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Texas Instruments ADS7046IRUGR
- Part No.:
- ADS7046IRUGR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-XFQFN
- Datasheet:
-
ADS7046IRUGR.pdf
- Description:
- IC ADC 12BIT SAR 8X2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:549
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Product details
Overview
ADS7046IRUGR from Texas Instruments is a 12-bit, 3-MSPS successive-approximation register (SAR) analog-to-digital converter with single-ended input, unipolar 0 V to AVDD range, integrated offset calibration, and SPI-compatible serial interface operating up to 60 MHz. It delivers ±0.3-LSB INL, 71.2-dB SINAD at 2 kHz, and consumes only 3.8 mW at full throughput with 3.3-V AVDD - ideal for high-resolution, battery-powered sonar receivers and optical encoders.
For engineers reviewing the ADS7046IRUGR datasheet, ADS7046IRUGR pinout, ADS7046IRUGR application, or ADS7046IRUGR equivalent, this page provides verified technical context, package mapping, real-world use-value per application, and two validated alternative parts with documented functional and application-level differences.
Technical Context
The ADS7046IRUGR implements a true SAR architecture with internal capacitive DAC and comparator, where sampling occurs on the CS falling edge and conversion is clocked by SCLK - requiring exactly 15 SCLK cycles per sample. Its offset calibration runs automatically on power-up and during normal operation, maintaining ±1-LSB offset error across –40°C to +125°C and 2.35–3.6 V AVDD.
Digital I/O complies with JESD8-7A for DVDD = 1.65–1.95 V and supports wide-voltage operation up to 3.6 V, enabling direct interfacing with 1.8-V or 3.3-V host controllers without level shifters. The analog input stage uses a 16-pF sampling capacitor and 50-Ω switch resistance, optimized for low acquisition time (80 ns) and minimal charge kickback.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for high-fidelity signal digitization in precision sensing. |
| Throughput Rate | 3 MSPS - supports real-time sampling of ultrasonic bursts up to 1.5 MHz Nyquist bandwidth. |
| INL / DNL | ±0.3 LSB / ±0.15 LSB - ensures monotonicity and <0.1% code-dependent gain error in closed-loop control feedback paths. |
| SINAD @ 2 kHz | 71.2 dB - corresponds to ~11.5 effective bits, sufficient for thermal imaging pixel data and I-Q demodulator baseband signals. |
| Power @ 3 MSPS | 3.8 mW (3.3-V AVDD) - enables continuous high-speed acquisition in handheld radios with <10 µA average current per kSPS. |
| Analog Supply Range | 2.35 V to 3.6 V - allows direct integration with Li-ion battery rails (2.7–3.6 V) without LDO overhead. |
| Digital Supply Range | 1.65 V to 3.6 V - supports interoperability with modern low-voltage MCUs (e.g., ARM Cortex-M0+ at 1.8 V). |
Pinout & Package
The ADS7046IRUGR is housed in an 8-pin X2QFN package measuring 1.5 mm × 1.5 mm × 0.35 mm, optimized for space-constrained PCB layouts in portable instrumentation and optical modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CS | Digital input | Active-low chip-select initiates sampling on falling edge and defines SPI frame boundaries; tri-states SDO when high. |
| 2 - SDO | Digital output | Serial data output carrying 12-bit conversion result MSB-first; high-impedance when CS is high. |
| 3 - SCLK | Digital input | Serial clock up to 60 MHz drives both conversion timing and data shift-out; rising edge clocks data valid. |
| 4 - DVDD | Supply | Digital I/O supply (1.65–3.6 V); powers logic core and interface; decoupling required per JESD8-7A compliance. |
| 5 - GND | Supply | Common reference for all analog/digital signals; must be low-inductance connection to minimize noise coupling. |
| 6 - AVDD | Supply | Analog supply and internal reference (2.35–3.6 V); requires 3.3-µF ceramic decoupling to sustain charge demand during conversion. |
| 7 - AINP | Analog input | Positive single-ended analog input (0 V to AVDD); ESD-protected; connects to sensor output or signal chain. |
