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Texas Instruments ADS8330IBPWG4
- Part No.:
- ADS8330IBPWG4
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADS8330IBPWG4.pdf
- Description:
- IC ADC 16BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,955
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Product details
Overview
ADS8330IBPWG4 from Texas Instruments is a 16-bit, 1-MSPS 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 ±1 LSB max DNL over –40°C to +85°C, and targets high-precision transducer and industrial sensor digitization.
For engineers reviewing the ADS8330IBPWG4 datasheet, ADS8330IBPWG4 pinout, ADS8330IBPWG4 application, or ADS8330IBPWG4 equivalent, this page provides verified electrical specifications, TSSOP-16 pin mapping, dual-input timing behavior, low-power daisy-chain operation support, and validated alternatives for medical instrumentation, magnetometer front-ends, and automated test equipment signal acquisition paths.
Technical Context
The ADS8330IBPWG4 implements a capacitor-based SAR architecture with inherent sample-and-hold, supporting both manual (CONVST-triggered) and auto-triggered conversion modes. Its dual single-ended inputs (+IN0/+IN1) share a common inverting input (COM), enabling flexible channel selection via software-controlled auto/manual mode.
It integrates a built-in 22.3–24.5 MHz conversion clock (CCLK), accepts external SCLK up to 50 MHz, and supports chain-mode daisy chaining via EOC/INT/CDI and CDI-to-SDO propagation. The device features three power-down states-Deep, Nap, and Auto-Nap-with deep power-down current as low as 4 nA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes-guarantees monotonicity and full-scale linearity for precision measurement systems. |
| Sampling Rate | 1 MSPS at +VA = 3–5.5 V; 900 kSPS at +VA = 2.7–3 V-enables real-time capture of fast sensor transients without undersampling. |
| INL / DNL | ±1.75 LSB max INL, ±1 LSB max DNL-ensures <0.003% full-scale error for calibrated industrial control loops. |
| Offset Error | ±0.5 mV max at 3 V supply-reduces calibration burden in low-voltage sensor interfaces like MEMS accelerometers. |
| SNR / SFDR | 93 dB SNR, 105 dB SFDR at 10 kHz-supports clean digitization of low-amplitude signals in noisy industrial environments. |
| Power Dissipation | 15.5 mW at 1 MSPS, +VA = 3 V, +VBD = 1.8 V-enables battery-powered portable instrumentation with extended runtime. |
| Input Range | 0 V to VREF (unipolar)-simplifies signal conditioning for grounded-referenced sensors such as RTDs and strain gauges. |
Pinout & Package
TSSOP-16 package (PW designation), 5.0 mm × 4.4 mm body, 0.65 mm pitch, exposed thermal pad internally connected to substrate (recommended to connect to AGND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+VA) | Analog supply input | Accepts 2.7–5.5 V; powers internal SAR core, reference buffer, and analog front-end-must be locally decoupled. |
| 2 (+IN1) | Second analog input | Noninverting input for channel 1; used with COM to form differential pair or as independent single-ended input. |
| 3 (+IN0) | First analog input | Primary noninverting input for channel 0; supports auto/manual channel sequencing in dual-input mode. |
| 4 (EOC/INT/CDI) | Status/data input/output | Configurable as end-of-conversion flag, interrupt, or daisy-chain data input-enables synchronized multi-ADC systems. |
| 5 (FS/CS) | Frame sync / chip select | Active-low SPI slave select; also serves as frame sync for TI C2000/C5000 DSP interfaces. |
| 6 (SDI) | Serial data input | Accepts configuration commands (e.g., channel select, TAG enable) and software reset-supports command-driven operation. |
| 7 (SDO) | Serial data output | Outputs 16-bit straight-binary result MSB-first; tri-state controlled by CS-enables bus sharing in multi-device designs. |
| 8 (BDGND) | Digital interface ground | Separate ground for +VBD-supplied I/O-prevents digital noise coupling into analog section when using split supplies. |
| 9 (CONVST) | Conversion start trigger | Edge-sensitive input that freezes sample-and-hold and initiates conversion-supports precise external timing control. |
| 10 (+VBD) | Digital I/O supply | 1.65–5.5 V logic supply; sets VIH/VIL thresholds and drives SDO-allows level-shifting between analog and host processor domains. |
| 11 (AGND) | Analog ground | Reference for analog inputs, REF+, REF−, and internal circuitry-must be star-connected to minimize ground bounce. |
| 12 (NC) | No connection | Internally unconnected pin-must remain floating or tied to AGND per layout guidelines. |
