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Texas Instruments ADS8330IBPW
- Part No.:
- ADS8330IBPW
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADS8330IBPW.pdf
- Description:
- IC ADC 16BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,197
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Product details
Overview
ADS8330IBPW from Texas Instruments is a 16-bit, 1-MHz dual-channel unipolar SAR analog-to-digital converter with integrated 2:1 input MUX, programmable TAG bit output, and SPI/DSP-compatible serial interface. It operates from 2.7 V to 5.5 V analog supply, delivers ±1.75 LSB max INL and 93 dB SNR at 10 kHz, and targets precision data acquisition in industrial sensor interfaces.
For engineers reviewing the ADS8330IBPW datasheet, ADS8330IBPW pinout, ADS8330IBPW application, or ADS8330IBPW equivalent, key selection criteria include dual-channel auto/manual channel select mode, 16-bit NMC over temperature, built-in conversion clock (22.3 MHz typical), deep power-down (2 nA), and TSSOP-16 package compatibility with daisy-chain operation.
Technical Context
The ADS8330IBPW implements a capacitor-based SAR architecture with inherent sample-and-hold, supporting both manual and auto-triggered conversions via CONVST. Its dual-input MUX (+IN0/+IN1) and COM terminal enable flexible single-ended or pseudo-differential signal routing without external switching.
It features three programmable power-down modes (deep, nap, auto-nap), configurable EOC/INT polarity and duration, and supports chain-mode daisy chaining via CDI/SDO pins. The device uses an internal CCLK derived from SCLK (fCCLK = fSCLK/2) and accepts external reference inputs from 0.3 V to +VA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full code coverage across temperature. |
| Sampling Rate | 1 MSPS at +VA ≥ 3 V; 900 kSPS at +VA = 2.7 V - enables high-speed acquisition while maintaining low power at reduced supply. |
| INL / DNL | ±1.75 LSB max INL, ±1 LSB max DNL - ensures accurate amplitude fidelity for precision measurement systems. |
| SNR / THD | 93 dB SNR, –102 dB THD at 10 kHz - supports high dynamic range applications like vibration analysis and audio test equipment. |
| Power Dissipation | 15.5 mW at 1 MSPS, +VA = 3 V, +VBD = 1.8 V - optimized for battery-powered or thermally constrained embedded systems. |
| Reference Range | 0.3 V to +VA (up to 5.5 V) - allows flexible scaling with external references including 2.5 V or 5 V sources. |
| Operating Temp | –40°C to +85°C - fully specified for industrial environments without derating. |
Pinout & Package
TSSOP-16 package with exposed thermal pad (internally connected to substrate); pin 1 marked by dot; NC pins must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+VA) | Analog supply input | 2.7–5.5 V analog rail; powers SAR core, reference buffer, and input stage. |
| 2 (+IN1) | Second analog input | Noninverting input for second channel; used with COM for pseudo-differential configuration. |
| 3 (+IN0) | First analog input | Primary noninverting input; selected automatically or manually depending on channel mode. |
| 4 (EOC/INT/CDI) | Status/data input/output | Configurable as end-of-conversion flag, interrupt, or daisy-chain data input in multi-device systems. |
| 5 (FS/CS) | Frame sync / chip select | Active-low SPI slave select; also serves as frame sync for TI DSP interfaces. |
| 6 (SDI) | Serial data input | Accepts configuration commands (e.g., reset, channel select, TAG enable) and supports software reset. |
| 7 (SDO) | Serial data output | 16-bit straight-binary output with optional TAG bit; tri-state controlled by CS. |
| 8 (BDGND) | Digital interface ground | Separate ground for digital I/O to minimize noise coupling into analog section. |
| 9 (CONVST) | Conversion start trigger | Edge-sensitive control that freezes sample-and-hold and initiates conversion on next internal clock edge. |
| 10 (+VBD) | Digital I/O supply | 1.65–5.5 V logic supply; sets VIH/VIL thresholds and drives SDO/SDI levels independently of +VA. |
| 11 (AGND) | Analog ground | Reference for analog inputs, reference inputs, and internal ADC circuitry; must be star-connected to minimize noise. |
| 12 (REF+) | Positive reference input | Accepts external voltage reference up to +VA; defines full-scale range as 0 V to VREF. |
