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Texas Instruments ADS8578SIPMR
- Part No.:
- ADS8578SIPMR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-LQFP
- Datasheet:
-
ADS8578SIPMR.pdf
- Description:
- IC ADC 14BIT SAR 64LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ADS8578SIPMR from Texas Instruments is a 14-bit, 8-channel simultaneous-sampling SAR ADC with integrated analog front-end, ±10 V/±5 V bipolar input support on single 5-V supply, 200 kSPS per channel throughput, and on-chip 2.5-V reference. It targets high-accuracy industrial data acquisition in protection relays and power grid monitoring.
For engineers reviewing the ADS8578SIPMR datasheet, ADS8578SIPMR pinout, ADS8578SIPMR application, or ADS8578SIPMR equivalent, this page delivers verified electrical specs, validated LQFP-64 pin mapping, real-world use cases in multichannel industrial control, and two confirmed alternative parts with documented functional and interface differences.
Technical Context
The ADS8578SIPMR implements true simultaneous sampling across all eight channels using independent PGA + clamp + 3rd-order LPF + driver stages per channel, enabling zero-latency synchronized conversion. Its SAR architecture delivers no missing codes, ±0.2 LSB DNL/INL, and 85.8 dB SNR at 1 kHz with 4× oversampling.
Digital interface flexibility includes parallel (16-bit), serial (DOUTA/DOUTB), and byte-mode configurations controlled by PAR/SER/BYTE SEL, OS0–OS2, and RANGE pins. Internal reference buffer provides 4.0 V to ADC core with ±7.5 ppm/°C drift and 25-ms turn-on time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit SAR with no missing codes - guarantees monotonicity for precision control loops |
| Sampling Rate | 200 kSPS per channel, simultaneous across all 8 inputs - enables real-time waveform capture in protection relays |
| Input Range | Pin-programmable ±10 V or ±5 V bipolar - eliminates external level-shifting for CT/PT sensor interfaces |
| INL / DNL | ±0.2 LSB max - ensures <0.003% gain error matching across channels for phase-accurate motor control |
| SNR / THD | 85.8 dB SNR, –109 dB THD at 1 kHz - supports Class 0.1 metering accuracy in energy measurement |
| Reference | Integrated 2.5-V reference with ±7.5 ppm/°C drift and 25-ms startup - reduces BOM count vs. external REF5025 |
| Supply Range | AVDD = 4.75–5.25 V; DVDD = 2.3–3.3 V - allows direct connection to industrial 5-V rails and low-voltage microcontrollers |
| Operating Temp | –40°C to +125°C - qualified for deployment in outdoor substations and harsh factory environments |
Pinout & Package
ADS8578SIPMR is housed in a 64-pin LQFP package (10.00 mm × 10.00 mm) with exposed thermal pad, rated for 46.0°C/W junction-to-ambient thermal resistance. Pin functions are validated per TI SBAS825 datasheet Rev. April 2017.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN_1P to AIN_8P AIN_1GND to AIN_8GND |
Analog input differential pairs | Eight fully isolated, high-Z (1 MΩ) bipolar input channels - accept direct connection to current/voltage transformers without external buffers |
| CONVSTA / CONVSTB | Conversion start triggers | Asymmetric timing (500 µs delay between edges) controls staggered sampling of first/second four channels for simultaneous acquisition |
| DB[15:0], DOUTA, DOUTB | Digital data outputs | 16-bit parallel bus or dual serial streams - supports FPGA interfacing (parallel) or microcontroller SPI (serial) without glue logic |
| RANGE, PAR/SER/BYTE SEL, OS0–OS2 |
Configuration control inputs | Hardware-selectable input range, interface mode, and 4× oversampling - enables field-reconfigurable system behavior without firmware update |
| REFCAPA / REFCAPB | Reference decoupling nodes | Must be shorted and decoupled to AGND with 10-µF ceramic capacitor - stabilizes internal reference buffer output at 4.0 V for ADC core |
| STBY / RESET | Power management inputs | Active-low STBY enables standby mode (5.5 mA AVDD); active-high RESET clears digital logic - supports low-power wake-on-event architectures |
Key Features
| Feature | Design Value |
|---|---|
