My Inquiry
My Account
Texas Instruments ADS8326IDRBT
- Part No.:
- ADS8326IDRBT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
ADS8326IDRBT.pdf
- Description:
- IC ADC 16BIT SAR 8SON
- Quantity:
- Payment:
- Shipping:
Inventory:1,724
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADS8326IDRBT 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, 14.35-bit ENOB at 10kHz, and supports 0.1V–VDD reference voltage range. It serves precision data acquisition in battery-powered remote sensors and isolated industrial monitoring systems.
For engineers reviewing the ADS8326IDRBT datasheet, ADS8326IDRBT pinout, ADS8326IDRBT application, or ADS8326IDRBT equivalent, key selection criteria include guaranteed 16-bit no-missing-codes performance across full supply range, low 30μVRMS noise, differential input common-mode tolerance (–0.3V to 0.5V), and SON-8 package thermal pad handling for analog ground isolation.
Technical Context
The ADS8326IDRBT implements a capacitive redistribution SAR architecture with integrated sample-and-hold, enabling single-cycle 16-bit conversion using 22–24 DCLOCK cycles. Its internal CDAC array and comparator operate synchronously with externally supplied DCLOCK, supporting throughput rates up to 250kSPS at 5V or 200kSPS at 2.7V.
It features dual-mode digital interface: CS/SHDN pin controls chip select (active-low) and shutdown (high), while DOUT outputs LSB-first straight binary data synchronized to DCLOCK falling edge. The device maintains stable DC accuracy (±1mV offset, ±12LSB gain error) and AC performance (91dB SNR at 2kHz) across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees monotonic transfer function and no missing codes over full supply range. |
| INL / DNL | ±1.5LSB max / ±1LSB max - ensures high-fidelity signal reconstruction in closed-loop control and vibration analysis. |
| Throughput Rate | 200kSPS at 2.7V, 250kSPS at 5V - enables real-time sampling of 60kHz bandwidth signals per Nyquist criterion. |
| Supply Range | 2.7V to 5.5V - supports direct interfacing with both 3.3V and 5V logic domains without level-shifting. |
| Reference Range | 0.1V to VDD - allows flexible scaling for low-voltage sensor outputs or high-precision full-scale utilization. |
| Power Dissipation | 2mW at 2.7V/100kHz - extends battery life in portable instrumentation with >99% duty-cycled power-down mode. |
| Input Type | Differential (±IN) - rejects common-mode noise in motor drives and industrial fieldbus environments. |
Pinout & Package
ADS8326IDRBT uses an 8-pin SON (DRB) package with exposed thermal pad, footprint-compatible with 3×3 mm QFN. The thermal pad is internally connected to substrate and may be tied to analog ground or left floating-must remain isolated from digital ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 REF | Reference Input | Accepts 0.1V–VDD reference; 24pF capacitance requires low-impedance source for stability. |
| 2 +IN | Analog Input (Noninverting) | Differential input node; operates with common-mode range –0.3V to 0.5V relative to GND. |
| 3 –IN | Analog Input (Inverting) | Differential input node; matched to +IN for CMRR optimization in noisy environments. |
| 4 GND | Analog Ground | Primary return path for analog circuitry; must be star-connected to minimize coupling into ADC core. |
| 5 CS/SHDN | Digital Control Input | Active-low chip select; driven high to enter 0.3μW power-down mode with fast wake-up. |
| 6 DOUT | Digital Output | CMOS/LVCMOS-compatible serial output; LSB-first, tri-stated when CS high. |
| 7 DCLOCK | Digital Clock Input | Synchronizes conversion timing; accepts 24kHz–6MHz clock with 200ns min pulse width. |
| 8 VDD | Power Supply | Supplies analog and digital sections; decoupling capacitor required within 1cm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit no missing codes | Guaranteed over full temperature and supply range - eliminates code gaps in critical position feedback loops. |
| MicroPower at low throughput | 0.2mW average at 10kHz - enables decade-long operation on coin-cell batteries in wireless sensor nodes. |
| Differential input architecture | 20pF differential input capacitance and 50Ω on-resistance - minimizes settling error during acquisition phase. |
| SPI/SSI-compatible interface | Single-wire serial output with CS-controlled tri-state - reduces PCB routing complexity vs parallel ADCs. |
| Flexible reference support | 0.1V–VDD range with 5GΩ input resistance - permits use of internal bandgap, external precision VREF, or ratiometric sensor excitation. |
Applications
| Battery-Powered Remote Sensor Node | Isolated Industrial Data Acquisition |
|---|---|
Use Scenario: Wireless temperature/humidity node powered by CR2032 battery, transmitting readings every 10 seconds via BLE. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned sensor outputs; samples at 100Hz with automatic power-down between conversions. Use Value: 2mW active power and 0.3μW shutdown current extend battery life beyond 5 years; differential input rejects EMI from nearby switching regulators. |
Use Scenario: DIN-rail mounted PLC module acquiring 4–20mA current loop signals across galvanic isolation barrier. IC Role / Device Role / Timing Role: Isolated-side ADC converting amplified, filtered analog inputs; synchronized to isolated clock domain via optocoupler. Use Value: ±1.5LSB INL ensures <0.025% measurement accuracy; 0.1V–5.5V reference range accommodates isolated VREF generation schemes. |
| Simultaneous Multichannel Vibration Monitoring | High-Accuracy Robotics Joint Feedback |
Use Scenario: 8-channel vibration analyzer capturing accelerometer data from rotating machinery at 50kSPS per channel. IC Role / Device Role / Timing Role: One ADS8326IDRBT per channel, sharing master clock and CS lines; daisy-chained DOUT for compact layout. Use Value: 200kSPS throughput supports 60kHz FSBW; 14.35-bit ENOB preserves harmonic content for FFT-based fault detection. |
