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ADS7844E
8-Channel inputADS7844E
8-Channel input
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Manufacturer Part # : ADS7844E
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Package/Case: SSOP-20
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Brand: Texas Instruments
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Product Categories : Analog to Digital Converters (ADC)
Quality Assurance
Quality Assurance
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Certification
We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.
Shipping & Payment
Shipping & Payment
About Shipping
We generally ship orders within a few business days through reliable shipping carriers such as FedEx, SF, UPS, or DHL. We also have support for other shipping methods. If you would like to inquire about specific shipping details or costs, please don't hesitate to reach out to us.
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Service & Packaging
Service & Packaging
About After Sales Service
All Parts Extended Quality Guarantee
Initiate the application within 90 days from the shipment date.
Confirm the return or exchange with our staff.
Maintain the goods in their original condition as received.
Lastly, please note that the eligibility for return or exchange of goods is subject to an assessment of the actual condition of the returned items. We will evaluate the received goods before finalizing the return or exchange process. If you have any inquiries or require further assistance regarding returns or exchanges, please don't hesitate to contact us at [email protected]
About packaging
Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.
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ADS7844E DataSheet
Pricing (USD)
| Quantity | Unit Price | Ext. Price |
|---|---|---|
| 1 | $6.068 | $6.07 |
| 10 | $5.349 | $53.49 |
| 50 | $4.909 | $245.45 |
| 100 | $4.540 | $454.00 |
These prices are subject to market fluctuations, and a quote submission is required to obtain the latest prices.
Details
The ADS7844E is an 8-channel, 12-bit sampling analog-to-digital converter (ADC) with a synchronous serial interface. Typical power dissipation is 3mW at a 200kHz throughput rate and a +5V supply. The reference voltage (VREF) can be varied between 100mV and VCC, providing a corresponding input voltage range of 0V to VREF. The device includes a shutdown mode which reduces power dissipation to under 1µW. The ADS7844 is guaranteed down to 2.7V operation.Low power, high speed, and on-board multiplexer make the ADS7844 ideal for battery- operated systems such as personal digital assistants, portable multichannel data loggers, and measurement equipment. The serial interface also provides low-cost isolation for remote data acquisition. The ADS7844 is available in a 20-lead QSOP package and the MAX147 equivalent 20-lead SSOP is guaranteed over the –40°C to +85°C temperature range.
Key Features
- SINGLE SUPPLY: 2.7V to 5V
- 8-CHANNEL SINGLE-ENDED OR 4-CHANNEL DIFFERENTIAL INPUT
- UP TO 200kHz CONVERSION RATE
- ±1 LSB MAX INL AND DNL
- NO MISSING CODES
- 72dB SINAD
- SERIAL INTERFACE
- 20-LEAD QSOP AND 20-LEAD SSOP PACKAGES
- ALTERNATE SOURCE FOR MAX147
Application
- DATA ACQUISITION
- TEST AND MEASUREMENT
- INDUSTRIAL PROCESS CONTROL
- PERSONAL DIGITAL ASSISTANTS
- BATTERY-POWERED SYSTEMS
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Pbfree Code | Yes | Rohs Code | Yes |
| Part Life Cycle Code | Active | Part Package Code | QSOP |
| Pin Count ! | 20 | Reach Compliance Code | compliant |
| ECCN Code | EAR99 | HTS Code ! | 8542.39.00.01 |
| Analog Input Voltage-Max | 5.25 V | Analog Input Voltage-Min | |
| Conversion Time-Max | 0.75 µs | Converter Type | ADC, SUCCESSIVE APPROXIMATION |
| JESD-30 Code | R-PDSO-G20 | JESD-609 Code | e4 |
| Length | 8.65 mm | Linearity Error-Max (EL) | 0.0488% |
| Moisture Sensitivity Level | 2 | Number of Analog In Channels | 8 |
| Number of Bits | 12 | Number of Functions | 1 |
| Number of Terminals | 20 | Operating Temperature-Max | 85 °C |
| Operating Temperature-Min | -40 °C | Output Bit Code | BINARY |
| Output Format ! | SERIAL | Package Body Material | PLASTIC/EPOXY |
| Package Code | SSOP | Package Equivalence Code | SSOP20,.25 |
| Package Shape | RECTANGULAR | Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 | Power Supplies ! | 3/5 V |
| Qualification Status ! | Not Qualified | Sample Rate | 0.2 MHz |
| Sample and Hold / Track and Hold | SAMPLE | Seated Height-Max | 1.75 mm |
| Supply Voltage-Min | 1.9 V | Supply Voltage-Nom | 2.7 V |
| Surface Mount ! | YES | Technology | CMOS |
| Temperature Grade ! | INDUSTRIAL | Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form ! | GULL WING | Terminal Pitch ! | 0.635 mm |
| Terminal Position | DUAL | Time@Peak Reflow Temperature-Max (s) | 30 |
| Width | 3.9 mm |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is ADS7844E?
The ADS7844E is a 12-bit, 4-channel analog-to-digital converter (ADC) designed by Texas Instruments. It is suitable for applications requiring high-resolution conversion of multiple analog signals, such as data acquisition systems, industrial automation, and control systems.
How Does ADS7844E Work?
The ADS7844E operates by converting analog input voltages into digital data with 12-bit resolution for each of its four channels. It utilizes a successive approximation register (SAR) architecture to achieve accurate and reliable conversion results. The converter features a serial interface for communication with microcontrollers or digital signal processors.
How Many Pins does ADS7844E have and What are the Functions of the Pinout Configuration?
The ADS7844E is housed in a 16-pin SSOP (Shrink Small Outline Package) package. The pinout configuration includes:
- VCC, GND: Power supply and ground pins.
- AIN0-AIN3: Analog input channels.
- REF+ and REF-: Reference voltage input pins.
- CS, DOUT, DIN, CLK: Serial communication interface pins.
- CONVST: Start of conversion input.
- EOC: End of conversion output.
What are the Pros and Cons of ADS7844E?
Pros:
- Multi-Channel Conversion: Provides 4-channel simultaneous conversion for efficient signal processing.
- 12-Bit Resolution: Offers high-resolution conversion for accurate measurement applications.
- Serial Interface: Allows easy integration with digital systems for data transmission.
- Low Power Consumption: Operates with low power consumption, suitable for battery-powered devices.
- Compact Package: The SSOP package is space-efficient, saving board space in designs.
Cons:
- Limited Channels: May not be suitable for applications requiring more than 4 analog input channels.
- External Components: Requires additional external components for voltage reference and signal conditioning in some applications.
- Resolution Trade-off: Higher resolution may result in slower conversion speeds in certain scenarios.
Are There Any Equivalents/Alternatives to ADS7844E for Recommendation?
- The ADS7846 from Texas Instruments is a similar 4-channel ADC with touchscreen controller functionality.
- Alternatives to the ADS7844E include the MCP3204 from Microchip Technology and the ADC121S101 from Analog Devices.
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