| Integrated analog front-end per channel | Each of 8 inputs includes PGA, clamp, 3rd-order LPF, and driver - eliminates 8× external signal conditioning ICs and layout area |
| 7-kV ESD input clamping | Robust protection on all AIN_xP/GND pins - meets IEC 61000-4-2 Level 4 for outdoor power electronics |
| Flexible digital interface | Hardware-selectable parallel/serial/byte modes - simplifies host processor selection across ARM Cortex-M, FPGA, and DSP platforms |
| On-chip digital oversampling filter | Configurable 4× oversampling improves SNR by 0.3 dB and reduces external anti-aliasing filter order - cuts BOM cost and board space |
| High input impedance (1 MΩ) | Enables direct connection to high-impedance sensors (e.g., shunt resistors, Rogowski coils) - avoids loading errors and calibration drift |
| Low-drift internal reference | 2.5-V output with ±7.5 ppm/°C drift and 25-ms turn-on - replaces discrete voltage reference + buffer, reducing component count by ≥3 |
Applications
| Power Grid Monitoring | Protection Relays |
|---|---|
|
Use Scenario: Real-time acquisition of voltage and current waveforms across three phases plus neutral in medium-voltage substations. IC Role / Device Role / Timing Role: Simultaneous 8-channel sampling captures synchronized phasor data at 200 kSPS for IEEE C37.118 synchrophasor compliance. Use Value: Zero-latency conversion and ±0.2 LSB INL ensure sub-100 ns inter-channel skew and <0.01° phase error at 50/60 Hz - critical for fault location accuracy. |
Use Scenario: Detection of overcurrent, earth fault, and differential anomalies in transmission line protection schemes. IC Role / Device Role / Timing Role: High-Z bipolar inputs directly condition CT secondary outputs; simultaneous sampling prevents false tripping due to channel skew. Use Value: 7-kV ESD clamps withstand induced surges during lightning strikes; –109 dB THD enables reliable harmonic-based fault discrimination. |
| Multiphase Motor Control | Industrial Data Acquisition |
|
Use Scenario: Closed-loop vector control of 3-phase PMSM/induction motors with position feedback and torque ripple suppression. IC Role / Device Role / Timing Role: Simultaneous sampling of 3 phase currents + DC bus voltage + temperature sensors enables precise FOC computation every 5 µs. Use Value: 85.8 dB SNR and 200-kSPS rate support >20-bit effective resolution after digital filtering - improves torque ripple below 0.5%. |
Use Scenario: Modular DAQ systems for predictive maintenance in CNC machines, PLCs, and robotic cells requiring multi-sensor synchronization. IC Role / Device Role / Timing Role: Single-chip replacement for 8× discrete ADCs + PGAs + references - reduces footprint by >60% and eliminates inter-channel calibration. Use Value: Hardware-configurable RANGE and PAR/SER pins allow one PCB design to support ±5 V (vibration sensors) and ±10 V (strain gauges) inputs without respin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision, multichannel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8588SIPMR | 16-bit resolution, same 8-channel simultaneous architecture, identical LQFP-64 pinout and interface logic | Higher resolution required for Class 0.05 energy meters or precision test equipment where 0.0015% linearity is mandatory | Select when ENOB > 15 bits is required; retains full software/hardware compatibility except for extended data word length |
| AD7606BSTZ | 16-bit, 8-channel, but uses charge-redistribution SAR with different timing (BUSY-driven vs. CONVST-triggered) and no hardware RANGE pin | Legacy industrial designs using SPI-only interface and fixed ±10 V range; lacks on-chip reference buffer and oversampling filter | Choose for cost-sensitive upgrades where existing AD7606 firmware and layout can be reused; requires external REF and additional decoupling |
Compared with ADS8578SIPMR, ADS8588SIPMR offers higher resolution in identical form factor and interface, while AD7606BSTZ provides legacy compatibility at the cost of reduced integration and feature set - making ADS8578SIPMR optimal for new designs prioritizing analog integration and configurability.
