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Texas Instruments ADS8578SIPM
- Part No.:
- ADS8578SIPM
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-LQFP
- Datasheet:
-
ADS8578SIPM.pdf
- Description:
- IC ADC 14BIT SAR 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,400
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Product details
Overview
ADS8578SIPM 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 ADS8578SIPM datasheet, ADS8578SIPM pinout, ADS8578SIPM application, or ADS8578SIPM equivalent, this page delivers verified specifications, validated pin functions, confirmed thermal and dynamic performance at –40°C to +125°C, and real-world interface timing for parallel/serial/byte modes - all aligned to SBAS825 production data.
Technical Context
The ADS8578SIPM implements eight independent, fully matched analog signal chains - each with 1-MΩ input impedance, overvoltage clamp (7-kV ESD), 3rd-order LPF, PGA, and ADC driver - enabling true simultaneous sampling across all channels without inter-channel crosstalk (–95 dB isolation). Its SAR architecture delivers zero-latency conversions with no pipeline delay.
Digital control includes three oversampling mode pins (OS0–OS2), dual conversion start inputs (CONVSTA/CONVSTB), and flexible interface selection via PAR/SER/BYTE SEL, supporting parallel (16-bit DB[15:0]), serial (DOUTA/DOUTB), and byte-mode readback - all synchronized by BUSY and FRSTDATA signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit SAR with no missing codes - guarantees monotonicity and deterministic full-scale accuracy. |
| Sampling Rate | 200 kSPS per channel, simultaneous across all 8 inputs - enables real-time waveform capture at 1 µs acquisition time. |
| Input Range | Pin-programmable ±10 V or ±5 V bipolar - supports direct connection to CT/PT sensors without external level-shifting. |
| INL / DNL | ±0.2 LSB integral and differential nonlinearity - ensures <0.003% end-point linearity error over temperature. |
| SNR / THD | 85.8 dB SNR (4× oversampling), –109 dB THD - meets Class 0.1 accuracy requirements for IEC 61850-9-2 compliant systems. |
| Reference | On-chip 2.5-V low-drift reference (7.5 ppm/°C) with buffered 4.0-V ADC reference voltage - eliminates external REF IC and reduces BOM count. |
| Operating Temp | –40°C to +125°C ambient - qualified for harsh environments including substation cabinets and motor drive enclosures. |
Pinout & Package
ADS8578SIPM is housed in a 64-pin LQFP package (10.00 mm × 10.00 mm), RoHS-compliant, with exposed thermal pad. Pin functions are validated per TI SBAS825 datasheet Figure 6 and Pin Functions table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN_1P to AIN_8P AIN_1GND to AIN_8GND |
Analog input differential pairs (8 channels) | True bipolar inputs accepting ±10 V or ±5 V; high 1-MΩ impedance enables direct sensor interfacing without buffer amplifiers. |
| CONVSTA / CONVSTB | Conversion start control inputs | Independent active-high triggers for first/second half of 8-channel set - enables staggered or synchronized sampling sequences. |
| DB[15:0], DOUTA, DOUTB | Digital data outputs | 16-bit parallel output (DB[15:0]) or dual serial streams (DOUTA/DOUTB) - supports FPGA, DSP, or microcontroller host interfaces with configurable timing. |
| PAR/SER/BYTE SEL RANGE OS0–OS2 |
Interface and function configuration inputs | Selects parallel/serial/byte mode; sets input range; configures 1×/2×/4× oversampling - all static logic-level controls, no I²C/SPI required. |
| BUSY / FRSTDATA | Status and synchronization outputs | BUSY indicates active conversion; FRSTDATA pulses high on valid Channel 1 data - enables deterministic DMA triggering and channel-aligned readout. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated analog front-end per channel | Each of 8 channels includes clamp, 3rd-order LPF, PGA, and driver - eliminates 8× external signal conditioning circuits and matching components. |
| Single-supply bipolar operation | Accepts ±10 V inputs using only 5-V AVDD - removes need for dual ±12-V supplies and associated regulators, reducing system cost and board area. |
| On-chip digital oversampling filter | Configurable 1×/2×/4× oversampling improves SNR by up to 1.3 dB and reduces external anti-aliasing filter complexity. |
| 7-kV ESD input protection | Robust clamping on all analog inputs - meets IEC 61000-4-2 Level 4 for field-deployed equipment without external TVS diodes. |
| Flexible digital interface | Hardware-selectable parallel (16-bit), serial (2-wire), or byte-mode (8-bit ×2) - simplifies integration with legacy 8-bit MCUs or high-speed FPGAs. |
Applications
| Power Grid Protection Relay | Multiphase Motor Control |
|---|---|
Use Scenario: Real-time voltage/current sampling across 3-phase lines plus neutral and residual ground paths for fault detection and trip decision logic. IC Role / Device Role / Timing Role: Simultaneous 8-channel acquisition captures synchronized waveforms with <1-µs inter-channel skew - essential for sequence-of-events recording and harmonic analysis. Use Value: Enables IEC 60255-24 Class T1 transient response compliance and eliminates external sample-hold circuitry, reducing latency to <5 µs end-to-end. |
Use Scenario: Closed-loop current and back-EMF sensing in servo drives with field-oriented control (FOC) requiring precise rotor position estimation. IC Role / Device Role / Timing Role: Simultaneous sampling of 6 motor phase currents (via shunts) plus DC bus voltage and temperature - maintains vector control loop integrity at >20 kHz PWM rates. Use Value: 200-kSPS/channel throughput supports 100-µs control cycle times; ±0.2 LSB INL ensures torque ripple <0.5% under full load. |
| Industrial Automation DAQ | Substation Condition Monitoring |
Use Scenario: Multi-sensor acquisition in PLC analog input modules measuring pressure, flow, temperature, and vibration across 8 discrete field points. IC Role / Device Role / Timing Role: Single ADS8578SIPM replaces 8 discrete 14-bit ADCs and associated PGAs - centralizes calibration, reduces component count, and ensures channel-to-channel gain/offset matching. Use Value: Gain error matching ≤15 LSB and offset matching ≤2.4 mV enable software-based channel calibration instead of per-channel trim pots. |
