AD4130 family lineup

The AD4130 family includes the following lineup:

- AD4130: 24-bit/FIFO built-in

- AD4129: 16-bit/FIFO built-in

- AD4131: 16-bit/no FIFO

Each model number is available in both 4-channel (4 differential or 8 pseudo-differential) and 8-channel (8 differential or 16 pseudo-differential) versions.

Advantages of the AD4130 family

By adopting the AD4130 family, you can enjoy the following advantages:

■ Maximizing battery life
Supports low-voltage operation from 1.71 to 3.6V single power supply. It operates stably for extended periods even when using a single-cell battery or when the power supply voltage drops, maximizing battery life.

■ Noise reduction using a SINC filter
It features a built-in SINC filter to remove noise components from 50Hz/60Hz commercial power supplies. Flexible filter options and a wide output data rate range up to 2.4ksps allow for noise suppression tailored to the system's speed requirements.

■ Eliminate the accumulation of errors and reduce the number of parts.
Because peripheral functions are integrated, the "accumulation of errors" that occur when combining individual components is eliminated. This reduces the number of components, simultaneously achieving high-precision measurement, space saving on the circuit board, and cost reduction.

■ Early market entry through the reuse of design assets
By integrating diverse functions, the hardware remains common, while software control alone enables support for various circuit boards. Because a single design can be deployed across multiple product lines, development time is reduced, and new products can be brought to market more quickly.

AD4190 family lineup

The AD4190 family includes two types: "AD4190-4" and "AD4195-4".

•AD4190: Electrical characteristics are specified as typ(typical value).

• AD4195: Electrical characteristics are specified as min (minimum value) / max (maximum value).

Since the absolute value standard is defined on the device side, the AD4195 is recommended if you want to accurately determine the error.

Advantages of the AD4190 family

By adopting the AD4190 family, you can enjoy the following advantages:

■ Power supply voltage suitable for desktop measuring instruments, and gain settings starting from 0.5x.
Compatible with power supply voltages from 4.75V to 5.25V. Suitable for desktop measuring instruments with stable power supply. Low-noise PGA can be set from 0.5x to 128x. The magnification can be adjusted more precisely to match the input signal.

■ High-speed and high-precision measurement with a maximum output data rate of 62.5 ksps
Supports a wide output data rate range of 5 to 62.5 ksps. It is approximately 30 times faster than the AD4130 family, enabling more accurate measurements. The built-in SINC filter simultaneously removes 50Hz/60Hz noise originating from the commercial power supply.

Of course, you can also enjoy the benefits of signal chain integration, such as eliminating accumulated errors, reducing the number of parts, and reducing design man-hours by reusing design assets.

Comparison of key specifications between the AD4130/AD4190 family and previous models.

The following table compares the key specifications of the AD4130 and AD4190 families with those of previous models (AD7124 and AD4170). Since the previous generation AD7124 and the AD4130/AD4190 families are pin-compatible, you can consider replacing existing designs with these.

Smart Sequencer/Channel Sequencer (AD4130/AD4131)

Typically, multi-channel measurements require the host processor to send commands such as "ADC channel switching" and "gain setting" via SPI, which contributes to increased power consumption.

The AD4130's built-in smart sequencer allows you to pre-set measurement conditions for each channel (gain, filter, data rate, etc.) and automatically switch between up to 16 channels in a predetermined order. This reduces the need to rewrite settings via SPI each time a channel is switched, thus lowering the load on the host system. When combined with a FIFO, it can also be used for "autonomous measurement," such as putting the microcontroller into sleep mode for extended periods.

*Please refer to the following section for an overview of the channel sequencer function.

Channel sequencer (AD4190/AD4195)

The AD4190 family features an automatic channel sequencer function. This function organizes multi-channel measurements with per-channel settings and automatic sequencing. It supports a wide data rate of up to 62.5 ksps and TDM-compatible data streaming, making it ideal for efficiently managing low-noise channels.

Duty cycle mode (AD4130/AD4131)

The AD4130/AD4131 has a duty cycle mode. This mode is only active during A/D conversion, reducing the power consumption between conversions to a low-power state and lowering the average current consumption. You can select a ratio of 1/4 or 1/16, and as a typical example, while continuous conversion is 32​ ​μA (gain 128), a duty cycle ratio of 1/16 can reduce it to 5 μA.

By combining it with a smart sequencer or FIFO (256 samples), the communication and operating time of the microcontroller can be reduced, leading to lower power consumption as a system through autonomous operation of the measurement system.

FIFO function (AD4130)

The AD4130 features a built-in FIFO buffer, allowing for the continuous acquisition of up to 256 data points. During this time, the host processor can be put into sleep mode, resulting in overall system power savings. Flexible FIFO modes and sleep wake-up conditions allow for configuration according to specific requirements.

Diagnostic functions for robustness

Both the AD4130 and AD4190 are equipped with comprehensive diagnostic functions, providing strong support for robust system design.

Device error

• Reference detection

• Reference overvoltage / undervoltage

- Conversion error

- Excitation current compliance (AD4190-4/AD4195-4)

- Analog input overvoltage / undervoltage detection

Burnout current

• Power monitor

​LDO monitoring

​SPI interface

application

The AD4130 and AD4190 families are primarily used in the following applications:

AD4130 Family: Battery-powered portable measuring instruments requiring low power consumption.

AD4190 Family: High-precision measuring instruments such as thermometers, weighing scales, flow meters, and barometers.

This time, we introduced ADI 's integrated ΣΔAFE"AD4130" and "AD4190".

By integrating essential functions for maintaining accuracy onto a single chip, both families achieve both high measurement accuracy and simplified circuit design, making them ideal solutions for design environments with limited development resources and time.

You can try all of these immediately. Please feel free to contact us with any questions or concerns.

Click here to purchase products

• AD4130 Evaluation Board

Click here for manufacturer site/other related sites

• AD4190-4 (Various datasheets can be downloaded from here)
• AD4195-4 (Various datasheets can be downloaded from here)
• [AD7124 series] A/D converter that achieves low power consumption despite being a Σ-Δ type.
• Ideal for miniaturization and battery operation! The ADPD4100 is an analog front-end (AFE) for vital sign measurement.

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