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Texas Instruments ADS8507IDWG4
- Part No.:
- ADS8507IDWG4
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADS8507IDWG4.pdf
- Description:
- IC ADC 16BIT SAR 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,939
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Product details
Overview
ADS8507IDWG4 from Texas Instruments is a 16-bit, 40-kSPS successive approximation register (SAR) analog-to-digital converter with integrated 2.5-V reference, parallel/serial dual interface, ±10 V input range capability, and industrial -40°C to +85°C operation. It serves as a precision data acquisition front-end in systems requiring high DC accuracy and low power.
For engineers reviewing the ADS8507IDWG4 datasheet, ADS8507IDWG4 pinout, ADS8507IDWG4 application, or ADS8507IDWG4 equivalent, key selection criteria include its ±1.5 LSB INL, 89.9-dB SINAD at 10 kHz, 24-mW typical power at full rate, SO-28 package compatibility, and support for both binary 2's complement and straight binary output coding.
Technical Context
The ADS8507IDWG4 implements a capacitor-based SAR architecture with internal sample-and-hold, clock generation, and reference buffer. Its dual-mode interface supports either full 16-bit parallel output (via BYTE-selectable 8-bit nibbles) or SPI-compatible serial output with daisy-chain (TAG) capability.
It features configurable input ranges (±10 V, 0–5 V, 0–4 V), selectable output coding (SB/BTC), internal/external reference selection (EXT/INT), and power-down mode (50 µW). The device uses two analog inputs (R1IN/R2IN), supports overvoltage tolerance to ±25 V, and maintains specified performance across its full industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 1 part in 65,536 quantization granularity for high-fidelity signal digitization |
| Sampling Rate | 40 kSPS - enables real-time capture of signals up to ~130 kHz usable bandwidth (60 dB SINAD) |
| INL | ±1.5 LSB max - ensures monotonicity and <0.005% full-scale linearity error in ±10 V range |
| SINAD | 89.9 dB at 10 kHz - corresponds to ~14.9 effective bits for dynamic signal fidelity |
| Power Dissipation | 24 mW typ at 40 kSPS - enables low-thermal-load integration in space-constrained industrial modules |
| Reference | Internal 2.5 V ±0.4% (2.48–2.52 V) - eliminates external reference component while supporting external 2.3–2.7 V options |
| Operating Temp | -40°C to +85°C - qualified for deployment in uncontrolled industrial environments without derating |
Pinout & Package
ADS8507IDWG4 is housed in a 28-pin SOIC (SO-28, DW package), with 14 pins per side, gull-wing leads, and standard JEDEC MS-013AC footprint (17.9 mm × 7.5 mm, 1.27 mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| R1IN / R2IN | Differential analog input pair | Accepts ±10 V, 0–5 V, or 0–4 V ranges; withstands ±25 V fault without damage |
| REF / CAP | Reference buffer output & decoupling node | Requires 2.2-µF tantalum capacitor to AGND2; stabilizes internal 2.5-V reference |
| SB/BTC | Data format select | Low = binary 2's complement (bipolar); high = straight binary (unipolar) |
| BYTE | Parallel data byte select | Low = D7–D0 output MSB byte; high = D7–D0 output LSB byte |
| R/C | Read/Convert control | Falling edge initiates conversion and (if EXT/INT = low) triggers serial data transmission |
| BUSY | Conversion status indicator | Active-low open-drain output; goes high when conversion and output update complete |
| PWRD / REFD | Power-down & reference disable | PWRD high disables conversions; REFD high shuts down internal reference |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2.5-V reference | Eliminates external reference IC and associated layout complexity; drift ≤8 ppm/°C |
| Dual parallel/serial interface | Enables flexible system integration-parallel for speed, serial for pin count reduction and daisy-chaining |
| Configurable input ranges | Hardware-selectable ±10 V, 0–5 V, or 0–4 V via external resistor networks (Table 1) |
| Overvoltage tolerant inputs | Withstands ±25 V on R1IN/R2IN without latch-up or parametric shift-critical for industrial transients |
| Low-power power-down mode | Reduces supply current to ≤50 µW-enables rapid wake-up (<1 ms recovery) for duty-cycled DAQ systems |
Applications
| Industrial Process Control | Test & Measurement Equipment |
|---|---|
Use Scenario: High-accuracy voltage monitoring of PLC analog I/O modules under varying ambient temperatures. IC Role / Device Role / Timing Role: Primary ADC front-end digitizing ±10 V sensor outputs with <±1.5 LSB INL and 89.9-dB SINAD. Use Value: Enables direct replacement of legacy 14-bit converters without recalibration; supports software trimming via unipolar zero error ≤±3 mV. | Use Scenario: Digitizing calibrated reference waveforms in automated benchtop test instruments. IC Role / Device Role / Timing Role: Precision sampling engine synchronized to internal clock with 20-ns aperture jitter. Use Value: Delivers 89.9-dB SINAD at 10 kHz-meets Class A DMM and waveform analyzer AC performance requirements. |
| Medical Data Acquisition | Digital Signal Processing Front-End |
Use Scenario: Capturing low-amplitude bio-potential signals (e.g., ECG, EEG) with minimal added noise. IC Role / Device Role / Timing Role: Low-noise, low-power ADC interfaced to instrumentation amplifier output. Use Value: 24-mW typical dissipation at 40 kSPS reduces thermal drift; 83–89.9 dB SNR ensures clean signal capture. | Use Scenario: Feeding time-domain samples to FPGA-based FIR filters or FFT engines in real-time analyzers. IC Role / Device Role / Timing Role: High-throughput, deterministic-latency ADC with parallel bus handshake (BUSY-driven latching). Use Value: 20-µs conversion time + BUSY strobe enables cycle-accurate data capture; 16-bit resolution preserves dynamic range for DSP algorithms. |
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 |
|---|---|---|---|
| ADS8505IDW | 16-bit, 250-kSPS, no internal reference, requires external 2.5-V ref; SO-28 pinout identical | Higher throughput but lacks integrated reference-increases BOM count and layout area | Select when >40 kSPS is required and external reference infrastructure already exists |
| ADS8326IBDW | 16-bit, 500-kSPS, internal reference, but only serial interface (no parallel bus); SO-16 package | Smaller footprint and higher speed, but incompatible pinout and missing parallel interface | Select for space-constrained, high-speed serial-only systems where parallel bus is unnecessary |
Compared with ADS8505IDW and ADS8326IBDW, the ADS8507IDWG4 uniquely balances integrated reference, dual-interface flexibility, and industrial-grade DC accuracy in a proven SO-28 package-making it optimal for retrofitting legacy 12/14-bit systems without board redesign.
