Overview
The MAX1203BCAP+T is a 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This component is part of the MAX1202/MAX1203 family, designed for use in applications with mixed +5V (analog) and +3V (digital) supply voltages. It combines an 8-channel multiplexer, high-bandwidth track/hold, and a serial interface, making it suitable for various data-acquisition systems.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Resolution | 12 | Bits | |||
| Conversion Time | Internal clock | 5.5 | 10 | µs | |
| Conversion Time | External clock, 2MHz, 12 clocks/conversion | 6 | µs | ||
| Track/Hold Acquisition Time | 1.5 | µs | |||
| Aperture Delay | 10 | ns | |||
| Aperture Jitter | < 50 | ps | |||
| Internal Clock Frequency | 1.7 | MHz | |||
| External Clock Frequency Range | 0.1 | 2.0 | MHz | ||
| Supply Voltage (Analog) | +5V ±5% | V | |||
| Supply Voltage (Digital) | 2.7V to 3.6V | V | |||
| Power Consumption (Operating Mode) | 1.5 | mA | |||
| Power Consumption (Power-Down Mode) | 2 | µA |
Key Features
- 8-channel multiplexer with high-bandwidth track/hold circuitry.
- 12-bit resolution with successive approximation analog-to-digital conversion.
- Operates with a single +5V analog supply or dual ±5V analog supplies.
- Serial interface compatible with SPI/MICROWIRE/TMS320-family digital signal processors.
- Internal clock or external serial-interface clock options.
- No internal reference; requires an external reference voltage (e.g., 4.096V).
- Reference-buffer amplifier for simplified gain trim.
- Software-configurable unipolar/bipolar inputs.
- Low power consumption: 1.5mA in operating mode and 2µA in power-down mode.
Applications
- Data-acquisition systems in industrial, medical, and automotive applications.
- Embedded systems requiring mixed +5V and +3V supply voltages.
- Systems needing high-speed, low-power ADCs with serial interface capabilities.
- Applications requiring direct connection to SPI/MICROWIRE/TMS320-family digital signal processors.
Q & A
- What is the resolution of the MAX1203BCAP+T ADC?
The MAX1203BCAP+T has a 12-bit resolution.
- What are the supply voltage requirements for the MAX1203BCAP+T?
The MAX1203BCAP+T operates with a single +5V analog supply or dual ±5V analog supplies, and the digital supply voltage ranges from 2.7V to 3.6V.
- What is the conversion time of the MAX1203BCAP+T?
The conversion time is 5.5µs with the internal clock and 6µs with an external 2MHz clock.
- Does the MAX1203BCAP+T have an internal reference voltage?
No, the MAX1203BCAP+T requires an external reference voltage.
- What is the power consumption of the MAX1203BCAP+T in operating and power-down modes?
The power consumption is 1.5mA in operating mode and 2µA in power-down mode.
- Is the MAX1203BCAP+T compatible with SPI and MICROWIRE interfaces?
Yes, it is compatible with SPI/MICROWIRE/TMS320-family digital signal processors.
- What is the track/hold acquisition time of the MAX1203BCAP+T?
The track/hold acquisition time is 1.5µs.
- Can the MAX1203BCAP+T be used in applications requiring bipolar inputs?
Yes, the MAX1203BCAP+T supports software-configurable unipolar/bipolar inputs.
- What is the maximum frequency of the external clock for the MAX1203BCAP+T?
The maximum frequency of the external clock is 2MHz.
- What package types are available for the MAX1203BCAP+T?
The MAX1203BCAP+T is available in a 20-pin SSOP package.