| 8 - AINM | Analog input | Negative input tied to GND for unipolar operation; used as reference node for pseudo-differential variants (not active in ADS7046). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated offset calibration | Maintains ±1-LSB offset error over full temperature and supply range, eliminating need for external calibration routines in field-deployed equipment. |
| Small X2QFN-8 package | 1.5 mm × 1.5 mm footprint reduces board area by >60% vs. standard VSSOP-8, critical for optical line card density and ultrasonic transducer arrays. |
| SPI-compatible interface | 60-MHz SCLK support enables sub-333-ns cycle time; no external protocol translation needed for STM32 or TI C2000 microcontrollers. |
| Low-power acquisition mode | Consumes only 5 µA static current (AVDD = 3.3 V), allowing ultra-low-duty-cycle wake-up sampling in battery-powered fish finders. |
| JESD8-7A digital I/O | Guarantees interoperability with 1.8-V logic families without level shifters, reducing BOM count and layout complexity in mixed-voltage systems. |
Applications
| Optical Encoders | Sonar Receivers |
|---|---|
Use Scenario: High-speed position tracking in industrial servo motors using quadrature-encoded light patterns. IC Role / Device Role / Timing Role: Digitizes analog photodiode outputs at 3 MSPS to resolve sub-micron motion increments with 12-bit linearity. Use Value: Enables real-time closed-loop control with <1-µs latency and ±0.3-LSB INL, reducing positional jitter in CNC motion systems. |
Use Scenario: Pulse-echo time-of-flight measurement in underwater sonar transceivers for depth mapping. IC Role / Device Role / Timing Role: Captures amplified echo waveforms with 71.2-dB SINAD at 2 kHz, supporting 1-cm resolution at 1500 m/s sound velocity. Use Value: Delivers clean baseband digitization for FFT-based target discrimination while consuming only 3.8 mW per channel. |
| Fish Finders | Thermal Imaging Cameras |
Use Scenario: Portable handheld devices detecting fish schools via broadband acoustic return signals. IC Role / Device Role / Timing Role: Samples low-noise amplifier outputs in burst mode at 100 kSPS, drawing just 115 µW to extend battery life. Use Value: Achieves 70.4-dB SINAD at 2.5-V AVDD, enabling accurate amplitude-based target classification in compact form factors. |
Use Scenario: Microbolometer array readout in uncooled infrared cameras for building diagnostics and security. IC Role / Device Role / Timing Role: Converts pixel voltage gradients at 3 MSPS with 12-bit resolution and integrated offset correction across thermal drift. Use Value: Maintains ±0.3-LSB INL from –40°C to +125°C, eliminating frame-to-frame non-uniformity correction in outdoor deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7042IRUGR | 12-bit, 1-MSPS, same X2QFN-8 package and pinout; lower throughput but identical INL/SINAD specs at reduced speed. | Better suited for cost-sensitive optical encoders where 3-MSPS is unnecessary; saves power (1.3 mW @ 1 MSPS). | Select ADS7042IRUGR if system sampling rate ≤1 MSPS and board layout reuse is required. |
| ADS7047IRUGR | 12-bit, 3-MSPS, fully differential input (AINP/AINM active), same package and timing; requires differential driver but improves CMRR. | Preferred for sonar receivers with transformer-coupled inputs or noisy environments where common-mode rejection >80 dB is critical. | Choose ADS7047IRUGR when signal source is differential and SNR improvement >2 dB justifies added front-end complexity. |
Compared with ADS7046IRUGR, ADS7042IRUGR trades throughput for lower power and cost in static-sensing applications, while ADS7047IRUGR adds differential input capability for enhanced noise immunity - neither is pin-compatible with ADS7046IRUGR in functional mode, but all three share identical physical packaging and SPI interface timing.
Availability
ADS7046IRUGR is available at Aetrix Electronics and suitable for optical encoders, sonar receivers, and thermal imaging cameras requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for ADS7046IRUGR 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 signal chain solutions.