| 13 (REF+) | Positive reference input | Accepts external 0.3–5.5 V reference voltage; defines full-scale range-supports ratiometric or absolute measurement modes. |
| 14 (COM) | Common inverting input | Shared return for +IN0 and +IN1; typically tied to AGND-enables true differential or pseudo-differential input configurations. |
| 15 (REF−) | Negative reference input | Connects directly to AGND via dedicated via-minimizes reference path impedance and improves PSRR. |
| 16 (REF−) | Thermal pad (exposed) | Internally connected to substrate; recommended to solder to AGND plane for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable TAG bit output | Appends channel identifier (0/1) to each 16-bit conversion result-eliminates need for external multiplexer control logic in dual-sensor systems. |
| Auto/Manual channel select mode | Software-selectable input routing between +IN0 and +IN1-enables flexible firmware-driven sensor polling without hardware reconfiguration. |
| Multi-chip daisy chain capability | Uses EOC/INT/CDI and CDI-to-SDO propagation to cascade up to 16 devices on one SPI bus-reduces GPIO count and PCB routing complexity. |
| Built-in conversion clock (CCLK) | 22.3–24.5 MHz internal oscillator eliminates external crystal requirement-simplifies BOM and improves startup reliability. |
| Comprehensive power-down modes | Deep (4 nA), Nap (0.25 mA), and Auto-Nap (self-timed wake-up)-extends battery life in portable data loggers and wireless sensor nodes. |
Applications
| Industrial Process Control | Medical Instrumentation |
|---|---|
Use Scenario: High-accuracy monitoring of pressure, temperature, and flow sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Dual-channel ADC digitizing two 4–20 mA loop receivers simultaneously with 16-bit resolution and <1 µs inter-channel skew. Use Value: Enables single-chip replacement of two discrete 16-bit converters, reducing board area by 35% and eliminating inter-channel gain/offset mismatch. | Use Scenario: Digitizing low-noise EEG or ECG front-end signals in portable patient monitors. IC Role / Device Role / Timing Role: Precision SAR ADC capturing biopotential waveforms at 1 MSPS with 93 dB SNR and <10 ps aperture jitter. Use Value: Supports clinical-grade waveform fidelity without external sample-and-hold, simplifying analog front-end design and lowering system noise floor. |
| Magnetometer Interface | Automated Test Equipment |
Use Scenario: Reading fluxgate or AMR magnetometer outputs in navigation and geophysical surveying equipment. IC Role / Device Role / Timing Role: Unipolar ADC converting ±2.5 V differential magnetometer outputs referenced to stable 2.5 V external VREF. Use Value: Delivers 101 dB input channel isolation and ±0.5 mV offset error-preserves nanotesla-level resolution in Earth-field measurements. | Use Scenario: Capturing transient responses of DUTs during functional testing in benchtop ATE systems. IC Role / Device Role / Timing Role: High-speed ADC acquiring stimulus-response pairs with global CONVST synchronization across multiple channels. Use Value: Eliminates timing skew between channels via shared CONVST, enabling accurate phase and delay measurements within ±5 ns tolerance. |
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 |
|---|---|---|---|
| ADS8330IPW | Higher grade: ±2.5 LSB max INL, ±2 LSB max DNL, ±0.8 mV offset error-relaxed DC specs for cost-sensitive industrial use. | Targeted at non-critical sensing where calibration overhead is acceptable-unsuitable for medical or metrology-grade requirements. | Select ADS8330IPW only when full IB-grade linearity is not required and BOM cost reduction is prioritized. |
| ADS8329IBPW | Single-channel variant with identical IB-grade specs (±1.75 LSB INL, ±1 LSB DNL, ±0.5 mV offset) and same TSSOP-16 package. | Used where only one analog input is needed-requires external MUX for multi-sensor systems, increasing component count and timing complexity. | Choose ADS8329IBPW if dual-input functionality is unnecessary and PCB space allows for discrete MUX integration. |
Compared with ADS8330IPW and ADS8329IBPW, the ADS8330IBPWG4 uniquely combines dual-channel flexibility, IB-grade precision, and integrated TAG bit output-making it optimal for compact, calibration-sensitive, multi-sensor systems where channel identification and minimal external components are critical.
Availability
ADS8330IBPWG4 is available at Aetrix Electronics and suitable for industrial process control, medical instrumentation, magnetometer interface, and automated test equipment requiring stable component supply across long production lifecycles.
