated +IN and –IN pins. The device accepts differential input voltages from 0V to VREF with a common-mode range of –0.3V to +0.5V. This architecture provides inherent common-mode noise rejection, which is essential for accurate measurements in electrically noisy environments such as motor drives or industrial PLCs.
What is the power consumption of ADS8326IBDGKT in shutdown mode?
The ADS8326IBDGKT consumes 0.3 μW typical power in shutdown mode when CS/SHDN is driven high and VDD = 2.7V. This ultra-low standby power is specified in the Electrical Characteristics section under "Power dissipation in power-down" and enables multi-year battery life in intermittently active sensor nodes and remote monitoring devices.
Is the ADS8326IBDGKT pin-compatible with other TI SAR ADCs?
Yes, the ADS8326IBDGKT is pin-compatible with the ADS7816, ADS7822, ADS7826, ADS7827, ADS7829, ADS8320, and ADS8325 in the same MSOP-8 (DGK) package. This compatibility allows direct upgrade from 12-bit to 16-bit resolution without PCB layout changes - a key design advantage documented in the device's Features list and Ordering Information table.
What reference voltage range does the ADS8326IBDGKT support?
The ADS8326IBDGKT supports an external reference voltage range from 0.1V to VDD. This flexibility allows users to optimize dynamic range for specific sensor outputs - for example, using a 2.5V reference with a 2.7V supply for low-voltage bridge sensors, or a 5V reference with a 5V supply for full-scale industrial voltage monitoring - all while maintaining specified linearity and noise performance.
ADS8326IBDGKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 1
- Input Type:
- Pseudo-Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- 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:
- 8-VSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8326IBDGKT FAQ
1.How can I place an order for ADS8326IBDGKT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8326IBDGKT 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 ADS8326IBDGKT reliable?
The price and inventory of ADS8326IBDGKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8326IBDGKT is usually 5 days.
3.What payment methods are accepted for ADS8326IBDGKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8326IBDGKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8326IBDGKT?
ADS8326IBDGKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8326IBDGKT 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 ADS8326IBDGKT?
For technical support, including ADS8326IBDGKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8326IBDGKT requirements.
6.How does Aetrix verify that ADS8326IBDGKT is sourced from the original manufacturer or authorized distributors?
All ADS8326IBDGKT 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 ADS8326IBDGKT meets industry standards.
7.What is the process for return or replacement of ADS8326IBDGKT?
All ADS8326IBDGKT units undergo pre-shipment inspection (PSI). If there is an issue with ADS8326IBDGKT, 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 ADS8326IBDGKT part is unused and in its original packaging.
Return procedure for ADS8326IBDGKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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