The ADS7046IRUGR belongs to TI's high-speed, low-power SAR ADC family designed specifically for space-constrained, battery-operated instrumentation - emphasizing small footprint, integrated calibration, and wide supply flexibility.
FAQ
What is the maximum sampling rate supported by the ADS7046IRUGR?
The ADS7046IRUGR supports a maximum throughput rate of 3 MSPS, achieved with a 60-MHz SCLK and proper setup/hold timing. This rate is guaranteed across the full operating temperature range (–40°C to +125°C) and AVDD supply range (2.35 V to 3.6 V). At 3 MSPS, the ADS7046IRUGR delivers 71.2-dB SINAD at 2 kHz, making it suitable for demanding real-time acquisition tasks such as sonar echo processing and optical encoder interpolation.
Does the ADS7046IRUGR require an external voltage reference?
No, the ADS7046IRUGR uses AVDD as its internal reference voltage, eliminating the need for an external reference. The full-scale input range is 0 V to AVDD, and the device's performance specifications - including INL, SINAD, and offset error - are characterized with AVDD serving as both supply and reference. A 3.3-µF low-ESR ceramic capacitor between AVDD and GND is mandatory to stabilize the reference during conversion.
Can the ADS7046IRUGR operate with a 1.8-V digital supply?
Yes, the ADS7046IRUGR supports DVDD from 1.65 V to 3.6 V and is JESD8-7A compliant for DVDD = 1.65–1.95 V. At 1.8 V, digital I/O thresholds meet standard CMOS levels (VIH = 1.17 V, VIL = 0.63 V), enabling direct interface with 1.8-V microcontrollers like the MSP430FRxx or nRF52840 without level-shifting circuitry. Power consumption scales linearly with DVDD, reducing digital supply current proportionally.
How does the integrated offset calibration work in the ADS7046IRUGR?
The ADS7046IRUGR performs automatic offset calibration on power-up and during normal operation in the OFFCAL state, triggered by specific CS/SCLK sequences. This calibration maintains offset error within ±1 LSB across –40°C to +125°C and 2.35–3.6 V AVDD, without requiring host intervention. The calibrated offset is stored internally and applied in real time, ensuring consistent DC accuracy in thermal imaging and precision sensor interfaces where manual calibration is impractical.
Is the ADS7046IRUGR pin-compatible with other devices in the same family?
Yes, the ADS7046IRUGR shares identical pinout and package (X2QFN-8, 1.5 mm × 1.5 mm) with ADS7040/41/42/43/44/47/52/54/56/57, enabling hardware reuse across resolutions (8–14 bit), throughputs (1–3 MSPS), and input types (single-ended, pseudo-differential, fully differential). However, functional compatibility depends on configuration - for example, ADS7047IRUGR uses both AINP and AINM actively, while ADS7046IRUGR treats AINM as GND reference.
ADS7046IRUGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-XFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 3M
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- Supply
- Voltage - Supply, Analog:
- 2.35V ~ 3.6V
- Voltage - Supply, Digital:
- 1.65V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 8-X2QFN (1.5x1.5)
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
ADS7046IRUGR FAQ
1.How can I place an order for ADS7046IRUGR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS7046IRUGR 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 ADS7046IRUGR reliable?
The price and inventory of ADS7046IRUGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7046IRUGR is usually 5 days.
3.What payment methods are accepted for ADS7046IRUGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS7046IRUGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS7046IRUGR?
ADS7046IRUGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS7046IRUGR 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 ADS7046IRUGR?
For technical support, including ADS7046IRUGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7046IRUGR requirements.
6.How does Aetrix verify that ADS7046IRUGR is sourced from the original manufacturer or authorized distributors?
All ADS7046IRUGR 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 ADS7046IRUGR meets industry standards.
7.What is the process for return or replacement of ADS7046IRUGR?
All ADS7046IRUGR units undergo pre-shipment inspection (PSI). If there is an issue with ADS7046IRUGR, 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 ADS7046IRUGR part is unused and in its original packaging.
Return procedure for ADS7046IRUGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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