Overview
The MAX145BCPA+ is a low-power, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is available in an 8-pin μMAX® and DIP package, making it suitable for applications where space and power efficiency are critical. The MAX145 operates with a single supply voltage ranging from +2.7V to +5.25V and features a successive-approximation ADC with a high-speed, 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12-bit |
| Supply Voltage | +2.7V to +5.25V |
| Sampling Rate | Up to 108ksps |
| Power Consumption | 3.2mW (VDD = +3.6V, 108ksps) 100µA (10ksps, +3V Supply) 10µA (1ksps, +3V Supply) 0.2µA (Power-Down Mode) |
| Input Type | Pseudo-differential |
| Package Type | 8-pin μMAX®, DIP |
| Interface | SPI, QSPI, MICROWIRE-compatible 3-wire serial interface |
| Internal Components | Internal track/hold, capacitive DAC |
Key Features
- Low power consumption with automatic power-down and fast wake-up (2.5µs)
- High-speed, 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols
- Internal track/hold and capacitive DAC for precise analog-to-digital conversion
- Single-supply operation (+2.7V to +5.25V)
- Pseudo-differential input capability
- Space-saving 8-pin μMAX and DIP packages
Applications
The MAX145BCPA+ is ideal for battery-powered devices, data-acquisition systems, and other applications where low power consumption and compact design are essential. It is particularly suited for use in portable medical devices, industrial control systems, and any circuit requiring high dynamic performance and minimal power usage.
Q & A
- What is the resolution of the MAX145BCPA+ ADC?
The MAX145BCPA+ has a 12-bit resolution. - What is the supply voltage range for the MAX145BCPA+?
The supply voltage range is +2.7V to +5.25V. - What is the maximum sampling rate of the MAX145BCPA+?
The maximum sampling rate is up to 108ksps. - What type of input does the MAX145BCPA+ accept?
The MAX145BCPA+ accepts pseudo-differential inputs. - What is the power consumption of the MAX145BCPA+ at maximum sampling rate?
The power consumption is 3.2mW at VDD = +3.6V and 108ksps. - Does the MAX145BCPA+ have an internal clock?
Yes, the MAX145BCPA+ has an on-chip clock. - What is the wake-up time from power-down mode?
The wake-up time is 2.5µs. - Is the MAX145BCPA+ compatible with any specific serial interfaces?
Yes, it is compatible with SPI, QSPI, and MICROWIRE protocols. - What are the package options for the MAX145BCPA+?
The package options are 8-pin μMAX and DIP. - What are some typical applications for the MAX145BCPA+?
Typical applications include battery-powered devices, data-acquisition systems, portable medical devices, and industrial control systems.
