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ADS7844EB
+Lista de MateriaisIC ADC 12BIT SAR 20SSOP
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FabricanteTexas Instruments
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Peça do Fabricante #ADS7844EB
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Pacote SSOP-20
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Em Estoque3681
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Especificações
| Atributo | Valor |
| Package | Bulk,Tube |
| ProductStatus | Active |
| NumberofBits | 12 |
| SamplingRate(PerSecond) | 200k |
| NumberofInputs | 4, 8 |
| InputType | Differential, Single Ended |
| DataInterface | SPI |
| Configuration | MUX-S/H-ADC |
| Ratio-S/H:ADC | 1:1 |
| NumberofA/DConverters | 1 |
| Architecture | SAR |
| ReferenceType | External |
| Voltage-SupplyAnalog | 2.7V ~ 3.6V, 5V |
| Voltage-SupplyDigital | 2.7V ~ 3.6V, 5V |
| OperatingTemperature | -40°C ~ 85°C |
| Package/Case | 20-SSOP (0.154, 3.90mm Width) |
| SupplierDevicePackage | 20-SSOP |
Visão Geral
Description
Key features include:
1. Resolution and Channels: The ADS7844 offers 12-bit resolution across four analog input channels.
2. Interface: The device uses a standard serial peripheral interface (SPI), allowing seamless integration with microcontrollers and digital signal processors.
3. Sampling Rate: It supports a maximum sampling rate of 200 kSPS (kilosamples per second).
4. Power: The evaluation board operates on a single supply voltage ranging from 2.7V to 5.25V.
5. Versatility: Useful in applications like industrial process control, portable instrumentation, and data acquisition systems.
The evaluation board helps users quickly prototype and test the ADS7844's performance, making it a valuable tool for engineers and developers working with analog-to-digital conversion.
Equivalent
1. AD7887 - 12-bit, 8-channel ADC from Analog Devices.
2. MCP3204 - 12-bit, 4-channel ADC from Microchip Technology.
3. MAX11113 - 12-bit, 4-channel ADC from Maxim Integrated.
These alternatives offer similar functionality in terms of resolution and channel count, but ensure to check specific requirements like pin compatibility, sampling rate, and power consumption before choosing a substitute.
Features
The ADS7844EB is designed with a serial interface that is compatible with SPI™ and QSPI™ protocols, facilitating easy integration with microcontrollers and digital signal processors. It includes a built-in track-and-hold amplifier, which ensures accurate conversion of rapidly changing signals.
With a maximum sampling rate of 200 kSPS, it is suitable for applications requiring moderate-speed data acquisition. The device also features low power-down modes to conserve energy when not in use. Its compact design makes it ideal for portable and battery-powered products, as well as for use in industrial and consumer electronics where space and power efficiency are critical.
Pinout
Here is a brief overview of its pin functions:
1. CH0-CH7 (Pins 1-8): These are the analog input channels. Depending on the configuration, they can be used as 8 single-ended or 4 differential input channels.
2. +VREF (Pin 9): Reference voltage input.
3. -VREF (Pin 10): Negative reference voltage input or ground reference.
4. +VCC (Pin 11): Positive supply voltage input.
5. GND (Pin 12): Ground.
6. DOUT (Pin 13): Serial data output.
7. DIN (Pin 14): Serial data input for configuration.
8. CS (Pin 15): Chip select for enabling data communication.
9. CLK (Pin 16): Serial clock input.
The ADS7844EB is suitable for applications like industrial process control and portable instrumentation where multiple input channels and precision are required.