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Texas Instruments ADS8365IPAG
- Part No.:
- ADS8365IPAG
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-TQFP
- Datasheet:
-
ADS8365IPAG.pdf
- Description:
- IC ADC 16BIT SAR 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,356
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Product details
Overview
ADS8365IPAG from Texas Instruments is a 16-bit, 250kSPS, six-channel simultaneous-sampling SAR analog-to-digital converter with fully differential inputs, internal 2.5V reference, and parallel interface in TQFP-64 package. It delivers 4µs per-channel throughput, 80dB CMRR at 50kHz, and operates across –40°C to +85°C for motor control and multi-axis positioning systems.
For engineers reviewing the ADS8365IPAG datasheet, ADS8365IPAG pinout, ADS8365IPAG application, or ADS8365IPAG equivalent, key selection considerations include simultaneous sampling capability across three channel pairs (A/B/C), 16-bit resolution with ±4 LSB INL, low-power Nap mode (5mW), and support for both 3V and 5V digital I/O supplies.
Technical Context
The ADS8365IPAG integrates six independent SAR ADC cores, each paired with a differential sample-and-hold amplifier, enabling true simultaneous acquisition across all six channels. Its architecture maintains full differential signaling from input to ADC core, delivering 80dB common-mode rejection at 50kHz and 95dB channel-to-channel isolation.
It supports three operational modes-direct address, cycle, and FIFO-with flexible digital interface timing (tCONV = 3.2µs, tACQ = 800ns) and dual-supply operation: AVDD = 4.75–5.25V for analog circuitry and BVDD = 2.7–5.5V for digital I/O, allowing interoperability with mixed-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees monotonic output and ≥14-bit no-missing-codes performance over temperature. |
| Sampling Rate | 250kSPS total - enables simultaneous conversion of all six channels at 41.7kSPS per channel with deterministic latency. |
| INL Error | ±4 LSB max - ensures <0.06% full-scale linearity error for precision closed-loop control feedback. |
| CMRR | 80 dB at 50 kHz - rejects common-mode noise in noisy industrial motor drive environments. |
| Power Dissipation | 200 mW normal / 5 mW Nap / 50 µW power-down - supports thermal-constrained embedded designs with dynamic power scaling. |
| Reference | Internal 2.5 V ±1% - eliminates external reference component count while maintaining 20 ppm/°C drift and 8 µVrms noise. |
| Channel Isolation | 95 dB - prevents crosstalk between phase currents in 3-phase power measurement applications. |
Pinout & Package
TQFP-64 (PAG) package with 0.5 mm pitch, exposed thermal pad, and RoHS-compliant finish. Pin 1 marked by dot; recommended PCB layout includes separate AGND/BGND planes and decoupling capacitors on AVDD (100nF + 10µF) and BVDD (100nF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH A0+ / CH A0– | Analog Input Pair A0 | Differential input for first channel of pair A; requires matched trace routing to preserve CMRR. |
| HOLDA / HOLDB / HOLDC | Sample-Hold Control Inputs | Independent active-low hold signals per channel pair-enables synchronized sampling across subsets of channels. |
| REFOUT / REFIN | Reference Output/Input | REFOUT provides buffered 2.5V reference; REFIN accepts 1.5–2.6V external reference or connects directly to REFOUT. |
| D15–D0 | Parallel Data Bus | 16-bit bidirectional data bus; BYTE pin selects 16-bit or two 8-bit transfers-reduces FPGA I/O resource usage. |
| CS / RD / WR / CLK | Digital Interface Controls | Standard parallel interface timing compatible with microcontrollers and FPGAs; supports 5MHz max clock frequency. |
| AVDD / AGND / BVDD / BGND | Power Supplies | Split analog/digital supply domains isolate noise; AGND and BGND must be connected at single point near device. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous Sampling | Six independent ADCs acquire all channels at identical instants-preserves phase relationships for vector control algorithms. |
| Pairwise Channel Matching | Offset error match ≤1 mV and gain error match ≤0.05% FSR between A0/A1, B0/B1, C0/C1-enables accurate differential measurements. |
| Nap Mode Power Reduction | Reduces power from 200 mW to 5 mW while retaining register state and reference-ideal for intermittent acquisition duty cycles. |
| Flexible Reference Architecture | Internal 2.5V reference or external 1.5–2.6V source; REFIN input impedance >100 MΩ minimizes loading on precision external references. |
| High Immunity Interface | CMOS/LVCMOS-compatible digital I/O with VIH/VIL thresholds scaled to BVDD-ensures robust operation across 2.7–5.5V logic families. |
Applications
| Motor Control | Multi-Axis Positioning Systems |
|---|---|
Use Scenario: Real-time current sensing in three-phase BLDC or PMSM inverters using shunt resistors on all phases. IC Role / Device Role / Timing Role: Simultaneous sampling of six differential current/voltage inputs preserves phase alignment for field-oriented control (FOC) computation. Use Value: 95 dB channel isolation and 80 dB CMRR suppress PWM switching noise, improving torque ripple <1%. |
Use Scenario: Coordinated position feedback from six servo axes (X/Y/Z + rotation/pitch/yaw) in CNC or robotic arms. IC Role / Device Role / Timing Role: Six-channel synchronous acquisition captures spatially correlated motion data without time skew artifacts. Use Value: Aperture jitter ≤50 ps and matching ≤100 ps ensure sub-micron positional accuracy in high-speed motion profiles. |
| 3-Phase Power Monitoring | Industrial Data Acquisition |
Use Scenario: Simultaneous voltage and current measurement on all three phases plus neutral for energy metering and PQ analysis. IC Role / Device Role / Timing Role: HOLDA/HOLDB/HOLDC enable group-triggered sampling of voltage/current pairs per phase with deterministic timing. Use Value: ±4 LSB INL and 87 dB SINAD at 10 kHz support Class 0.2 metering accuracy per IEC 62053-22. |