Use Scenario: Servo drive board measuring motor back-EMF and current for field-oriented control in collaborative robot joints. IC Role / Device Role / Timing Role: Dual ADC configuration (one for voltage, one for current) with matched timing for synchronous sampling. Use Value: Differential input rejects PWM noise; ±1mV offset error ensures <0.01° angular resolution in resolver-less commutation. |
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 |
|---|---|---|---|
| ADS8325IDRBT | Same 16-bit SAR core but fixed 5V-only supply (4.75–5.25V); no 2.7V operation. | Limited to 5V systems; lacks low-voltage flexibility for mixed-supply designs. | Select when system runs exclusively at 5V and requires identical timing/performance with simplified supply design. |
| ADS8860IDRCT | 16-bit SAR with 1MSPS throughput, SPI interface, and 2.7–3.6V supply only; no 5V support. | Higher speed but narrower supply range; different pinout (10-pin VSSOP). | Choose for battery-powered high-speed applications where 1MSPS is needed and 5V compatibility is unnecessary. |
Compared with ADS8325IDRBT and ADS8860IDRCT, the ADS8326IDRBT uniquely balances wide supply range (2.7–5.5V), guaranteed no-missing-codes performance, and ultra-low power at sub-200kSPS rates-making it optimal for cost-sensitive, multi-voltage industrial and portable systems requiring long-term stability.
Availability
ADS8326IDRBT is available at Aetrix Electronics and suitable for battery-operated systems, isolated data acquisition modules, and simultaneous multichannel instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADS8326IDRBT 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 expertise in precision data converters and industrial-grade IC design.
The ADS8326IDRBT belongs to TI's precision SAR ADC product line, engineered for high-resolution, low-power data acquisition in harsh environments-including remote sensing, motor control, and test equipment.
FAQ
What is the maximum sampling rate supported by the ADS8326IDRBT?
The ADS8326IDRBT achieves 250kSPS at 5V supply and 200kSPS at 2.7V supply. This is determined by the minimum DCLOCK frequency (24kHz) and maximum (6MHz at 5V or 4.8MHz at 2.7V), with each conversion requiring 22–24 clock cycles. At 200kSPS, the ADS8326IDRBT consumes only 2mW, making it ideal for power-constrained applications.
Does the ADS8326IDRBT require an external reference voltage?
No-the ADS8326IDRBT accepts an external reference voltage applied to the REF pin, but it does not include an internal reference. The reference can range from 0.1V to VDD, allowing flexibility with precision external references (e.g., REF5025) or ratiometric configurations. Reference input resistance is 5GΩ, and input capacitance is 24pF, necessitating a low-impedance driver for optimal performance.
How does the CS/SHDN pin function on the ADS8326IDRBT?
The CS/SHDN pin on the ADS8326IDRBT serves dual functions: pulled low to enable serial communication and initiate conversions; driven high to place the device in ultra-low-power shutdown mode (0.3μW at 2.7V). Wake-up time from shutdown is negligible-conversion begins on the next valid DCLOCK edge after CS returns low-enabling rapid duty-cycled operation in intermittent-sampling systems.
Can the ADS8326IDRBT interface directly with a 3.3V microcontroller SPI port?
Yes-the ADS8326IDRBT supports LVCMOS logic levels at 2.7–3.6V supply, with VIH = 2V (min) and VIL = 0.8V (max) when VDD = 2.7V. Its DOUT output is CMOS-compatible and drives 4.44V at 4.5V VDD, so level translation is unnecessary for 3.3V MCU interfaces. Ensure DCLOCK timing meets tSUCS ≥20ns and tHDO ≤15ns for reliable data capture.
What is the significance of the thermal pad on the ADS8326IDRBT SON-8 package?
The exposed thermal pad on the ADS8326IDRBT's DRB package is internally connected to the silicon substrate and must be handled per TI's layout guidance: it may be connected to analog ground (recommended for noise-sensitive applications) or left floating-but must never be tied to digital ground to prevent noise coupling into the ADC core. Proper solder paste stencil design and reflow profile ensure mechanical reliability and thermal performance.
ADS8326IDRBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 8-VDFN Exposed Pad
- 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-SON (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8326IDRBT FAQ
1.How can I place an order for ADS8326IDRBT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8326IDRBT 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 ADS8326IDRBT reliable?
The price and inventory of ADS8326IDRBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8326IDRBT is usually 5 days.
3.What payment methods are accepted for ADS8326IDRBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8326IDRBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8326IDRBT?
ADS8326IDRBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8326IDRBT 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 ADS8326IDRBT?
For technical support, including ADS8326IDRBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8326IDRBT requirements.
6.How does Aetrix verify that ADS8326IDRBT is sourced from the original manufacturer or authorized distributors?
All ADS8326IDRBT 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 ADS8326IDRBT meets industry standards.
7.What is the process for return or replacement of ADS8326IDRBT?
All ADS8326IDRBT units undergo pre-shipment inspection (PSI). If there is an issue with ADS8326IDRBT, 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 ADS8326IDRBT part is unused and in its original packaging.
Return procedure for ADS8326IDRBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADS8326IDRBT Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
