Overview
The ADCS7478AIMFX/NOPB is a low-power, monolithic CMOS 8-bit analog-to-digital converter (ADC) produced by Texas Instruments. It operates at a conversion rate of 1 MSPS and is part of the ADCS747x family, which also includes 12-bit and 10-bit versions. These devices are designed as drop-in replacements for Analog Devices' AD747x series. The ADCS7478 uses a successive approximation register architecture with an internal track-and-hold circuit, and its serial interface is compatible with SPI, QSPI, MICROWIRE, and many common DSP serial interfaces. The device is packaged in a 6-pin SOT-23 package, making it suitable for applications where space is critical.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 8-bit (with no missing codes) |
| Conversion Rate | 1 MSPS |
| Differential Non-Linearity (DNL) | 0.5, 0.3 LSB (Typical) |
| Integral Non-Linearity (INL) | ±0.4 LSB (Typical) |
| Power Supply Range | 2.7 V to 5.25 V |
| Power Consumption (3-V Supply) | 2 mW (Typical) |
| Power Consumption (5-V Supply) | 10 mW (Typical) |
| Operating Temperature Range | -40°C to 125°C |
| Package Type | 6-pin SOT-23 (DBV) |
Key Features
- Variable Power Management
- Packaged in 6-pin SOT-23 for a small footprint
- Power Supply Used as Reference, enabling a full-scale input range of 0 to VDD
- Single 2.7-V to 5.25-V Supply Operation
- Compatible with SPI, QSPI, MICROWIRE, and many common DSP serial interfaces
- Shutdown mode to reduce power consumption to under 5 µW using a 5-V supply
Applications
- Automotive Navigation
- FA or ATM Equipment
- Portable Systems
- Medical Instruments
- Mobile Communications
- Instrumentation and Control Systems
Q & A
- What is the conversion rate of the ADCS7478?
The conversion rate of the ADCS7478 is 1 MSPS.
- What is the resolution of the ADCS7478?
The ADCS7478 has an 8-bit resolution with no missing codes.
- What is the power consumption of the ADCS7478 at 3-V and 5-V supplies?
The power consumption is 2 mW at a 3-V supply and 10 mW at a 5-V supply.
- What is the operating temperature range of the ADCS7478?
The operating temperature range is -40°C to 125°C.
- What package type is the ADCS7478 available in?
The ADCS7478 is available in a 6-pin SOT-23 (DBV) package.
- Is the ADCS7478 compatible with various serial interfaces?
Yes, it is compatible with SPI, QSPI, MICROWIRE, and many common DSP serial interfaces.
- How does the power-down feature work on the ADCS7478?
The power-down feature, enabled by the chip select (CS) pin, reduces power consumption to under 5 µW using a 5-V supply.
- What is the input range for the analog input of the ADCS7478?
The input range is from 0 V to VDD.
- What are some typical applications of the ADCS7478?
Typical applications include automotive navigation, FA or ATM equipment, portable systems, medical instruments, mobile communications, and instrumentation and control systems.
- Can the ADCS7478 be used as a drop-in replacement for other ADCs?
Yes, the ADCS7478 is designed as a drop-in replacement for Analog Devices' AD747x series.