Supply support for ADS8330IBPWG4 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 signal chains.
The ADS8330IBPWG4 belongs to TI's low-power, high-speed SAR ADC family designed specifically for high-fidelity sensor digitization in resource-constrained industrial and medical systems-emphasizing accuracy, low power, and robust serial interfacing.
FAQ
What is the maximum sampling rate supported by the ADS8330IBPWG4 under 3-V supply conditions?
The ADS8330IBPWG4 supports a maximum sampling rate of 1 MSPS when the analog supply (+VA) is between 3 V and 5.5 V. At +VA = 2.7 V, the maximum rate drops to 900 kSPS due to internal timing constraints. This behavior is specified in the Electrical Characteristics table for TA = –40°C to +85°C and is guaranteed across the full industrial temperature range. The ADS8330IBPWG4 achieves this performance using its internal 22.3–24.5 MHz conversion clock (CCLK), which scales with supply voltage.
Does the ADS8330IBPWG4 require an external reference voltage, or can it operate with an internal reference?
The ADS8330IBPWG4 requires an external voltage reference applied between REF+ and REF− pins-it does not include an internal reference. The device accepts VREF from 0.3 V up to +VA, with typical values of 2.5 V (at +VA = 3 V) or 5 V (at +VA = 5 V). Reference input resistance is 40 kΩ, and REF− must be connected directly to AGND via a dedicated via to ensure optimal PSRR and offset stability. This external reference architecture enables ratiometric or absolute measurement configurations depending on system requirements.
How does the programmable TAG bit function in the ADS8330IBPWG4, and how is it enabled?
The TAG bit in the ADS8330IBPWG4 is a configurable 1-bit identifier appended to each 16-bit conversion result, indicating whether the sample originated from +IN0 (TAG = 0) or +IN1 (TAG = 1). It is enabled via the SDI serial interface by writing to the configuration register during initialization. When active, the SDO output shifts out 17 bits per frame (TAG + 16-bit result), allowing unambiguous channel attribution without external logic or timestamping-critical for time-synchronized dual-sensor applications like differential pressure or 3-axis magnetometer systems.
What are the power-down current levels for the ADS8330IBPWG4, and how are they entered?
The ADS8330IBPWG4 offers three power-down states: Deep (4–50 nA), Nap (0.25–0.4 mA), and Auto-Nap (self-waking after conversion). These are entered via SPI commands sent through SDI-no external pin control is required. Deep power-down halts all internal clocks and bias circuits, while Nap retains register state and wakes instantly on CONVST. Auto-Nap automatically enters low-power mode after conversion completion and wakes on next CONVST edge. All modes maintain full specification retention upon wake-up, with no recalibration needed.
Can the ADS8330IBPWG4 be operated in daisy-chain mode with other TI ADCs, and what pins are involved?
Yes, the ADS8330IBPWG4 supports daisy-chain operation with identical or compatible TI SAR ADCs (e.g., ADS8329, ADS8330 variants) using the EOC/INT/CDI and SDO pins. In chain mode, the CDI pin of the downstream device connects to the SDO pin of the upstream device, propagating conversion status and data. The master controller asserts CS to initiate simultaneous conversions, and EOC/INT/CDI acts as both status output and chain input. Propagation delay is specified at 16 ns (10-pF load), enabling reliable cascading of up to 16 devices on a single SPI bus without additional glue logic.
ADS8330IBPWG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
ADS8330IBPWG4 FAQ
1.How can I place an order for ADS8330IBPWG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8330IBPWG4 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 ADS8330IBPWG4 reliable?
The price and inventory of ADS8330IBPWG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8330IBPWG4 is usually 5 days.
3.What payment methods are accepted for ADS8330IBPWG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8330IBPWG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8330IBPWG4?
ADS8330IBPWG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8330IBPWG4 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 ADS8330IBPWG4?
For technical support, including ADS8330IBPWG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8330IBPWG4 requirements.
6.How does Aetrix verify that ADS8330IBPWG4 is sourced from the original manufacturer or authorized distributors?
All ADS8330IBPWG4 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 ADS8330IBPWG4 meets industry standards.
7.What is the process for return or replacement of ADS8330IBPWG4?
All ADS8330IBPWG4 units undergo pre-shipment inspection (PSI). If there is an issue with ADS8330IBPWG4, 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 ADS8330IBPWG4 part is unused and in its original packaging.
Return procedure for ADS8330IBPWG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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