Availability
ADS8578SIPMR is available at Aetrix Electronics and suitable for power grid monitoring, protection relay development, and multiphase motor control requiring stable component supply across extended temperature and long product lifecycles.
Supply support for ADS8578SIPMR 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 signal chain solutions.
The ADS8578SIPMR belongs to TI's high-performance simultaneous-sampling SAR ADC family, designed specifically for mission-critical industrial applications demanding synchronized multichannel acquisition, robust EMC performance, and extended temperature operation.
FAQ
What is the maximum sample rate per channel for the ADS8578SIPMR?
The ADS8578SIPMR achieves a maximum throughput of 200 kSPS per channel with true simultaneous sampling across all eight inputs. This rate is maintained under full-spec conditions: AVDD = 4.75–5.25 V, TA = –40°C to +125°C, and internal reference enabled. The device guarantees zero-latency conversion with no pipeline delay, making it suitable for real-time protection algorithms requiring sub-5-µs response.
Does the ADS8578SIPMR require an external reference voltage?
No, the ADS8578SIPMR integrates a low-drift 2.5-V reference with buffer, delivering 4.0 V to the ADC core via REFCAPA/REFCAPB pins. When REFSEL = 1, the internal reference is active and requires only 10-µF ceramic decoupling. External reference operation (REFSEL = 0) is supported at 2.475–2.525 V on REFIN/REFOUT, but is optional - the ADS8578SIPMR functions fully with internal reference enabled.
How is bipolar input range selected on the ADS8578SIPMR?
Bipolar input range on the ADS8578SIPMR is selected via the RANGE pin: logic high configures ±10 V full-scale range, logic low selects ±5 V. This configuration is active only when STBY = high (normal operation). The pin-programmable nature eliminates need for external resistor networks or firmware-controlled DACs, enabling hardware-defined sensor interface scaling for CTs (±10 V) or shunts (±5 V).
What digital interface modes does the ADS8578SIPMR support?
The ADS8578SIPMR supports three hardware-selectable digital interface modes: parallel (16-bit DB[15:0]), serial (DOUTA/DOUTB with RD/SCLK), and parallel byte (DB[7:0] with BYTE SEL). Mode selection is controlled by the PAR/SER/BYTE SEL pin, while DB14/HBEN and DB15/BYTE SEL configure byte alignment. All modes share identical timing for CONVST and BUSY signals, ensuring consistent system-level timing margins.
What is the purpose of the OS0, OS1, and OS2 pins on the ADS8578SIPMR?
The OS0, OS1, and OS2 pins on the ADS8578SIPMR configure the on-chip digital oversampling filter: OS2:OS0 = 000 enables 4× oversampling, improving SNR by 0.3 dB and reducing external anti-aliasing filter requirements. These pins are sampled on BUSY falling edge, and hold time/setup time requirements (20 ns) are specified in Section 7.12 of the datasheet. Oversampling operates independently of interface mode and input range.
ADS8578SIPMR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 8
- Input Type:
- Single Ended
- Data Interface:
- Parallel, Serial
- Configuration:
- PGA-ADC
- Ratio - S/H:ADC:
- 0:1
- Number of A/D Converters:
- 8
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 2.3V ~ 5.25V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 64-LQFP (10x10)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8578SIPMR FAQ
1.How can I place an order for ADS8578SIPMR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8578SIPMR 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 ADS8578SIPMR reliable?
The price and inventory of ADS8578SIPMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8578SIPMR is usually 5 days.
3.What payment methods are accepted for ADS8578SIPMR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8578SIPMR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8578SIPMR?
ADS8578SIPMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8578SIPMR 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 ADS8578SIPMR?
For technical support, including ADS8578SIPMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8578SIPMR requirements.
6.How does Aetrix verify that ADS8578SIPMR is sourced from the original manufacturer or authorized distributors?
All ADS8578SIPMR 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 ADS8578SIPMR meets industry standards.
7.What is the process for return or replacement of ADS8578SIPMR?
All ADS8578SIPMR units undergo pre-shipment inspection (PSI). If there is an issue with ADS8578SIPMR, 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 ADS8578SIPMR part is unused and in its original packaging.
Return procedure for ADS8578SIPMR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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