Use Scenario: High-fidelity sensor array readout in vibration monitoring, structural health, or acoustic emission systems. IC Role / Device Role / Timing Role: Internal 2.5V reference and low 60 µVrms noise enable DC-coupled, low-drift measurements without external calibration. Use Value: 14.3 ENOB and 95 dB SFDR allow detection of sub-millivolt fault signatures buried in broadband noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar simultaneous-sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8364IPAG | 16-bit, 250kSPS, 6-channel, but lacks internal reference and Nap mode; requires external 2.5V reference. | Higher system BOM cost and board area due to external reference; less suitable for space-constrained designs. | Select when external reference already exists and power cycling is not required. |
| AD7656ASTZ | 16-bit, 250kSPS, 6-channel, with internal reference and sequencer, but uses serial SPI interface instead of parallel. | Lower pin count but higher software overhead; incompatible with legacy parallel-FPGA interfaces. | Select for new designs prioritizing PCB density over interface simplicity and deterministic read latency. |
Compared with ADS8364IPAG and AD7656ASTZ, the ADS8365IPAG uniquely combines internal reference, Nap mode, and parallel interface in a single TQFP-64 package-reducing design complexity for real-time motor control where low-latency deterministic access and minimal external components are critical.
Availability
ADS8365IPAG is available at Aetrix Electronics and suitable for motor control, multi-axis positioning systems, and 3-phase power control requiring stable component supply, long-term industrial lifecycle support, and guaranteed traceable sourcing.
Supply support for ADS8365IPAG 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, embedded processing, and high-performance signal chain solutions.
The ADS8365 belongs to TI's precision high-speed SAR ADC product line, engineered for industrial automation applications demanding simultaneous multi-channel acquisition, low power, and robust noise immunity in harsh electrical environments.
FAQ
What is the maximum clock frequency supported by the ADS8365IPAG?
The ADS8365IPAG supports a maximum clock frequency of 5 MHz, enabling its full 250kSPS throughput capability. At this rate, conversion time per ADC is 3.2 µs and acquisition time is 800 ns. Operation below 50 kHz is also specified, providing flexibility for lower-speed, ultra-low-power applications where clock gating is used.
Does the ADS8365IPAG require an external reference voltage?
No-the ADS8365IPAG includes an internal 2.5 V reference with ±1% initial accuracy and ±20 ppm/°C drift. The REFOUT pin (61) can be directly connected to REFIN (62) for self-referenced operation. An external reference between 1.5 V and 2.6 V may be used via REFIN if higher precision or different full-scale range is needed.
How does the Nap mode function in the ADS8365IPAG?
Nap mode reduces ADS8365IPAG power dissipation from 200 mW to 5 mW while preserving register contents and reference stability. It is activated by driving the NAP pin (20) high. This mode retains configuration and reference output, enabling rapid wake-up (<100 µs settling) without reinitialization-ideal for burst-mode data acquisition.
What is the purpose of the HOLDA, HOLDB, and HOLDC pins on the ADS8365IPAG?
HOLDA, HOLDB, and HOLDC are independent active-low sample-hold control inputs for channel pairs A (A0/A1), B (B0/B1), and C (C0/C1). Asserting any combination enables simultaneous sampling across selected pairs-e.g., asserting HOLDA + HOLDB acquires four channels synchronously-critical for phase-aligned measurements in motor drives and power converters.
Can the ADS8365IPAG interface with both 3V and 5V logic systems?
Yes-the ADS8365IPAG supports dual digital I/O supply: BVDD accepts 2.7 V to 5.5 V, and its digital inputs/outputs are LVCMOS- or CMOS-compatible depending on BVDD level. At BVDD = 3 V, VOH ≥ BVDD – 0.2 V and VOL ≤ 0.2 V; at BVDD = 5 V, VOH ≥ 4.44 V and VOL ≤ 0.5 V-ensuring interoperability with mixed-voltage FPGA or MCU platforms.
ADS8365IPAG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-TQFP
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 6
- Input Type:
- Differential
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 6
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- Selectable Address, Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-TQFP (10x10)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8365IPAG FAQ
1.How can I place an order for ADS8365IPAG through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8365IPAG 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 ADS8365IPAG reliable?
The price and inventory of ADS8365IPAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8365IPAG is usually 5 days.
3.What payment methods are accepted for ADS8365IPAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8365IPAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8365IPAG?
ADS8365IPAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8365IPAG 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 ADS8365IPAG?
For technical support, including ADS8365IPAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8365IPAG requirements.
6.How does Aetrix verify that ADS8365IPAG is sourced from the original manufacturer or authorized distributors?
All ADS8365IPAG 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 ADS8365IPAG meets industry standards.
7.What is the process for return or replacement of ADS8365IPAG?
All ADS8365IPAG units undergo pre-shipment inspection (PSI). If there is an issue with ADS8365IPAG, 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 ADS8365IPAG part is unused and in its original packaging.
Return procedure for ADS8365IPAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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