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Texas Instruments ADS8507IDWR
- Part No.:
- ADS8507IDWR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADS8507IDWR.pdf
- Description:
- IC ADC 16BIT SAR 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,011
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Product details
Overview
ADS8507IDWR from Texas Instruments is a 16-bit, 40-kSPS successive approximation register (SAR) analog-to-digital converter with internal 2.5-V reference, parallel/serial dual interface, ±10-V input range capability, and industrial −40°C to +85°C operation. It integrates sample-and-hold, clock, reference buffer, and configurable data coding (2's complement or straight binary), targeting precision data acquisition in process control and test equipment.
For engineers reviewing the ADS8507IDWR datasheet, ADS8507IDWR pinout, ADS8507IDWR application, or ADS8507IDWR equivalent, key selection factors include its 89.9-dB SINAD at 10 kHz, ±1.5 LSB max INL, 24 mW typical power at full rate, SO-28 package compatibility, and support for both internal and external reference configurations.
Technical Context
The ADS8507IDWR implements a capacitor-based SAR architecture with integrated sample-and-hold and programmable input ranges (±10 V, 0–5 V, 0–4 V). Its dual-mode interface supports simultaneous parallel 16-bit output (via BYTE-selectable 8-bit nibbles) and SPI-compatible serial output with TAG daisy-chain capability.
Control logic uses asynchronous CS/R/C timing with BUSY-driven status signaling; EXT/INT selects internal vs. external DATACLK synchronization, while SB/BTC configures output coding format. Reference management includes internal 2.5-V source (±0.4 ppm/°C drift) and external 2.3–2.7-V support with REFD shutdown control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 1 LSB = 305 µV for ±10-V range, enabling sub-millivolt measurement fidelity. |
| Sampling Rate | 40 kSPS - supports real-time capture of signals up to 130 kHz usable bandwidth per SINAD spec. |
| SINAD | 89.9 dB at 10 kHz - ensures high-fidelity digitization of medium-frequency sensor or instrumentation signals. |
| INL / DNL | ±1.5 LSB max INL, ±1.5 LSB max DNL - guarantees monotonicity and <0.0023% full-scale linearity error. |
| Reference | Internal 2.5-V ±0.1% (2.48–2.52 V), 8 ppm/°C drift - eliminates external reference component count without sacrificing stability. |
| Power Dissipation | 24 mW typ at 40 kSPS; 50 µW in PWRD mode - enables low-power embedded DAQ systems with rapid wake-up. |
| Input Range | Configurable ±10 V / 0–5 V / 0–4 V - accommodates bipolar industrial sensors and unipolar transducers without signal conditioning. |
Pinout & Package
ADS8507IDWR is housed in a 28-pin SOIC (SO-28, DW package) with exposed pad not present; lead pitch is 1.27 mm, body width 7.5 mm, and RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| R1IN, R2IN | Differential analog inputs | Accept ±10-V, 0–5-V, or 0–4-V ranges; survive ±25-V fault without damage. |
| REF, CAP | Reference buffer I/O and decoupling node | Outputs internal 2.5-V ref; requires 2.2-µF tantalum to AGND2 for stability. |
| SB/BTC, EXT/INT, BYTE | Configuration control inputs | Select output coding (2's complement/straight binary), clock source (internal/external), and parallel byte order (MSB/LSB first). |
| D0–D7, BUSY, CS, R/C | Parallel data and control I/O | Enable 16-bit parallel read via two 8-bit cycles; BUSY indicates conversion completion and data validity. |
| SDATA, DATACLK, TAG | Serial interface I/O | Support SPI-compatible daisy-chain (TAG) and synchronous data transfer with programmable edge sampling. |
| PWRD, REFD | Power management inputs | Assert PWRD to reduce current to 50 µW; assert REFD to disable internal reference and force external use. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-compatible upgrade path | Direct replacement for ADS7807 (16-bit) and ADS7806/8506 (12-bit), enabling resolution scaling without PCB redesign. |
| Dual parallel/serial interface | Eliminates need for external interface logic: parallel mode offers fastest system throughput; serial mode reduces pin count and supports multi-device daisy-chaining. |
| Overvoltage-tolerant inputs | R1IN/R2IN withstand ±25 V continuously - simplifies front-end protection design in noisy industrial environments. |
| Flexible reference architecture | Internal 2.5-V reference usable out-of-box; external reference option allows system-level voltage calibration and improved long-term drift performance. |
| Low-power operation modes | 24 mW active power and 50 µW deep power-down enable battery-backed or energy-constrained DAQ applications with fast wake-up (<1 ms recovery). |
Applications
| Industrial Process Monitoring | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: Continuous monitoring of 4–20 mA loop outputs, thermocouple signals, and pressure transducer voltages in PLC I/O modules. IC Role / Device Role / Timing Role: Primary ADC capturing analog sensor data at 40 kSPS with ±10-V range and 16-bit resolution for closed-loop control feedback. Use Value: ±1.5 LSB INL and 89.9-dB SINAD ensure accurate representation of slow-drift industrial signals without post-acquisition linearization. | Use Scenario: Digitizing stimulus-response waveforms during functional testing of mixed-signal ICs and power supplies. IC Role / Device Role / Timing Role: High-fidelity acquisition engine synchronized to test pattern generator clocks via EXT/INT-controlled DATACLK. Use Value: Dual parallel/serial interface allows flexible integration-parallel for speed-critical capture, serial for compact multi-channel setups with TAG daisy-chain. |
| Medical Data Acquisition | High-Accuracy Instrumentation |
