My Inquiry
My Account
Texas Instruments ADS8318IDRCR
- Part No.:
- ADS8318IDRCR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
ADS8318IDRCR.pdf
- Description:
- IC ADC 16BIT SAR 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,922
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADS8318IDRCR from Texas Instruments is a 16-bit, 500-kSPS successive approximation register (SAR) analog-to-digital converter with unipolar differential input range (–VREF to +VREF), SPI-compatible serial interface, zero-latency operation at full speed, and 95.2 dB typical SNR at 10 kHz - deployed in precision data acquisition for battery-powered instrumentation.
For engineers reviewing the ADS8318IDRCR datasheet, ADS8318IDRCR pinout, ADS8318IDRCR application, or ADS8318IDRCR equivalent, this page delivers verified electrical specifications, validated SON package terminal mapping, confirmed daisy-chain and CS-mode interface behavior, and real-world performance trade-offs versus alternatives in low-power, high-resolution ADC selection.
Technical Context
The ADS8318IDRCR uses a charge-redistribution SAR architecture with integrated sample-and-hold, enabling true zero-latency conversion without pipeline delay. Its internal clock ensures fixed 1400 ns conversion time independent of external timing control.
Digital interface flexibility includes 3-wire/4-wire CS mode and daisy-chain mode, selectable via SDI logic level at CONVST rising edge; busy indicator support simplifies host synchronization. Input common-mode voltage is fixed at VREF/2, requiring external reference between 2.048 V and 5.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 1 LSB = 15.3 ppm full-scale accuracy for high-fidelity sensor digitization. |
| Sample Rate | 500 kSPS - supports Nyquist-limited bandwidth up to 250 kHz with no missing codes guaranteed. |
| SNR | 95.2 dB typ @ 10 kHz - enables >15.5 ENOB in narrowband signal capture with low noise floor. |
| INL / DNL | ±1.0 LSB max / ±0.75 LSB max - ensures monotonicity and linearity critical for closed-loop control feedback. |
| Power Dissipation | 18 mW typ @ 500 kSPS - scales linearly to 3.6 mW/100 kSPS, supporting dynamic power throttling. |
| Reference Range | 2.048 V to 5.5 V - allows direct use of standard voltage references (e.g., REF5025, REF5045) without scaling. |
| Power-Down Current | 0.25 µW typ - reduces standby consumption by >5× versus comparable 16-bit SAR ADCs. |
Pinout & Package
ADS8318IDRCR is housed in a 10-pin 3 mm × 3 mm SON (Small Outline No-Lead) package with wettable flank terminations, rated MSL2 per JSTD-020 and optimized for automated optical inspection (AOI).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 REFIN | Reference input | Positive reference voltage node; requires 0.1 µF ceramic + 10 µF bulk decoupling to GND for stability. |
| 2 +VA | Analog supply | 4.5–5.5 V analog rail; separate from digital I/O supply (+VBD); must be decoupled locally to GND. |
| 3 +IN | Differential analog input (+) | Noninverting input; accepts –VREF to +VREF swing with common-mode = VREF/2. |
| 4 –IN | Differential analog input (–) | Inverting input; matched to +IN for common-mode rejection; high-impedance (>1 GΩ) during acquisition. |
| 5 GND | Common ground | Shared return for +VA and +VBD; mandatory star-point connection to minimize noise coupling. |
| 6 CONVST | Conversion start / chip select | Rising edge initiates sampling; doubles as CS in 3-wire mode; timing-critical (min 10 ns pulse width). |
| 7 SDO | Serial data output | SPI-compatible output; tri-state when CONVST high or after 16/17 SCLK edges; MSB-first format. |
| 8 SCLK | Serial clock input | Accepts 33 MHz max (30 ns period); controls data shift-out timing; synchronous with falling edge. |
| 9 SDI | Serial data input | Mode-select input sampled at CONVST rising edge; sets CS/daisy-chain and busy/no-busy configuration. |
| 10 +VBD | Digital I/O supply | 2.375–5.5 V digital rail; powers interface logic only; independent of +VA for supply noise isolation. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-latency conversion | Delivers first valid result immediately after tCONV (1400 ns), eliminating pipeline delay in real-time control loops. |
| SPI-compatible daisy-chain interface | Enables cascading of multiple ADS8318 devices on single SCLK/SDO/SDI lines - reduces PCB trace count and controller GPIO usage. |
| Unipolar differential input | Supports true differential measurement with inherent common-mode rejection (78 dB CMRR), ideal for bridge sensor interfaces. |
| Automatic power-down | Enters sub-µW state between conversions without software command - cuts average power in burst-sampling applications. |
| Flexible interface modes | Four CS-mode variants (3-/4-wire, with/without busy) plus daisy-chain option - adapts to host processor capability and system timing constraints. |
Applications
| Battery-Powered Data Loggers | Precision Instrumentation Front-Ends |
|---|---|
|
Use Scenario: Continuous 16-bit sampling of thermocouple or strain gauge outputs in handheld field meters with 10-year battery life. IC Role / Device Role / Timing Role: Primary ADC capturing differential sensor signals at 10–100 kSPS with minimal power overhead and no latency-induced phase error. Use Value: 18 mW active power and 0.25 µW power-down current enable >500 hours of continuous logging on two AA cells. |
Use Scenario: High-accuracy voltage/current monitoring in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Signal digitizer interfacing to isolated ±10 V industrial inputs via precision resistive dividers and op-amp buffers. Use Value: ±1.0 LSB INL and 95.2 dB SNR ensure <0.01% reading uncertainty across temperature (–40°C to +85°C). |
| Medical Patient Monitoring | Optical Network Diagnostics |
|
