Overview
The MAX1247BCEE+T is a low-power, 4-channel, serial 12-bit analogue to digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device operates from a single supply voltage range of 2.7V to 5.25V and is housed in a 16-pin QSOP package. It utilizes a successive approximation conversion technique along with input track/hold (T/H) circuitry to convert analogue signals into 12-bit digital outputs. The MAX1247BCEE+T is designed for applications requiring high conversion speed and low power consumption, making it suitable for various industrial, medical, and portable device applications.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Sampling Rate | 133 kSPS |
| Number of Inputs | 4 (single-ended or 2 differential) |
| Input Type | Differential, Single Ended |
| Data Interface | SPI/QSPI/MICROWIRE/TMS320 compatible 4-wire serial interface |
| Supply Voltage Range | 2.7V to 5.25V |
| Operating Temperature Range | 0°C to 70°C |
| Supply Current | 1.8mA at VDD = 5.25V, 0.9mA at VDD = 3.6V (Operating mode, full-scale input) |
| Relative Accuracy | ±1LSB |
| Differential Nonlinearity | ±1LSB |
| Offset Error | ±0.5LSB |
| Total Harmonic Distortion | -88dB |
| Small-Signal Bandwidth | 2.25MHz at -3dB roll-off |
| Reference Buffer Gain | 2V/V |
| Maximum Conversion Time | 7.5µs at internal clock |
Key Features
- Software-configurable unipolar or bipolar inputs and single-ended or differential operation.
- Flexible serial interface compatible with SPI/QSPI/MICROWIRE/TMS320 devices.
- Hard-wired SHDN (complementary) pin and software-selectable power-down mode.
- Automatic shutdown at the end of a conversion to reduce power consumption.
- External reference required with a reference buffer amplifier having a ±1.5% voltage-adjustment range.
- Low power consumption with supply current as low as 0.9mA at VDD = 3.6V.
- Quick turn-on time allowing shutdown between conversions to further reduce supply current.
Applications
- Signal Processing
- Industrial Automation and Control
- Portable Devices
- Medical Devices
- Data Acquisition Systems
- Pen Digitizers
Q & A
- What is the supply voltage range of the MAX1247BCEE+T?
The supply voltage range is from 2.7V to 5.25V.
- How many input channels does the MAX1247BCEE+T have?
The device has 4 single-ended or 2 differential input channels.
- What type of serial interface does the MAX1247BCEE+T use?
The device uses an SPI/QSPI/MICROWIRE/TMS320 compatible 4-wire serial interface.
- What is the maximum conversion time of the MAX1247BCEE+T?
The maximum conversion time is 7.5µs at the internal clock.
- Does the MAX1247BCEE+T have an internal reference voltage?
No, the MAX1247BCEE+T requires an external reference voltage.
- What is the operating temperature range of the MAX1247BCEE+T?
The operating temperature range is from 0°C to 70°C.
- How does the power-down feature work on the MAX1247BCEE+T?
The device can be programmed to automatically shut down at the end of a conversion, and it also has a hard-wired SHDN (complementary) pin and software-selectable power-down mode.
- What is the total harmonic distortion of the MAX1247BCEE+T?
The total harmonic distortion is -88dB.
- What is the small-signal bandwidth of the MAX1247BCEE+T?
The small-signal bandwidth is 2.25MHz at -3dB roll-off.
- What are some common applications of the MAX1247BCEE+T?
Common applications include signal processing, industrial automation, portable devices, medical devices, and data acquisition systems.