| 13 (REF–) | Negative reference input | Connected to AGND via dedicated via; establishes reference common point for unipolar operation. |
| 14 (COM) | Common input terminal | Shared inverting input for both channels; typically tied to AGND for single-ended use. |
| 15 (SCLK) | Serial clock input | Up to 42 MHz clock; provides timing for SPI transfers and generates internal CCLK (fCCLK = fSCLK/2). |
| 16 (NC) | No internal connection | Unbonded pin; must be left floating or tied to AGND per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel 2:1 MUX with auto/manual select | Enables time-multiplexed sampling of two sensors without external multiplexer, reducing BOM and board area. |
| Programmable TAG bit output | Appends channel identifier (0/1) to each 16-bit conversion result, eliminating need for external tracking logic in multi-channel systems. |
| Built-in conversion clock (CCLK) | Eliminates requirement for external clock generator; internal CCLK derived from SCLK simplifies system timing design. |
| Deep power-down mode (2 nA) | Reduces standby current by >6 orders of magnitude vs active mode, enabling ultra-low-power wake-on-event architectures. |
| Daisy-chain capability via CDI/SDO | Allows synchronous readout of multiple ADS8330IBPW devices using single SCLK/CS lines, minimizing MCU GPIO usage. |
Applications
| Industrial Process Monitoring | Medical Sensor Interface |
|---|---|
Use Scenario: Continuous monitoring of pressure, temperature, and flow transducers in PLC-controlled factory lines. IC Role / Device Role / Timing Role: Dual-channel ADC digitizing two analog sensor outputs with synchronized sampling and automatic channel sequencing. Use Value: 16-bit resolution and ±1.75 LSB INL ensure traceable calibration compliance; 1-MHz throughput supports real-time closed-loop control updates. | Use Scenario: High-fidelity acquisition of biopotential signals (ECG, EEG) in portable diagnostic equipment. IC Role / Device Role / Timing Role: Precision front-end ADC converting low-amplitude, low-noise analog waveforms with minimal added distortion. Use Value: 93 dB SNR and –102 dB THD preserve signal integrity; unipolar 0–VREF input simplifies biasing for AC-coupled biosignal paths. |
| Magnetometer Data Acquisition | Automated Test Equipment |
Use Scenario: Digitizing differential outputs from fluxgate or Hall-effect magnetometers in navigation and geophysical survey tools. IC Role / Device Role / Timing Role: Pseudo-differential converter using +IN0/+IN1 and COM terminals to reject common-mode noise from magnetic field interference. Use Value: 101 dB input channel isolation at 50 kHz prevents crosstalk between orthogonal axes; 70 dB CMRR suppresses EMI-induced offsets. | Use Scenario: High-speed stimulus-response testing of analog circuits and components in benchtop ATE platforms. IC Role / Device Role / Timing Role: Fast-sampling ADC capturing transient responses with precise timestamping via EOC/INT signaling. Use Value: 5 ns aperture delay and 10 ps aperture jitter enable sub-ns timing accuracy; 16-bit NMC ensures repeatable pass/fail decisions across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8329IBPW | Single-channel variant; identical pinout, specs, and power profile but lacks MUX and TAG functionality. | Suitable only for single-sensor systems; cannot replace dual-input sequencing or channel tagging requirements. | Select when only one analog input is needed and board layout re-use of TSSOP-16 footprint is prioritized. |
| AD7682BCPZ | 16-bit, 250 kSPS, pseudo-differential dual input; SPI interface but no built-in CCLK or TAG bit; requires external conversion control. | Limited throughput and no auto-channel mode; better suited for lower-speed, lower-power applications where timing simplicity outweighs speed. | Choose for cost-sensitive designs requiring ADI ecosystem compatibility and relaxed sampling rate requirements. |
Compared with ADS8329IBPW and AD7682BCPZ, the ADS8330IBPW uniquely combines dual-channel MUX, programmable TAG output, and 1-MSPS throughput in a pin-compatible TSSOP-16 package-enabling higher channel density and simplified firmware without sacrificing precision or power efficiency.
