ADS1251U
ADS1251U, Universal Analog-to-Digital Converters, TubularADS1251U
ADS1251U, Universal Analog-to-Digital Converters, Tubular
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製造商零件號 # : ADS1251U
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包裝/封裝: SOIC-8
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製造商: Texas Instruments
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產品分類 : Analog to Digital Converters (ADC)
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ADS1251U 數據表
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目前的價格方案正在編制中。請聯絡我們的客戶服務團隊獲取最新的價格資訊。感謝您的理解和支援!
詳細說明
The ADS1251 is a precision, wide dynamic range, delta-sigma, Analog-to-Digital (A/D) converter with 24-bit resolution operating from a single +5V supply. The delta-sigma architecture is used for wide dynamic range and to guarantee 24 bits of no missing codes performance. Effective resolution of 19 bits (1.5ppm of rms noise) is achieved for conversion rates up to 20kHz. The ADS1251 is designed for high-resolution measurement applications in cardiac diagnostics, smart transmitters, industrial process control, weight scales, chromatography, and portable instrumentation. The converter includes a flexible, 2-wire synchronous serial interface for low-cost isolation.The ADS1251 is a single-channel converter and is offered in an SO-8 package. It is pin-compatible with the faster ADS1252 (41.7kHz data rate).
![ADS1251U ADS1251U](/files/uploads/product/b/409f2233-b859-4c87-1987-08dbc6589f1f.webp)
主要特徵
- 24 BITS—NO MISSING CODES
- 19 BITS EFFECTIVE RESOLUTION UP TO 20kHz DATA RATE
- LOW NOISE: 1.5ppm
- DIFFERENTIAL INPUTS
- INL: 15ppm (max)
- EXTERNAL REFERENCE (0.5V to 5V)
- POWER-DOWN MODE
- SYNC MODE
- LOW POWER: 8mW at 20kHz5mW at 10kHz
應用
- CARDIAC DIAGNOSTICS
- DIRECT THERMOCOUPLE INTERFACES
- BLOOD ANALYSIS
- INFRARED PYROMETERS
- LIQUID/GAS CHROMATOGRAPHY
- PRECISION PROCESS CONTROL
規格
以下是所選零件的基本參數,涉及零件的特性及其所屬類別。
Pbfree Code | Yes | Rohs Code | Yes |
Part Life Cycle Code | Active | Part Package Code | SOIC |
Pin Count ! | 8 | Reach Compliance Code | compliant |
ECCN Code | EAR99 | HTS Code ! | 8542.39.00.01 |
Analog Input Voltage-Max | 5.25 V | Analog Input Voltage-Min | -4.096 V |
Conversion Time-Max | 50 µs | Converter Type | ADC, DELTA-SIGMA |
JESD-30 Code | R-PDSO-G8 | JESD-609 Code | e4 |
Length | 4.9 mm | Linearity Error-Max (EL) | 0.0015% |
Moisture Sensitivity Level | 2 | Number of Analog In Channels | 1 |
Number of Bits | 24 | Number of Functions | 1 |
Number of Terminals | 8 | Operating Temperature-Max | 85 °C |
Operating Temperature-Min | -40 °C | Output Bit Code | OFFSET BINARY, 2'S COMPLEMENT BINARY |
Output Format ! | SERIAL | Package Body Material | PLASTIC/EPOXY |
Package Code | SOP | Package Equivalence Code | SOP8,.25 |
Package Shape | RECTANGULAR | Package Style | SMALL OUTLINE |
Peak Reflow Temperature (Cel) | 260 | Power Supplies ! | 5 V |
Qualification Status ! | Not Qualified | Sample Rate | 0.02 MHz |
Seated Height-Max | 1.75 mm | Supply Current-Max | 2 mA |
Supply Voltage-Min | 4.75 V | Supply Voltage-Nom | 5 V |
Surface Mount ! | YES | Technology | CMOS |
Temperature Grade ! | INDUSTRIAL | Terminal Finish | NICKEL PALLADIUM GOLD |
Terminal Form ! | GULL WING | Terminal Pitch ! | 1.27 mm |
Terminal Position | DUAL | Time@Peak Reflow Temperature-Max (s) | 30 |
Width | 3.9 mm |
數據表 PDF
數據表記錄了器件的特性、絕對最大額定值、應用等,這對於作為器件特定應用的整體指南大有裨益。
常見問題解答
What is ADS1251U?
The ADS1251U is a precision 24-bit analog-to-digital converter (ADC) manufactured by Texas Instruments. It is designed for applications requiring high-resolution, low-noise analog-to-digital conversion, such as industrial automation, data acquisition systems, and instrumentation.
How Does ADS1251U Work?
The ADS1251U operates by converting analog voltage signals into digital data with high precision and accuracy. It features a delta-sigma architecture coupled with an integrated analog front-end to achieve low-noise performance and high resolution. The ADC offers programmable gain and low-power operation, making it suitable for battery-powered devices.
How Many Pins does ADS1251U have and What are the Functions of the Pinout Configuration?
The ADS1251U is housed in a 28-pin SSOP (Shrink Small Outline Package) package. The pinout configuration includes:
- AVDD, DVDD: Analog and digital power supply pins, respectively.
- AGND, DGND: Analog and digital ground pins, respectively.
- AIN0 to AIN3: Analog input channels.
- RFB: Reference buffer pin.
- CLK, DOUT, DIN, SCLK: Serial interface pins.
- DRDY: Data ready pin.
- RESET, PWDN: Reset and power-down pins.
What are the Pros and Cons of ADS1251U?
Pros:
- High Resolution: Provides 24-bit resolution for accurate measurements.
- Low Noise: Delivers low-noise performance, suitable for precision applications.
- Programmable Gain: Offers programmable gain settings for versatile signal conditioning.
- Low Power: Operates in low-power mode, extending battery life in portable devices.
- Integrated Features: Includes an integrated analog front-end for simplified system design.
Cons:
- Cost: High-resolution ADCs like the ADS1251U may have a higher cost compared to lower-resolution alternatives.
- Complexity: Requires careful consideration of grounding, noise, and layout for optimal performance.
- External Components: May need additional external components for specific applications or performance enhancements.
Are There Any Equivalents/Alternatives to ADS1251U for Recommendation?
- An equivalent part to the ADS1251U is the ADS1251 from Texas Instruments.
- Alternative options to the ADS1251U include the ADS1252 and ADS1253 also from Texas Instruments, offering variations in features and performance.
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