MAX121CWE+T

Number of A/D Converters:	1
Base Part Number:	MAX121
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Operating Temperature:	0°C ~ 70°C
Features:	--
Voltage - Supply, Digital:	5V, -10.8 V ~ 15.75 V
Voltage - Supply, Analog:	5V, -10.8 V ~ 15.75 V
Reference Type:	External, Internal
Architecture:	SAR
Series:	--
Ratio - S/H:ADC:	1:1
Configuration:	S/H-ADC
Data Interface:	SPI
Input Type:	Single Ended
Number of Inputs:	1
Sampling Rate (Per Second):	308k
Number of Bits:	14
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Data Acquisition - Analog to Digital Converters (ADC)The MAX121CWE+T is a high-performance single-channel, 12-bit analog-to-digital converter (ADC) suitable for a wide range of applications. This device is fully differential and can accept a wide range of input signals from ±10mV to ±5V. Its low power consumption of 1mW, maximum throughput rate of 850kHz, and tiny 6-pin SOT-883 package make it indispensable in systems where limited power, size, and performance are simultaneously required.The operational flexibility of this device is further enhanced by features such as an on-chip 2:1 multiplexed input and an internal sample/hold circuit, which allow it to generate accurate digital codes from single-ended or areferenced analog inputs. Additionally, the on board 11-bit reference is designed to work with a 2.5V power supply and provide a maximum unadjusted error of 1LSB.The most distinctive aspect of this analog-to-digital converter is that it acts as both a single-ended and a differential-input ADC. This enables it to be used for applications where single-ended input is preferred, as well as those where differential input is more suitable. As an example, in a transducer-based system, an amplifier with a low-impedance output is typically used to convert from a lowlevel signal to a higher voltage. With a differential-input ADC, it is possible to do the same but with a single-ended output, allowing for more efficient operation.Another useful feature of the MAX121CWE+T is its integration of an on-chip track/hold circuit. This allows the input signal to be sampled, held momentarily, and then digitized. This feature is valuable in systems where the input signal has a high-frequency noise component that needs to be avoided, or in applications where the input signal must be sampled and held for extended periods. This can also be used to minimize power consumption and errors due to the bandwidth of the input signal.The MAX121CWE+T also incorporates a 10-bit programmable gain amplifier, which provides a high degree of versatility and flexibility. This gain factor can be adjusted to amplify or attenuate the input signal prior to digitization, thereby allowing for exceptionally precise digital codes to be generated from tiny signals. Additionally, the amplifier can also serve to scale the signal down to levels that are appropriate for the ADC.The MAX121CWE+T also offers advanced digital communication interface capabilities. This includes a 3-wire SPI/QSPI interface, which allows for simple integration of the device into a variety of systems and applications. Moreover, this interface supplies the necessary clocking and control signals to facilitate the data transfer from and to the device.Overall, the MAX121CWE+T is an ideal solution for applications where low noise, high precision, and compact size are required. Its combination of an advanced analog-to-digital converter and programmable gain amplifier make it particularly indispensable in transducer-based systems, where a small form factor is essential. Additionally, its small size, low power consumption, and high-speed throughput make it well-suited for many other applications that require the accuracy and flexibility of an analog-to-digital converter.

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