回到顶部
产品详情
主要特征
应用/用途
Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) | 12 |
# Input Channels | 4 |
Conv. Rate (ksps) (max) | 250 |
Data Bus | µP/8 |
ADC Architecture | SAR |
Diff/S.E. Input | Both |
Internal VREF (V) (nominal) | 2.5 |
External VREF (V) (min) | 1 |
External VREF (V) (max) | 3.6 |
Unipolar VIN (V) (max) | 2.5 |
Bipolar VIN (±V) (max) | 1.25 |
INL (±LSB) | 1 |
Package/Pins | QSOP/24 |
Budgetary Price (See Notes) | 11.13 |
缩小
简化框图
Technical Docs
数据资料 | 250ksps、+3V、8/4通道、12位ADC,带有+2.5V电压基准及并行接口 | Mar 27, 2003 |
支持和培训
采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后,所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站,请创建一个新帐户。有关此样片网站的任何问题,请联系SampleSupport@analog.com。
参量
Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) | 12 |
# Input Channels | 4 |
Conv. Rate (ksps) (max) | 250 |
Data Bus | µP/8 |
ADC Architecture | SAR |
Diff/S.E. Input | Both |
Internal VREF (V) (nominal) | 2.5 |
External VREF (V) (min) | 1 |
External VREF (V) (max) | 3.6 |
Unipolar VIN (V) (max) | 2.5 |
Bipolar VIN (±V) (max) | 1.25 |
INL (±LSB) | 1 |
Package/Pins | QSOP/24 |
Budgetary Price (See Notes) | 11.13 |
主要特征
- 12-Bit Resolution, ±0.5 LSB Linearity
- +3V Single Operation
- User-Adjustable Logic Level (+1.8V to +3.6V)
- Internal +2.5V Reference
- Software-Configurable, Analog Input Multiplexer
- 8-Channel Single-Ended/4-Channel Pseudo-Differential (MAX1291)
- 4-Channel Single-Ended/2-Channel Pseudo-Differential (MAX1293)
- Software-Configurable, Unipolar/Bipolar Inputs
- Low Power:
- 1.9mA (250ksps)
- 1.0mA (100ksps)
- 400µA (10ksps)
- 2µA (Shutdown)
- Internal 3MHz Full-Power Bandwidth Track/Hold
- Byte-Wide Parallel (8 + 4) Interface
- Small Footprint:
- 28-Pin QSOP (MAX1291)
- 24-Pin QSOP (MAX1293)
应用/用途
- 数据采集系统
- 数据记录
- 能量管理
- 工业控制系统
- 病人监护
- 触摸屏
描述
The MAX1291/MAX1293 low-power, 12-bit analog-to-digital converters (ADCs) feature a successive-approximation ADC, automatic power-down, fast wake-up (2µs), an on-chip clock, +2.5V internal reference, and a high-speed, byte-wide parallel interface. They operate with a single +3V analog supply and feature a VLOGIC pin that allows them to interface directly with a +1.8V to +5.5V digital supply.
Power consumption is only 5.7mW (VDD = VLOGIC) at the maximum sampling rate of 250ksps. Two software-selectable power-down modes enable the MAX1291/MAX1293 to be shut down between conversions; accessing the parallel interface returns them to normal operation. Powering down between conversions can cut supply current to under 10µA at reduced sampling rates.
Both devices offer software-configurable analog inputs for unipolar/bipolar and single-ended/pseudo-differential operation. In single-ended mode, the MAX1291 has eight input channels and the MAX1293 has four input channels (four and two input channels, respectively, when in pseudo-differential mode).
Excellent dynamic performance and low power, combined with ease of use and small package size, make these converters ideal for battery-powered and data-acquisition applications or for other circuits with demanding power consumption and space requirements.
The MAX1291/MAX1293 tri-states active-low INT when active-low CS goes high. Refer to MAX1261/MAX1263 if tri-stating active-low INT is not desired.
The MAX1291 is available in a 28-pin QSOP package, while the MAX1293 is available in a 24-pin QSOP. For pin-compatible +5V, 12-bit versions, refer to the MAX1290/MAX1292 data sheet.
Power consumption is only 5.7mW (VDD = VLOGIC) at the maximum sampling rate of 250ksps. Two software-selectable power-down modes enable the MAX1291/MAX1293 to be shut down between conversions; accessing the parallel interface returns them to normal operation. Powering down between conversions can cut supply current to under 10µA at reduced sampling rates.
Both devices offer software-configurable analog inputs for unipolar/bipolar and single-ended/pseudo-differential operation. In single-ended mode, the MAX1291 has eight input channels and the MAX1293 has four input channels (four and two input channels, respectively, when in pseudo-differential mode).
Excellent dynamic performance and low power, combined with ease of use and small package size, make these converters ideal for battery-powered and data-acquisition applications or for other circuits with demanding power consumption and space requirements.
The MAX1291/MAX1293 tri-states active-low INT when active-low CS goes high. Refer to MAX1261/MAX1263 if tri-stating active-low INT is not desired.
The MAX1291 is available in a 28-pin QSOP package, while the MAX1293 is available in a 24-pin QSOP. For pin-compatible +5V, 12-bit versions, refer to the MAX1290/MAX1292 data sheet.
Technical Docs
数据资料 | 250ksps、+3V、8/4通道、12位ADC,带有+2.5V电压基准及并行接口 | Mar 27, 2003 |
支持和培训
采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后,所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站,请创建一个新帐户。有关此样片网站的任何问题,请联系SampleSupport@analog.com。