Availability
ADS8330IBPW is available at Aetrix Electronics and suitable for industrial process control, medical instrumentation, magnetometer interfacing, and automated test equipment requiring stable component supply and long-term manufacturability.
Supply support for ADS8330IBPW 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 specializing in analog and embedded processing technologies, with leadership in precision data converters and industrial-grade ICs.
The ADS8330IBPW belongs to TI's low-power, high-speed SAR ADC family designed for precision measurement in space-constrained, thermally demanding industrial and medical systems.
FAQ
What is the maximum sampling rate of the ADS8330IBPW under industrial temperature conditions?
The ADS8330IBPW achieves 1 MSPS at +VA ≥ 3 V and 900 kSPS at +VA = 2.7 V, fully specified over –40°C to +85°C. These rates are guaranteed with internal CCLK and apply to both channels in auto-select mode. Conversion time remains fixed at 18 CCLK cycles regardless of supply voltage or temperature.
How does the programmable TAG bit function in the ADS8330IBPW?
The TAG bit in ADS8330IBPW appends a single-bit identifier (0 for +IN0, 1 for +IN1) to each 16-bit conversion result, producing an 17-bit serial word. This feature eliminates firmware overhead for channel tracking in daisy-chained or multi-device systems and is enabled via SDI command before conversion.
Can the ADS8330IBPW operate with a 2.5-V external reference while powered from a 3.3-V analog supply?
Yes - the ADS8330IBPW supports VREF from 0.3 V to +VA. With +VA = 3.3 V, a 2.5-V reference is valid and yields a 0–2.5 V unipolar input range. Full-scale performance (INL, SNR) is maintained per datasheet specifications at this configuration, provided VREF stability meets ±0.05% initial tolerance.
What is the purpose of the COM pin on the ADS8330IBPW, and how should it be connected?
The COM pin serves as the common inverting input for both +IN0 and +IN1 channels. In single-ended mode, it is tied to AGND. In pseudo-differential mode, it connects to a stable common-mode voltage (e.g., VREF/2) to enable rejection of shared noise between channels. It must never be left floating.
Does the ADS8330IBPW support daisy-chain operation, and what pins are required?
Yes - ADS8330IBPW supports daisy-chain mode using EOC/INT/CDI as chain data input and SDO as chain data output. Multiple devices share SCLK and FS/CS lines; each forwards its conversion result to the next device's CDI pin. No additional control logic or glue logic is required for synchronized multi-ADC readout.
ADS8330IBPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 2
- Input Type:
- 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:
- 5V
- Voltage - Supply, Digital:
- 1.65V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8330IBPW FAQ
1.How can I place an order for ADS8330IBPW through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8330IBPW 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 ADS8330IBPW reliable?
The price and inventory of ADS8330IBPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8330IBPW is usually 5 days.
3.What payment methods are accepted for ADS8330IBPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8330IBPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8330IBPW?
ADS8330IBPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8330IBPW 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 ADS8330IBPW?
For technical support, including ADS8330IBPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8330IBPW requirements.
6.How does Aetrix verify that ADS8330IBPW is sourced from the original manufacturer or authorized distributors?
All ADS8330IBPW 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 ADS8330IBPW meets industry standards.
7.What is the process for return or replacement of ADS8330IBPW?
All ADS8330IBPW units undergo pre-shipment inspection (PSI). If there is an issue with ADS8330IBPW, 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 ADS8330IBPW part is unused and in its original packaging.
Return procedure for ADS8330IBPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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