Applications with only a positive supply voltage often require additional stable voltage in the middle of the analog-to-digital converter (ADC) input range to bias input bipolar signals. The REF20xx-Q1 provides a reference voltage (V_REF) for the ADC and a second highly-accurate voltage (V_BIAS) that can be used to bias the input bipolar signals.

The REF20xx-Q1 offers excellent temperature drift (8 ppm/°C, maximum) and initial accuracy (0.05%) on both the V_REF and V_BIAS outputs while operating at a quiescent current less than 430 µA. In addition, the V_REF and V_BIAS outputs track each other with a precision of 7 ppm/°C (maximum) across the temperature range of –40°C to 125°C. All these features increase the precision of the signal chain and decrease board space, while reducing the cost of the system as compared to a discrete solution. Extremely low dropout voltage of only 10 mV allows operation from very low input voltages, which can be very useful in battery-operated systems.

Both the V_REF and V_BIAS voltages have the same excellent specifications and can sink and source current equally well. Very good long-term stability and low noise levels make these devices ideally-suited for high-precision applications.

• AEC-Q100 qualified with the following results:
  • Device temperature grade 1: 40°C to +125°C ambient operating temperature
  • Device HBM ESD classification level 2
  • Device CDM ESD classification level C7B
• Functional Safety-Capable
  • Documentation available to aid functional safety system design
• Two Outputs, VREF and VREF / 2, for convenient use in single-supply systems
• Excellent temperature drift performance:
  • 8 ppm/°C (maximum) from 40°C to 125°C
• High initial accuracy: ±0.05% (maximum)
• VREF and VBIAS tracking overtemperature:
  • 7 ppm/°C (maximum) from 40°C to 125°C
• Microsize package: SOT23-5
• Low dropout voltage: 10 mV
• High output current: ±20 mA
• Low quiescent current: 360 A
• Line regulation: 3 ppm/V
• Load regulation: 8 ppm/mA

• VO (V)
• 2.5, 1.25, 3.0, 1.5, 3.3, 1.65, 4.096, 2.048
• Initial accuracy (Max) (%)
• 0.05
• Temp coeff (Max) (ppm/ degree C)
• 8
• Vin (Min) (V)
• 2.52
• Vin (Max) (V)
• 5.5
• Iq (Typ) (uA)
• 360
• Rating
• Automotive
• TI functional safety category
• Functional Safety-Capable
• Features
• Multiple outputs, Enable pin
• Iout/Iz (Max) (mA)
• 20
• Shutdown current (ISD) (Typ) (uA)
• 3.3

REF20-Q1的完整型号有：REF2025QDDCRQ1、REF2030QDDCRQ1、REF2033QDDCRQ1、REF2041QDDCRQ1，以下是这些产品的关键参数及官网采购报价：

REF2025QDDCRQ1，工作温度：-40 to 125，封装：SOT-23-THIN (DDC)-5，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网REF2025QDDCRQ1的批量USD价格：2.104（1000+）

REF2030QDDCRQ1，工作温度：-40 to 125，封装：SOT-23-THIN (DDC)-5，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网REF2030QDDCRQ1的批量USD价格：2.104（1000+）

REF2033QDDCRQ1，工作温度：-40 to 125，封装：SOT-23-THIN (DDC)-5，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网REF2033QDDCRQ1的批量USD价格：2.104（1000+）

REF2041QDDCRQ1，工作温度：-40 to 125，封装：SOT-23-THIN (DDC)-5，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网REF2041QDDCRQ1的批量USD价格：2.104（1000+）

REF2041 PSpice Model

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。

在PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)