Departments
Integrated CircuitsNeed Help
Home > Integrated Circuits > Special Function > Maxim Integrated
MAX191 12-Bit Sampling ADC Datasheet
Photograph
Product Details
The MAX191 is a 12-bit analog to digital converter with
differential inputs, fast track/hold, high conversion speed and a high-speed serial or parallel interface.
The MAX191 has a 100ksps sampling rate, with an acquisition time of 2µs.
The converter operates from a single +5V power supply or dual ±5V power supplies with power down mode which reduces the supply to
current to just 50µA.
Features
- 12-Bit Resolution, 1/2LSB Linearity
- Single +5V Operation
- Built-In Track/Hold
- Internal Reference with Adjustment Capability
- Low Power: 3mA Operating Mode 20µA Power-Down Mode
- 100ksps Tested Sampling Rate
- Serial and 8-Bit Parallel µP Interface
Pin Layout
Pin Description
| Pin Number | Description |
|---|---|
| 1 | Pd - Power Down Input |
| 2 | Vss - Negative Supply |
| 3 | Ain+ - Analog Input |
| 4 | Ain- - Analog Input |
| 5 | Vref - Reference Buffer Output |
| 6 | REFADJ - Reference Adjust |
| 7 | AGND - Analog Ground |
| 8 | BIP - Unipolar/Bipolar Select |
| 9 | BUSY - Busy Output |
| 10 | D0 - Data Output bit 0 |
| 11 | D1 - Data Output bit 1 |
| 12 | DGND - Digital Ground |
| 13 | D2 - Data Output bit 2 |
| 14 | D3 - Data Output bit 3 |
| 15 | D4 - Data Output bit 4 |
| 16 | D5 - Data Output bit 5 |
| 17 | D6 - Data Output bit 6 |
| 18 | D7 - Data Output bit 7 |
| 19 | RD - Read Input |
| 20 | CS - Chip Select |
| 21 | HBEN - High Byte Enable |
| 22 | PAR - Output Mode Select |
| 23 | CLK/SCLK - Clock Input |
| 24 | Vdd - Positive Supply |
Dimensional Drawing
Technical Data
