概述
The MAX110/MAX111 analog-to-digital converters (ADCs) use an internal auto-calibration technique to achieve 14-bit resolution plus overrange, with no external components. Operating supply current is only 550µA (MAX110) and reduces to 4µA in power-down mode, making these ADCs ideal for high-resolution battery-powered or remote-sensing applications. A fast serial interface simplifies signal routing and opto-isolation, saves microcontroller pins, and offers compatibility with SPI™, QSPI™, and MICROWIRE™. The MAX110 operates with ±5V supplies, and converts differential analog signals in the -3V to +3V range. The MAX111 operates with a single +5V supply and converts differential analog signals in the ±1.5V range, or single-ended signals in the 0V to +1.5V range.
Internal calibration allows for both offset and gain-error correction under microprocessor (µP) control. Both devices are available in space-saving 16-pin DIP and SO packages, as well as an even smaller 20-pin SSOP package.
| 关键特性 |
|
应用 |
- Single +5V Supply (MAX111)
- Two Differential Input Channels
- 14-Bit Resolution Plus Sign and Overrange
- 0.03% Linearity (MAX110)
- 0.05% Linearity (MAX111)
- Low Power Consumption:
- 550µA (MAX110)
- 640µA (MAX111)
- 4µA Shutdown Current
- Up to 50 Conversions/sec
- 50Hz/60Hz Rejection
- Auto-Calibration Mode
- No External Components Required
- 16-Pin DIP/SO, 20-Pin SSOP
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| Key Specifications: Sigma-Delta ADCs |
| Part Number |
Resolution (Bits) |
Max. DNL (LSB) |
Max. INL (±%FSR) |
Conversion Rate (sps) |
Max. Conversion Time (µs) |
Typ. Supply Current (mA) |
Standby Mode |
Ref. (V) |
Input Range (V) |
Special Features |
Supply Voltage (V) |
Data Bus Interface |
EV-Kit |
Input Channels |
Package |
Operating Temp. Range (°C) |
RoHS Available |
Price |
| MAX110 |
14 |
2 |
0.03 |
50 |
20480 |
0.55 |
Yes |
Ext |
±3 |
Differential Inputs Bipolar |
-5
5 |
Serial |
Yes |
2 |
20/SSOP
16/PDIP
16/SOIC |
0 to +70 -40 to +85 -55 to +125 |
Yes |
$4.80 @ 1k |
| MAX111 |
0.05 |
0.64 |
±1.5
1.5 |
Differential Inputs Unipolar/Bipolar |
5 |
20/SSOP
16/PDIP
16/SOIC |
$4.80 @ 1k |
| 图表 |
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