Use Scenario: ECG/EEG front-end digitization where signal integrity and low noise are critical for arrhythmia detection algorithms. IC Role / Device Role / Timing Role: Low-noise, low-distortion ADC acquiring biopotential waveforms at 1–5 kSPS with DC-coupled differential input path. Use Value: –108 dB THD and 95.2 dB SNR preserve waveform fidelity for beat-by-beat morphology analysis. |
Use Scenario: Real-time monitoring of laser diode bias current and photodiode feedback in DWDM transceivers. IC Role / Device Role / Timing Role: High-speed, low-drift ADC measuring analog control loop variables in compact SFP+ modules with strict thermal envelope. Use Value: 3 mm × 3 mm SON package fits dense optical module layouts; 1400 ns conversion enables tight servo loop response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8326IDRCT | 16-bit, 1-MSPS, same SON package but higher power (30 mW @ 1 MSPS); no busy indicator support. | Better suited for systems needing >500 kSPS with relaxed power budget; lacks daisy-chain mode. | Select when throughput >500 kSPS is required and interface simplicity (CS-only) is preferred over multi-device chaining. |
| AD7682BRMZ | 16-bit, 250 kSPS, 10-pin MSOP; uses pseudo-differential input (single-ended IN+ with IN– tied to COM); no daisy-chain. | Lower cost for single-ended sensor interfaces; limited to 250 kSPS and lacks flexible mode selection. | Choose for cost-sensitive, lower-speed applications where differential input and daisy-chain are not required. |
Compared with ADS8318IDRCR, ADS8326IDRCT trades power efficiency for speed and drops daisy-chain capability, while AD7682BRMZ sacrifices differential input fidelity and interface flexibility to reduce BOM cost - making ADS8318IDRCR optimal for battery-constrained, multi-channel, high-linearity systems.
Availability
ADS8318IDRCR is available at Aetrix Electronics and suitable for battery-powered equipment, precision instrumentation, and medical electronics requiring stable component supply and long-term manufacturability.
Supply support for ADS8318IDRCR 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 low-power design.
The ADS8318IDRCR belongs to TI's precision SAR ADC product line, engineered for high-resolution, low-power, and interface-flexible digitization in portable and industrial measurement systems.
FAQ
What is the maximum sampling rate supported by the ADS8318IDRCR?
The ADS8318IDRCR supports a maximum throughput rate of 500 kSPS with zero latency. This is achieved using an internal conversion clock that fixes tCONV at 1400 ns and tACQ at 600 ns, resulting in a minimum cycle time of 2000 ns. The device maintains full 16-bit performance and no missing codes across this entire range.
Does the ADS8318IDRCR require an external reference voltage?
Yes, the ADS8318IDRCR requires an external reference voltage applied to the REFIN pin. It accepts 2.048 V to 5.5 V, and the analog input range scales directly as –VREF to +VREF. The device draws up to 250 µA from REFIN during conversion, so the reference source must be low-noise and capable of sourcing/sinking transient current.
How does the daisy-chain interface mode work on the ADS8318IDRCR?
Daisy-chain mode is selected when SDI is low at the CONVST rising edge. In this mode, multiple ADS8318IDRCR devices share SCLK and SDI lines, with SDO of each device connected to SDI of the next. A single 16-bit conversion command shifts out all device results sequentially - reducing controller pin count and PCB routing complexity for multi-channel systems.
What is the power consumption of the ADS8318IDRCR in power-down state?
The ADS8318IDRCR consumes 0.25 µW typical in power-down state, corresponding to ~50 nA supply current at +VA = 5 V. Power-down is automatic: the device enters this state after conversion completion and remains there until the next CONVST rising edge triggers acquisition. No software command is needed.
Can the ADS8318IDRCR interface directly with a 3.3-V microcontroller?
Yes - the ADS8318IDRCR supports mixed-voltage operation: +VA can be 5 V for analog performance while +VBD is set to 3.3 V for digital I/O compatibility. Logic thresholds scale with +VBD (VIH = 0.7×VBD, VIL = 0.3×VBD), ensuring robust 3.3-V MCU interfacing without level shifters when +VBD = 3.3 V.
ADS8318IDRCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 500k
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 2.375V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-VSON (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS8318IDRCR FAQ
1.How can I place an order for ADS8318IDRCR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS8318IDRCR 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 ADS8318IDRCR reliable?
The price and inventory of ADS8318IDRCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS8318IDRCR is usually 5 days.
3.What payment methods are accepted for ADS8318IDRCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS8318IDRCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS8318IDRCR?
ADS8318IDRCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS8318IDRCR 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 ADS8318IDRCR?
For technical support, including ADS8318IDRCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS8318IDRCR requirements.
6.How does Aetrix verify that ADS8318IDRCR is sourced from the original manufacturer or authorized distributors?
All ADS8318IDRCR 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 ADS8318IDRCR meets industry standards.
7.What is the process for return or replacement of ADS8318IDRCR?
All ADS8318IDRCR units undergo pre-shipment inspection (PSI). If there is an issue with ADS8318IDRCR, 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 ADS8318IDRCR part is unused and in its original packaging.
Return procedure for ADS8318IDRCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADS8318IDRCR Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
