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Texas Instruments ADS8864IDRCT
- Part No.:
- ADS8864IDRCT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
ADS8864IDRCT.pdf
- Description:
- IC ADC 16BIT SAR 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:245
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Product details
Overview
ADS8864IDRCT from Texas Instruments is a 16-bit, 400-kSPS, single-ended input SAR analog-to-digital converter with SPI-compatible serial interface, 93 dB SNR, ±2.0 LSB max INL, and micropower operation (2.6 mW at full speed). It accepts 2.5 V to 5 V external reference independent of AVDD and targets precision data acquisition in space- and power-constrained systems.
For engineers reviewing the ADS8864IDRCT datasheet, ADS8864IDRCT pinout, ADS8864IDRCT application, or ADS8864IDRCT equivalent, key selection considerations include unipolar single-ended input range (0 V to VREF), daisy-chain capability for multi-channel systems, no-latency output architecture, and ultra-low 50 nA power-down current - all in a 3.0 mm × 3.0 mm VSON-10 package.
Technical Context
The ADS8864IDRCT implements a successive approximation register (SAR) ADC core with fully differential sampling switch and capacitor DAC array, enabling 16-bit NMC performance without pipeline latency. Its reference input is decoupled from AVDD, allowing VREF up to 5 V while AVDD operates as low as 2.7 V.
It supports three serial interface modes - 3-wire (CONVST-as-CS), 4-wire (DIN-as-CS), and daisy-chain - all synchronized to SCLK up to 66.6 MHz. A busy-indicator bit option simplifies host synchronization, and full-scale step settling occurs in 1200 ns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes (NMC) - guarantees monotonic transfer function for precision control loops. |
| Sample rate | 400 kSPS maximum - supports high-fidelity waveform capture up to ~100 kHz Nyquist bandwidth. |
| SNR / THD | 93 dB SNR, –108 dB THD at 1 kHz - enables >15.2 ENOB for low-noise sensor interfacing. |
| INL / DNL | ±2.0 LSB max INL, ±1.0 LSB max DNL - ensures accurate absolute measurement across full scale. |
| Power dissipation | 2.6 mW at 400 kSPS; 65 µW at 10 kSPS - scales linearly with throughput for battery-operated optimization. |
| Reference range | 2.5 V to 5 V, independent of AVDD - eliminates need for signal scaling when using common 3.3 V or 5 V references. |
| Supply ranges | AVDD: 2.7–3.6 V; DVDD: 1.65–3.6 V - supports mixed-voltage digital hosts (e.g., 1.8 V or 3.3 V microcontrollers). |
Pinout & Package
The ADS8864IDRCT is packaged in a 3.0 mm × 3.0 mm, 10-pin VSON (DRC) package with exposed thermal pad. This RoHS-compliant, leadless package supports fine-pitch PCB assembly and enhanced thermal performance (RθJB = 45.9°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF | Analog reference input | Accepts 2.5–5 V external reference; decoupling ≥10 µF required for noise immunity and stability. |
| AINP | Analog input (+) | Single-ended analog input node; operates over –0.1 V to VREF + 0.1 V range. |
| AINN | Analog input (–) | Ground-referenced return path for single-ended mode; internally tied to GND in default configuration. |
| AVDD | Analog supply | 2.7–3.6 V analog rail; requires 1-µF local decoupling to GND for ADC core stability. |
| DVDD | Digital supply | 1.65–3.6 V I/O supply; independent of AVDD, enabling low-voltage MCU interfacing. |
| GND | Common ground | Shared analog/digital reference plane; internal connection to REF return and thermal pad. |
| CONVST | Convert start / CS | Edge-triggered conversion initiator; doubles as chip select in 3-wire mode. |
| DIN | Serial data input | Configures interface mode at conversion start; serves as CS in 4-wire mode. |
| DOUT | Serial data output | MSB-first, SCLK-synchronized output; tri-state controlled by CONVST or DIN per mode. |
| SCLK | Serial clock input | Up to 66.6 MHz clock; controls data timing in all interface modes including daisy-chain. |
Key Features
| Feature | Design Value |
|---|---|
| No-latency output | Delivers conversion result immediately after completion - eliminates pipeline delay for real-time closed-loop control. |
| Daisy-chain support | Enables cascaded readout of multiple ADS8864IDRCT devices using single SCLK/DOUT line - reduces GPIO count in multi-channel systems. |
| Independent reference supply | VREF operates up to 5 V regardless of AVDD (min 2.7 V) - allows use of precision 5 V references without analog rail upgrade. |
| Ultra-low power-down current | 50 nA AVDD current in power-down state - extends battery life in intermittent-sampling applications like portable diagnostics. |
| Full-scale step settling | 1200 ns to 16-bit accuracy - ensures valid data within one SCLK cycle at 66.6 MHz, supporting tight timing budgets. |
Applications
| Automatic Test Equipment (ATE) | Instrumentation & Process Control |
|---|---|
Use Scenario: High-accuracy voltage measurement in modular ATE channel cards requiring synchronized multi-device sampling. IC Role / Device Role / Timing Role: Precision 16-bit digitizer with daisy-chain capability and no-latency output for deterministic trigger-response timing. Use Value: Enables 400 kSPS per channel with <1.2 µs settling, supporting fast calibration routines and waveform fidelity up to 100 kHz. |
Use Scenario: Analog sensor monitoring in industrial PLC analog input modules with strict EMC and long-term stability requirements. IC Role / Device Role / Timing Role: Low-drift, low-power ADC front-end with 2.5–5 V reference flexibility and robust 93 dB SNR. Use Value: Delivers ±2 LSB INL and <10 ppm/°C gain drift, reducing recalibration frequency in temperature-varying environments. |
| Precision Medical Equipment | Low-Power Battery-Operated Instruments |
Use Scenario: ECG/EEG signal digitization in portable diagnostic devices where DC accuracy and low noise are critical. IC Role / Device Role / Timing Role: Single-ended SAR ADC with 93 dB SNR and 50 nA power-down current for standby efficiency. Use Value: Achieves >15 ENOB at 1 kHz with <1 µV/°C offset drift, meeting IEC 60601-2-27 low-noise requirements. |
