TLE2425
- 2.5-V Virtual Ground for 5-V/GND Analog Systems
- High Output-Current Capability Sink or Source . . . 20 mA Typ
- Micropower Operation . . . 170 uA Typ
- Excellent Regulation Characteristics
- Output Regulation
–45 uV Typ at IO = 0 to –10 mA
+15 uV Typ at IO = 0 to +10 mA - Input Regulation = 1.5 uV/V Typ
- Output Regulation
- Low-Impedance Output . . . 0.0075 Typ
- Macromodel Included
In signal-conditioning applications using a single power source, a reference voltage is required for termination of all signal grounds. To accomplish this, engineers have typically used solutions consisting of resistors, capacitors, operational amplifiers, and voltage references. Texas Instruments has eliminated all of those components with one easy-to-use 3-terminal device. That device is the TLE2425 precision virtual ground.
Use of the TLE2425 over other typical circuit solutions gives the designer increased dynamic signal range, improved signal-to-noise ratio, lower distortion, improved signal accuracy, and easier interfacing to ADCs and DACs. These benefits are the result of combining a precision micropower voltage reference and a high-performance precision operational amplifier in a single silicon chip. It is the precision and performance of these two circuit functions together that yield such dramatic system-level performance.
The TLE2425 improves input regulation as well as output regulation and, in addition, reduces output impedance and power dissipation in a majority of virtual-ground-generation circuits. Both input regulation and load regulation exceed 12 bits of accuracy on a single 5-V system. Signal-conditioning front ends of data acquisition systems that push 12 bits and beyond can use the TLE2425 to eliminate a major source of system error.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | Precision Virtual Grounds datasheet (Rev. D) | 2002年 4月 30日 | |
Application note | Using References to Generate Offsets for the TLC55xx Family Data Converters (Rev. A) | 2002年 7月 29日 | ||
Application note | Choosing an ADC and Op Amp for Minimum Offset | 1999年 10月 28日 |
設計與開發
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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
TINA-TI — 基於 SPICE 的類比模擬程式
封裝 | 引腳 | 下載 |
---|---|---|
SOIC (D) | 8 | 檢視選項 |
SOP (PS) | 8 | 檢視選項 |
TO-92 (LP) | 3 | 檢視選項 |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點