概述
The MAX6190–MAX6195/MAX6198 precision, micro-power, low-dropout voltage references offer high initial accuracy and very low temperature coefficient through a proprietary curvature-correction circuit and laser-trimmed precision thin-film resistors.
These series-mode bandgap references draw a maximum of only 35µA quiescent supply current, making them ideal for battery-powered instruments. They offer a supply current that is virtually immune to input voltage variations. Load-regulation specifications are guaranteed for source and sink currents up to 500µA. These devices are internally compensated, making them ideal for applications that require fast settling, and are stable with capacitive loads up to 2.2nF.
关键特性
±2mV （max） Initial Accuracy
5ppm/°C （max） Temperature Coefficient
35µA （max） Supply Current
100mV Dropout at 500µA Load Current
0.12µV/µA Load Regulation
8µV/V Line Regulation
应用
A/D与D/A转换器
手持式仪表（PDA、掌上电脑）
硬盘驱动器
工业过程控制
精密3V/5V系统
MAX6190、MAX6191、MAX6192、MAX6193、MAX6194、MAX6195、MAX6198:典型工作电路
关键参数
| Part Number | VOUT (V) | Temp. Coeff. (ppm/°C) | Initial Accuracy (% max) | ISUPPLY (µA) | VSUPPLY (V) | VSUPPLY (V) | Noise 0.1Hz to 10Hz (µVpp) | Oper. Temp. (°C) | Budgetary Price |
| max | @ +25°C | max | min | max | typ | See Notes | |||
| MAX6190A | 1.25 | 5 | 0.16 | 35 | 2.5 | 12.6 | 25 | -40 to +85 | $2.96 @1k |
| MAX6190B | 1.25 | 10 | 0.32 | 2.5 | 25 | $2.00 @1k | |||
| MAX6190C | 1.25 | 25 | 0.48 | 2.5 | 25 | $2.09 @1k | |||
| MAX6191A | 2.048 | 5 | 0.1 | 2.5 | 40 | $2.96 @1k | |||
| MAX6191B | 2.048 | 10 | 0.244 | 2.5 | 40 | $2.59 @1k | |||
| MAX6191C | 2.048 | 25 | 0.5 | 2.5 | 40 | $1.52 @1k | |||
| MAX6192A | 2.5 | 5 | 0.08 | 2.7 | 60 | $2.96 @1k | |||
| MAX6192B | 2.5 | 10 | 0.2 | 2.7 | 60 | $2.59 @1k | |||
| MAX6192C | 2.5 | 25 | 0.4 | 2.7 | 60 | $2.09 @1k | |||
| MAX6193A | 3 | 5 | 0.066 | 3.2 | 75 | $2.50 @1k | |||
| MAX6193B | 3 | 10 | 0.166 | 3.2 | 75 | $2.00 @1k | |||
| MAX6193C | 3 | 25 | 0.333 | 3.2 | 75 | $2.09 @1k | |||
| MAX6194A | 4.5 | 5 | 0.04 | 4.7 | 110 | $2.50 @1k | |||
| MAX6194B | 4.5 | 10 | 0.11 | 4.7 | 110 | $2.00 @1k | |||
| MAX6194C | 4.5 | 25 | 0.22 | 4.7 | 110 | $2.09 @1k | |||
| MAX6195A | 5 | 5 | 0.04 | 5.2 | 120 | $2.96 @1k | |||
| MAX6195B | 5 | 10 | 0.1 | 5.2 | 120 | $2.00 @1k | |||
| MAX6195C | 5 | 25 | 0.2 | 5.2 | 120 | $2.09 @1k | |||
| MAX6198A | 4.096 | 5 | 0.05 | 4.3 | 100 | $2.96 @1k | |||
| MAX6198B | 4.096 | 10 | 0.12 | 4.3 | 100 | $2.59 @1k | |||
| MAX6198C | 4.096 | 25 | 0.24 | 4.3 | 100 | $1.45 @1k |
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