Use Scenario: Handheld multimeter or environmental sensor node operating from coin-cell or Li-ion battery for years. IC Role / Device Role / Timing Role: Micropower ADC with throughput-scalable power (65 µW @ 10 kSPS) and integrated reference decoupling. Use Value: Reduces average system power by >75% vs fixed-rate converters, extending operational life without sacrificing 16-bit resolution. |
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 |
|---|---|---|---|
| ADS8862IDRCT | 680 kSPS throughput, same 16-bit resolution and VSON-10 package; higher power (3.8 mW @ 680 kSPS) and narrower reference range (2.5–4.5 V). | Better suited for higher-bandwidth applications like motor phase current sensing where >400 kSPS is required. | Select ADS8862IDRCT only if sample rate >400 kSPS is mandatory; ADS8864IDRCT offers superior power efficiency below 400 kSPS. |
| ADS8866IDRCT | Differential input architecture (vs. single-ended); identical 400 kSPS, 16-bit, and power specs; requires matched input pair and external driver. | Preferred for noisy industrial environments where common-mode rejection (90 dB CMRR) improves signal integrity. | Choose ADS8866IDRCT when measuring floating or differential sensors; ADS8864IDRCT simplifies design for ground-referenced signals. |
Compared with ADS8862IDRCT and ADS8866IDRCT, the ADS8864IDRCT uniquely balances single-ended simplicity, ultra-low idle power, and flexible 2.5–5 V reference support - making it optimal for cost-sensitive, space-constrained, and battery-limited precision measurement systems.
Availability
ADS8864IDRCT is available at Aetrix Electronics and suitable for automatic test equipment, instrumentation and process controls, and precision medical equipment requiring stable component supply and long-term manufacturability.
Supply support for ADS8864IDRCT 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 low-power design.
The ADS8864IDRCT belongs to TI's precision SAR ADC portfolio, engineered for high-resolution, low-latency, and micropower data acquisition in portable, industrial, and medical instrumentation.
FAQ
What is the maximum SCLK frequency supported by the ADS8864IDRCT?
The ADS8864IDRCT supports SCLK frequencies up to 66.6 MHz in all interface modes (3-wire, 4-wire, and daisy-chain). This allows full 16-bit readout in under 250 ns, enabling tight timing integration with high-speed microcontrollers and FPGAs. The ADS8864IDRCT datasheet specifies tSCLK minimum of 15 ns, confirming reliable operation at this rate across temperature and voltage ranges.
Does the ADS8864IDRCT require an external reference voltage?
Yes, the ADS8864IDRCT requires an external reference voltage applied to the REF pin, with a valid range of 2.5 V to 5 V. The device does not include an internal reference; instead, it leverages external precision references for optimal flexibility and accuracy. The ADS8864IDRCT reference input must be decoupled with ≥10 µF capacitance to ensure stable conversion performance and low noise.
Can the ADS8864IDRCT operate with different analog and digital supply voltages?
Yes, the ADS8864IDRCT supports independent analog (AVDD: 2.7–3.6 V) and digital (DVDD: 1.65–3.6 V) supplies. This allows interfacing with 1.8 V or 3.3 V microcontrollers while maintaining optimal analog performance. The ADS8864IDRCT specification confirms full functionality across this dual-supply range without level-shifting circuitry.
What is the power consumption of the ADS8864IDRCT at 100 kSPS?
At 100 kSPS, the ADS8864IDRCT consumes 0.65 mW typical power (AVDD = 3 V). This reflects its scalable micropower architecture, where dissipation decreases linearly with throughput. The ADS8864IDRCT datasheet specifies this value under standard conditions (VREF = 5 V, TA = 25°C), and actual consumption remains stable across the full –40°C to +85°C operating range.
Is the ADS8864IDRCT pin-compatible with other devices in the ADS88xx family?
The ADS8864IDRCT shares the same 10-pin VSON (DRC) footprint with ADS8862IDRCT and ADS8866IDRCT, but pin functions differ - notably AINN is used for differential input in ADS8866IDRCT and unused (tied to GND) in ADS8864IDRCT. Therefore, ADS8864IDRCT is not pin-compatible with those variants despite identical packaging; board redesign is required for substitution.
ADS8864IDRCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 400k
- 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
- Voltage - Supply, Digital:
- 1.65V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-VSON (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8864IDRCT FAQ
1.How can I place an order for ADS8864IDRCT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8864IDRCT 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 ADS8864IDRCT reliable?
The price and inventory of ADS8864IDRCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8864IDRCT is usually 5 days.
3.What payment methods are accepted for ADS8864IDRCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8864IDRCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8864IDRCT?
ADS8864IDRCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8864IDRCT 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 ADS8864IDRCT?
For technical support, including ADS8864IDRCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8864IDRCT requirements.
6.How does Aetrix verify that ADS8864IDRCT is sourced from the original manufacturer or authorized distributors?
All ADS8864IDRCT 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 ADS8864IDRCT meets industry standards.
7.What is the process for return or replacement of ADS8864IDRCT?
All ADS8864IDRCT units undergo pre-shipment inspection (PSI). If there is an issue with ADS8864IDRCT, 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 ADS8864IDRCT part is unused and in its original packaging.
Return procedure for ADS8864IDRCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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