NA2204
Analog Front End with High Precision 24-Bit A-D Converter
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Description
NA2202/2203/2204 are C-MOS based high precision AFE with up to 128 times internal PGA (Programmable Gain Amplifier). Internal 16/20/24-bit ΔΣ type Analog to Digital converter (ADC) can perform conversion rates from 3.125sps to 9.6ksps. NA2202/2203/2204 have error detection. (CRC8 or Check Sum.) It is useful for noise applications. It is also possible to turn off the CRC. NA2202/2203/2204 support bipolar operation of analog supply voltage, for example AVDD is set in +2.5V and AVSS is in -2.5V. A negative voltage input is possible such as thermocouple. Two matched excitation current sources supply the bias of pressure sensor, resistance temperature detectors, and so on. The matching error between two excitation current sources is less than 1% in 3-sigma. By using low power consumption mode, power consumption can be reduced to about 1/3 of normal operation. The conversion data rate in the low power consumption mode operates at 1/4 of the normal operation.
Design Tools
Applications
- Temperature Controller
- Pressure sensors
- Flowmeters
- PLC
- Digital Panel Mater
Related Products
Spec
| Standard | |
|---|---|
| Supply Voltage | 2.7V to 5.5V |
| Operating Current | Analog(Normal) 2.9mA Analog(Low Power) 0.9mA Digital 0.26mA |
| Speed | 3.125ksps to 9.6ksps(Continuous conversion) |
| Number of Pin | 24 |
| Interface | SPI |
| Structure | CMOS |
| Wide Operating Temperature | -40°C to +125°C |
| Junction Temp. | +150°C |
| Package | QFN4040-24-NB |
| ADC Resolution | 24-Bit (No missing codes) |
| Excitation Current Source | 2 systems(0.1mA, 0.25mA, 0.5mA, 1mA) |
| Input mode | Differential : 4 inputs / Single-ended : 8inputs / Pseudo-differential |
| Note | PGA 1V/V to 128V/V System Calibration for offset & gain drift Built-in Regulator 2.048V±20mV Conversion mode Single / Continuous CS (Chip Select) Error detection CRC8, Check Sum |
Technical Documents
Quality & Packages
| Product Name | Compatibility | Package | Marking | Reliability |
|---|---|---|---|---|
| NA2204NBAE2S |
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QFN4040-24-NB | See datasheet | - |
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- The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
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