ADS7804U
Next-generation ADC for industrial and automotive apps: This -bit, us sampling CMOS ADC is perfect for demanding applicationADS7804U
Next-generation ADC for industrial and automotive apps: This -bit, us sampling CMOS ADC is perfect for demanding application
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製造商零件號 # : ADS7804U
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包裝/封裝: SOIC-28
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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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ADS7804U 數據表
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詳細說明
The ADS7804U is a complete 12-bit sampling analog-to-digital (A/D) converter using state-of-the-art CMOS structures. It contains a complete 12-bit, capacitor-based, SAR A/D converter with S/H, reference, clock, interface for microprocessor use, and three-state output drivers.The ADS7804 is specified at a 100kHz sampling rate, and guaranteed over the full temperature range. Laser-trimmed scaling resistors provide an industry-standard ±10V input range, while the innovative design allows operation from a single +5V supply, with power dissipation under 100mW.The 28-pin ADS7804 is available in plastic 0.3" DIP and SO packages, both fully specified for operation over the industrial –40°C to +85°C range.
主要特徵
- 100kHz min SAMPLING RATE
- STANDARD ±10V INPUT RANGE
- 72dB min SINAD WITH 45kHz INPUT
- ±0.45 LSB max INL
- DNL: 12 Bits "No Missing Codes"
- SINGLE +5V SUPPLY OPERATION
- PIN-COMPATIBLE WITH 16-BIT ADS7805
- USES INTERNAL OR EXTERNAL REFERENCE
- COMPLETE WITH S/H, REF, CLOCK, ETC.
- FULL PARALLEL DATA OUTPUT
- 100mW max POWER DISSIPATION
- 28-PIN 0.3" PLASTIC DIP AND SO PACKAGES
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 ! | 28 | Reach Compliance Code | compliant |
ECCN Code | EAR99 | HTS Code ! | 8542.39.00.01 |
Analog Input Voltage-Max | 10 V | Analog Input Voltage-Min | -10 V |
Conversion Time-Max | 8 µs | Converter Type | ADC, SUCCESSIVE APPROXIMATION |
JESD-30 Code | R-PDSO-G28 | JESD-609 Code | e4 |
Length | 17.9 mm | Linearity Error-Max (EL) | 0.022% |
Moisture Sensitivity Level | 3 | Number of Analog In Channels | 1 |
Number of Bits | 12 | Number of Functions | 1 |
Number of Terminals | 28 | Operating Temperature-Max | 85 °C |
Operating Temperature-Min | -40 °C | Output Bit Code | 2'S COMPLEMENT BINARY |
Output Format ! | PARALLEL, WORD | Package Body Material | PLASTIC/EPOXY |
Package Code | SOP | Package Equivalence Code | SOP28,.4 |
Package Shape | RECTANGULAR | Package Style | SMALL OUTLINE |
Peak Reflow Temperature (Cel) | 260 | Power Supplies ! | 5 V |
Qualification Status ! | Not Qualified | Sample Rate | 0.1 MHz |
Sample and Hold / Track and Hold | SAMPLE | Seated Height-Max | 2.65 mm |
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 | 7.5 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 ADS7804U?
The ADS7804U is a 12-bit, 4-channel analog-to-digital converter (ADC) manufactured by Texas Instruments. It is designed for applications requiring simultaneous multi-channel data acquisition, such as industrial automation, test and measurement, and data acquisition systems.
How Does ADS7804U Work?
The ADS7804U operates by converting analog input voltages from up to 4 channels into 12-bit digital output data. It utilizes a successive approximation register (SAR) architecture to achieve high-speed and high-accuracy conversion. The ADC features a flexible serial interface for easy integration with microcontrollers and digital signal processors.
How Many Pins does ADS7804U have and What are the Functions of the Pinout Configuration?
The ADS7804U is available in a 28-pin SSOP (Shrink Small Outline Package) package. The pinout configuration includes:
- VDD, AGND: Analog power supply and analog ground pins, respectively.
- VCC, DGND: Digital power supply and digital ground pins, respectively.
- AIN0-3: Analog input channels for simultaneous multi-channel conversion.
- CONVST: Conversion start control input.
- EOC: End of conversion output.
- CS, DOUT, CLK: Serial control interface pins.
What are the Pros and Cons of ADS7804U?
Pros:
- Simultaneous Sampling: Capable of sampling multiple channels simultaneously, reducing system latency.
- High Resolution: Offers 12-bit resolution for accurate data acquisition.
- Low Power Consumption: Operates with low power, suitable for battery-powered devices.
- Flexible Interface: Provides a serial interface for easy integration with microcontrollers and digital signal processors.
- Compact Package: The SSOP package is space-efficient, suitable for compact designs.
Cons:
- Limited Channel Count: Provides 4 analog input channels, which may be insufficient for applications requiring a larger channel count.
- External Components: May require external components such as amplifiers and filters for specific application requirements.
Are There Any Equivalents/Alternatives to ADS7804U for Recommendation?
- The ADS7805 from Texas Instruments is a 12-bit, 8-channel ADC offering similar functionality.
- Alternatives to the ADS7804U include the LTC2320-16 from Analog Devices and the MCP3204 from Microchip Technology.
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