Use Scenario: Continuous monitoring of transformer winding temperature, oil dielectric strength, bushing partial discharge, and cooling pump status in HV substations. IC Role / Device Role / Timing Role: High-input-impedance (1 MΩ), ±10 V capable inputs directly interface with PT100 RTD signal conditioners and HV divider outputs - no external attenuation or buffering needed. Use Value: 125°C operating range and 6 ppm/°C gain drift ensure stable accuracy over seasonal ambient swings without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-accuracy, multi-channel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8588SIPM | 16-bit resolution, same 8-channel simultaneous architecture, identical pinout and interface - but higher 200-kSPS throughput with improved SNR (89 dB). | Required where Class 0.05 metering or high-fidelity oscilloscope-grade waveform capture is mandated. | Select ADS8588SIPM when 16-bit resolution and lower quantization noise are critical; ADS8578SIPM remains optimal for cost-sensitive 14-bit Class 0.1 systems. |
| AD7606C-16BSTZ | 16-bit, 8-channel, simultaneous SAR ADC from Analog Devices; uses 2.5-V external reference, requires external ±15-V supplies for ±10-V input range. | Suitable for lab-grade instrumentation where external supply rails are available; lacks integrated reference and overvoltage clamp. | Choose AD7606C-16BSTZ only if existing design already uses ±15-V rails and external reference infrastructure; ADS8578SIPM offers superior integration for new 5-V-only designs. |
Compared with ADS8578SIPM, ADS8588SIPM delivers 2 extra bits of resolution and 3.2-dB higher SNR at identical speed and packaging, while AD7606C-16BSTZ demands external supplies and reference but offers broader third-party ecosystem support for legacy toolchains.
Availability
ADS8578SIPM is available at Aetrix Electronics and suitable for power grid protection relays, multiphase motor control systems, and industrial automation DAQ modules requiring stable component supply across extended temperature and long product lifecycles.
Supply support for ADS8578SIPM 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 chain solutions.
The ADS8578SIPM belongs to TI's high-accuracy simultaneous-sampling ADC product line, designed specifically for demanding industrial applications requiring channel-coherent acquisition, wide input voltage ranges, and robust operation in electrically noisy, thermally extreme environments.
FAQ
What is the maximum sampling rate per channel for the ADS8578SIPM?
The ADS8578SIPM achieves a maximum throughput of 200 kSPS per channel with simultaneous sampling across all eight inputs. This rate is sustained with full 14-bit accuracy, 85.8-dB SNR (with 4× oversampling), and guaranteed timing margins per SBAS825 Section 7.6–7.11 - making it suitable for real-time protection relay algorithms and high-bandwidth motor control loops.
Does the ADS8578SIPM require external voltage references?
No, the ADS8578SIPM integrates a low-drift 2.5-V internal reference (7.5 ppm/°C) with dedicated REFCAPA/REFCAPB pins for decoupling. When REFSEL = 1, the device uses this internal reference; when REFSEL = 0, it accepts an external 2.475–2.525-V reference on REFIN/REFOUT. The internal option eliminates external reference ICs and associated passive components.
How does the ADS8578SIPM handle bipolar input ranges like ±10 V on a single 5-V supply?
The ADS8578SIPM uses an integrated charge-pump-based level-shifter within its analog front-end to generate internal negative bias rails, enabling true ±10 V or ±5 V differential input operation from a single 5-V AVDD supply. This architecture avoids external op-amp level shifters and maintains 1-MΩ input impedance and 7-kV ESD protection across the full input range.
What interface modes does the ADS8578SIPM support, and how are they selected?
The ADS8578SIPM supports parallel (16-bit DB[15:0]), serial (DOUTA/DOUTB with RD/SCLK), and byte-mode (two 8-bit transfers) interfaces. Selection is controlled by the PAR/SER/BYTE SEL pin (high = parallel, low = serial/byte), with BYTE SEL (DB15) and RD/SCLK behavior determining final mode - all configured via hardwired logic, not register writes.
Is the ADS8578SIPM pin-compatible with other devices in the ADS85xxS family?
Yes, the ADS8578SIPM shares identical 64-pin LQFP packaging, pinout, and interface signaling with ADS8588SIPM, ADS8586SIPM, and ADS8584SIPM. This allows drop-in resolution upgrades (e.g., 14-bit → 16-bit) without PCB redesign - though firmware must accommodate increased data width and updated timing parameters per respective datasheets.
ADS8578SIPM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tray
- 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:
- -
ADS8578SIPM FAQ
1.How can I place an order for ADS8578SIPM through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8578SIPM 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 ADS8578SIPM reliable?
The price and inventory of ADS8578SIPM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8578SIPM is usually 5 days.
3.What payment methods are accepted for ADS8578SIPM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8578SIPM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8578SIPM?
ADS8578SIPM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8578SIPM 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 ADS8578SIPM?
For technical support, including ADS8578SIPM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8578SIPM requirements.
6.How does Aetrix verify that ADS8578SIPM is sourced from the original manufacturer or authorized distributors?
All ADS8578SIPM 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 ADS8578SIPM meets industry standards.
7.What is the process for return or replacement of ADS8578SIPM?
All ADS8578SIPM units undergo pre-shipment inspection (PSI). If there is an issue with ADS8578SIPM, 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 ADS8578SIPM part is unused and in its original packaging.
Return procedure for ADS8578SIPM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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