MAX6126A21+【PDF 1/18 页】IC VREF SERIES PREC 2.048V 8UMAX

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MAX6126

Ultra-High-Precision, Ultra-Low-Noise,

Series Voltage Reference

General Description

The MAX6126 is an ultra-low-noise, high-precision, low-

dropout voltage reference. This family of voltage refer-

ences feature curvature-correction circuitry and

high-stability, laser-trimmed, thin-film resistors that

result in 3ppm/°C (max) temperature coefficients and

an excellent ±0.02% (max) initial accuracy. The propri-

etary low-noise reference architecture produces a low

flicker noise of 1.3μV P-P and wideband noise as low as

60nV/ √ Hz (2.048V output) without the increased supply

current usually found in low-noise references. Improve

wideband noise to 35nV/ √ Hz and AC power-supply

rejection by adding a 0.1μF capacitor at the noise

reduction pin. The MAX6126 series mode reference

operates from a wide 2.7V to 12.6V supply voltage

range and load-regulation specifications are guaran-

teed to be less than 0.025 ? for sink and source cur-

rents up to 10mA. These devices are available over the

automotive temperature range of -40°C to +125°C.

The MAX6126 typically draws 380μA of supply current

and is available in 2.048V, 2.500V, 2.800V, 3.000V,

4.096V, and 5.000V output voltages. These devices

also feature dropout voltages as low as 200mV. Unlike

conventional shunt-mode (two-terminal) references that

waste supply current and require an external resistor,

the MAX6126 offers supply current that is virtually inde-

Features

o Ultra-Low 1.3 μ V P-P Noise (0.1Hz to 10Hz, 2.048V

Output)

o Ultra-Low 3ppm/°C (max) Temperature Coefficient

o ±0.02% (max) Initial Accuracy

o Wide (V OUT + 200mV) to 12.6V Supply Voltage

Range

o Low 200mV (max) Dropout Voltage

o 380 μ A Quiescent Supply Current

o 10mA Sink/Source-Current Capability

o Stable with C LOAD = 0.1 μ F to 10 μ F

o Low 20ppm/1000hr Long-Term Stability

o 0.025 ? (max) Load Regulation

o 20 μ V/V (max) Line Regulation

o Force and Sense Outputs for Remote Sensing

Pin Configuration

pendent of supply voltage and does not require an

external resistor. The MAX6126 is stable with 0.1μF to

10μF of load capacitance.

TOP VIEW

I.C.*

The MAX6126 is available in the tiny 8-pin μMAX ? , as

well as 8-pin SO packages.

Applications

GND

MAX6126

OUTF

OUTS

High-Resolution A/D and D/A Converters

GNDS 4

I.C.*

ATE Equipment

High-Accuracy Reference Standard

Precision Current Sources

Digital Voltmeters

High-Accuracy Industrial and Process Control

μMAX is a registered trademark of Maxim Integrated Products, Inc.

SO/ μ MAX

*I.C. = INTERNALLY CONNECTED. DO NOT USE.

Ordering Information

PART

MAX6126AASA21+

MAX6126BASA21+

MAX6126A21+

TEMP RANGE

-40 ° C to +125 ° C

PIN-

PACKAGE

8 SO

8 μMAX

OUTPUT

VOLTAGE

(V)

2.048

MAXIMUM INITIAL

ACCURACY (%)

0.02

0.06

MAXIMUM TEMPCO

(-40°C to +85°C)

(ppm/°C)

Ordering Information continued at end of data sheet.

+Denotes a lead(Pb)-free/RoHS-compliant package.

For pricing, delivery, and ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

19-2647; Rev 6; 8/12

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MAX6126A21+T 功能描述:基准电压& 基准电流 Ultra-High-Precision Ultra-Low-Noise RoHS:否制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel

MAX6126A21-T 功能描述:基准电压& 基准电流 RoHS:否制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel

MAX6126A25 功能描述:基准电压& 基准电流 RoHS:否制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel

MAX6126A25+ 功能描述:基准电压& 基准电流 Ultra-High-Precision Ultra-Low-Noise RoHS:否制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel

MAX6126A25+T 功能描述:基准电压& 基准电流 Ultra-High-Precision Ultra-Low-Noise RoHS:否制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel

MAX6126A25-T 功能描述:基准电压& 基准电流 RoHS:否制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel

MAX6126A28+ 功能描述:基准电压& 基准电流 Ultra-High-Precision Ultra-Low-Noise RoHS:否制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel

MAX6126A28+T 功能描述:基准电压& 基准电流 Ultra-High-Precision Ultra-Low-Noise RoHS:否制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel

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