Use Scenario: ECG and EEG signal conditioning in portable diagnostic devices requiring low power and clinical-grade accuracy. IC Role / Device Role / Timing Role: Low-noise, low-power ADC converting amplified biopotential signals with 0–5 V unipolar range and software-trimmable offset. Use Value: 50 µW power-down mode extends battery life; ±3 mV unipolar zero error and ±0.5 ppm/°C drift meet Class II medical device stability requirements. | Use Scenario: Precision DC voltage and current measurement in benchtop multimeters and calibration standards. IC Role / Device Role / Timing Role: Reference-grade converter using external 2.5-V reference (REFD = high) and software gain/offset correction for <0.01% FSR accuracy. Use Value: ±0.25% full-scale error (with external ref), 83–89.9 dB SINAD across frequency, and 20 ns aperture jitter support metrology-grade measurements. |
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 |
|---|---|---|---|
| ADS8505IDWR | 16-bit, 250-kSPS, no internal reference, requires external 2.5-V ref; SO-28 pinout identical but different REF/REFD functionality. | Better suited for high-speed, externally referenced systems where internal ref adds noise or drift. | Choose ADS8505IDWR when sampling >40 kSPS is required and system already provides ultra-stable reference. |
| ADS8515IPW | 16-bit, 250-kSPS, internal 2.5-V ref, TSSOP-28 package; differs in pinout (e.g., no TAG, different control pin mapping), higher power (35 mW). | Targeted at space-constrained designs needing higher throughput but accepting larger package footprint and no daisy-chain. | Choose ADS8515IPW when board area permits TSSOP and >40 kSPS sampling is mandatory. |
Compared with ADS8505IDWR and ADS8515IPW, the ADS8507IDWR uniquely balances 40-kSPS throughput, integrated reference, SO-28 compatibility, and TAG daisy-chain-making it optimal for cost-sensitive, medium-speed industrial DAQ where layout reuse and system-level simplicity are prioritized.
Availability
ADS8507IDWR is available at Aetrix Electronics and suitable for industrial process control, automated test equipment, and medical data acquisition systems requiring stable component supply, long-lifecycle support, and guaranteed traceability.
Supply support for ADS8507IDWR 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 ADS8507IDWR belongs to TI's precision data acquisition portfolio, designed specifically for medium-speed, high-accuracy industrial and instrumentation applications where integration, robustness, and interface flexibility are critical.
FAQ
What input voltage ranges does the ADS8507IDWR support?
The ADS8507IDWR supports three configurable input ranges: ±10 V (bipolar), 0–5 V (unipolar), and 0–4 V (unipolar), selected via external resistor networks per Figure 42/43 in the datasheet. Input pins R1IN and R2IN tolerate ±25 V continuously without damage, enhancing system ruggedness in industrial settings.
Does the ADS8507IDWR require an external reference?
No-the ADS8507IDWR includes an internal 2.5-V reference (2.48–2.52 V, ±0.4 ppm/°C drift) that can be used directly. However, it also accepts external 2.3–2.7-V references; asserting REFD disables the internal reference and forces external usage, useful for systems demanding tighter long-term stability.
How does the parallel/serial dual interface operate on the ADS8507IDWR?
The ADS8507IDWR provides simultaneous parallel and serial access: parallel mode uses D0–D7 with BYTE select for 16-bit reads in two 8-bit cycles; serial mode uses SDATA/DATACLK with TAG for daisy-chainable SPI-compatible output. EXT/INT pin determines whether DATACLK is input (external sync) or output (internal clock pulses).
What is the power consumption profile of the ADS8507IDWR?
The ADS8507IDWR consumes 24 mW typical at 40 kSPS (VDIG = VANA = 5 V); in power-down mode (PWRD = high), it draws ≤50 µW. Recovery time to full accuracy after wake-up is 1 ms, enabling rapid duty-cycled operation in battery-powered DAQ systems without sacrificing measurement integrity.
Is the ADS8507IDWR pin-compatible with earlier TI ADCs?
Yes-the ADS8507IDWR is explicitly pin-compatible with the ADS7807 (16-bit) and ADS7806/8506 (12-bit) in the same SO-28 package. This allows direct drop-in upgrades to higher resolution without PCB layout changes, preserving existing signal routing, decoupling, and thermal design.
ADS8507IDWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- -
ADS8507IDWR FAQ
1.How can I place an order for ADS8507IDWR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8507IDWR 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 ADS8507IDWR reliable?
The price and inventory of ADS8507IDWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8507IDWR is usually 5 days.
3.What payment methods are accepted for ADS8507IDWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8507IDWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8507IDWR?
ADS8507IDWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8507IDWR 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 ADS8507IDWR?
For technical support, including ADS8507IDWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8507IDWR requirements.
6.How does Aetrix verify that ADS8507IDWR is sourced from the original manufacturer or authorized distributors?
All ADS8507IDWR 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 ADS8507IDWR meets industry standards.
7.What is the process for return or replacement of ADS8507IDWR?
All ADS8507IDWR units undergo pre-shipment inspection (PSI). If there is an issue with ADS8507IDWR, 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 ADS8507IDWR part is unused and in its original packaging.
Return procedure for ADS8507IDWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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