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Name: ADS7844NB
Brand: Texas Instruments
SKU: ADS7844NB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Texas Instruments ADS7844NB

Part No.:: ADS7844NB

Manufacturer:: Texas Instruments

Package:: 20-SSOP (0.209, 5.30mm Width)

Datasheet:: ADS7844NB.pdf

Description:: IC ADC 12BIT SAR 20SSOP

In Stock:: 3591

Quantity:: Add To Cart

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ADS7844NB Specifications

Packaging:
Bulk,Tube
Series:
-
Product Status:
Active
Number of Bits:
12
Sampling Rate(PerSecond):
200k
Number of Inputs:
4, 8
Input Type:
Differential, Single Ended
Data Interface:
SPI
Configuration:
MUX-S/H-ADC
Ratio-S/H:ADC:
1:1
Number of A/D Converters:
1
Architecture:
SAR
Reference Type:
External
Voltage-Supply Analog:
2.7V ~ 3.6V, 5V
Voltage-Supply Digital:
2.7V ~ 3.6V, 5V
Features:
-
Operating Temperature:
-40°C ~ 85°C

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ADS7844NB information

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ADS7844NB Typical application Circuitry

ADS7844NB

The ADS7844NB is a 12-bit, 8-channel, Serial Interface Analog to Digital Converter (ADC) from Texas Instruments.Here's a fundamental guide on integrating the ADS7844NB into your circuit:

1. Power Connections: Connect VDD (pin 16) to your power supply, typically 2.7V to 5.25V, and VSS (pin 15) to your ground. A decoupling capacitor (typically 0.1 of) close to the device between VDD and VSS is recommended to filter out high-frequency noise.

2. Analog Inputs: There are eight analog input channels (AIN0 through AIN7 on pins 1 to 8 respectively). Depending on your application, connect the channels to the signals you want to convert to digital.

3. SPI Interface: The SPI interface involves three primary lines -D OUT (pin 11) for data output, DIN (pin 12) for data input, and SCLK (pin 13) for serial clock. Connect these to corresponding SPI pins of your microcontroller or another SPI master device.

4. Chip Select (CS): The CS (pin 14) is an active-low pin, which means that when it is pushed low, it turns the device on. Connect CS to a controllable digital output from your microcontroller.

5. CONVST (Start Conversion): This pin (pin 9) initiates conversion when pulled low and should be connected to another controllable digital output from your microcontroller.

6. BUSY: Pin 10 indicates when the ADC is working on a conversion. It can be connected to a digital input on your microcontroller to check if the conversion is complete.

7. Voltage Reference: REF (pin 17) sets the reference voltage for the conversion. Connect this pin to the desired reference voltage as per your application requirements.

Remember, always refer to the ADS7844NB data sheet for complete information and recommendations for optimal use in your specific application. This guide serves as a starting point, and actual implementation can vary based on the overall design requirements.

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6. What is the process for return or replacement of ADS7844NB?

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of ADS7844NB.

(3)The PartNo is unused and only in the original unpacked packaging.

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(1)Inform us within 90 days

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