Availability
ADS8507IDWG4 is available at Aetrix Electronics and suitable for industrial process control, medical data acquisition, and test equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for ADS8507IDWG4 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-reliability components for industrial, automotive, and communications markets.
The ADS8507IDWG4 belongs to TI's precision data acquisition portfolio, designed specifically for high-accuracy, low-power, single-supply industrial measurement systems operating across extended temperature ranges.
FAQ
What is the maximum input voltage the ADS8507IDWG4 can tolerate without damage?
The ADS8507IDWG4 analog inputs (R1IN and R2IN) tolerate voltages up to ±25 V continuously without damage, even outside the specified ±10 V, 0–5 V, or 0–4 V operating ranges. This overvoltage robustness protects against field transients in industrial environments and simplifies front-end protection design. The device remains functional after such events provided absolute maximum ratings (e.g., ±25 V on R1IN/R2IN, 6 V on VANA) are not exceeded.
Does the ADS8507IDWG4 require an external reference, or does it have an internal one?
The ADS8507IDWG4 includes an internal 2.5-V reference (2.48–2.52 V, ±0.4%) with 8 ppm/°C drift, eliminating the need for an external reference in most applications. It also supports external 2.3–2.7-V references via the REF pin when higher precision or different voltage levels are required. The REFD pin allows disabling the internal reference when using an external source.
How does the BYTE pin affect data readout on the ADS8507IDWG4 parallel interface?
On the ADS8507IDWG4, the BYTE pin selects which 8-bit byte appears on D7–D0: when BYTE is low, D7–D0 output the 8 most significant bits (MSBs); when BYTE is high, they output the 8 least significant bits (LSBs). This allows full 16-bit data to be read in two consecutive cycles without bus contention-enabling compact microcontroller interfaces with limited data bus width.
What is the power consumption of the ADS8507IDWG4 during active conversion and in power-down mode?
The ADS8507IDWG4 consumes 24 mW typical (30 mW max) at 40 kSPS with 5-V supplies, and drops to ≤50 µW in power-down mode (PWRD = high). Recovery from power-down to full accuracy takes ≤1 ms, making it suitable for battery-powered or duty-cycled data loggers. Power supply sensitivity is ±8 LSB over ±2.5% VDIG/VANA variation-reducing need for ultra-stable regulators.
Is the ADS8507IDWG4 pin-compatible with other devices in the ADS85xx family?
Yes-the ADS8507IDWG4 is pin-compatible with the ADS7807 (16-bit) and ADS7806/8506 (12-bit) families in the same SO-28 package. This allows drop-in upgrades from 12-bit to 16-bit resolution without PCB changes. However, it is not pin-compatible with higher-speed variants like ADS8505IDW (same package but different timing and reference behavior) or ADS8326IBDW (SO-16, different pin count).
ADS8507IDWG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 40k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI, Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8507IDWG4 FAQ
1.How can I place an order for ADS8507IDWG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8507IDWG4 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 ADS8507IDWG4 reliable?
The price and inventory of ADS8507IDWG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8507IDWG4 is usually 5 days.
3.What payment methods are accepted for ADS8507IDWG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8507IDWG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8507IDWG4?
ADS8507IDWG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8507IDWG4 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 ADS8507IDWG4?
For technical support, including ADS8507IDWG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8507IDWG4 requirements.
6.How does Aetrix verify that ADS8507IDWG4 is sourced from the original manufacturer or authorized distributors?
All ADS8507IDWG4 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 ADS8507IDWG4 meets industry standards.
7.What is the process for return or replacement of ADS8507IDWG4?
All ADS8507IDWG4 units undergo pre-shipment inspection (PSI). If there is an issue with ADS8507IDWG4, 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 ADS8507IDWG4 part is unused and in its original packaging.
Return procedure for ADS8507IDWG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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