BUF12840 12 通道伽玛缓冲器，带两个存储器组
The BUF12840 offers 12 programmable gamma channels with external electrically erasable programmable read-only memory (EEPROM) read capabilities.
The BUF12840 has two separate memory banks that allow simultaneous storage of two different gamma curves to facilitate switching between gamma curves.
All gamma channels offer a rail-to-rail output that typically swings to within 200mV of either supply rail with a 5mA load. All channels are programmed using a two-wire interface that supports standard operations up to 400kHz and high-speed data transfers up to 3.4MHz.
The BUF12840 is manufactured using Texas Instruments’ proprietary, state-of-the-art, high-voltage CMOS process. This process offers very dense logic and high supply voltage operation of up to 20V.
| BUF12840 | |
| # Gamma Buffers | 12 |
| Vs(Min)(V) | 9 |
| Vs(Max)(V) | 20 |
| Iq per channel(Typ)(mA) | 1.08 |
| Gamma-Output Current(Typ)(mA) | 10 |
| Operating Temperature Range(C) | -40 to 95 |
| Pin/Package | 24VQFN |
| Number of Channels | 12 |
BUF12840 特性
- 10-BIT RESOLUTION
- 12-CHANNEL P-GAMMA
- READS FROM EXTERNAL EEPROM
- TWO INDEPENDENT PIN-SELECTABLE MEMORY BANKS
- RAIL-TO-RAIL OUTPUT:
- 300mV Min Swing-to-Rail (10mA)
- 200mV Min Swing-to-Rail (5mA)
- LOW SUPPLY CURRENT
- SUPPLY VOLTAGE: 9V to 20V
- DIGITAL SUPPLY: 2V to 5.5V
- TWO-WIRE INTERFACE: Supports 400kHz and 3.4MHz Operation
BUF12840 芯片订购指南
| 器件 | 状态 | 温度 | 价格（美元） | 封装 | 引脚 | 封装数量 | 封装载体 | 丝印标记 |
| BUF12840AIRGER | ACTIVE | -40 to 95 | 2.10 | 1ku | VQFN (RGE) | 24 | 3000 | LARGE T&R | |
| BUF12840AIRGET | ACTIVE | -40 to 95 | 2.45 | 1ku | VQFN (RGE) | 24 | 250 | LARGE T&R |
BUF12840 质量与无铅数据
| 器件 | 环保计划* | 铅/焊球涂层 | MSL 等级/回流焊峰 | 环保信息与无铅 (Pb-free) | DPPM / MTBF / FIT 率 |
| BUF12840AIRGER | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-3-260C-168 HR | BUF12840AIRGER | BUF12840AIRGER |
| BUF12840AIRGET | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-3-260C-168 HR | BUF12840AIRGET | BUF12840AIRGET |
BUF12840 应用技术支持与电子电路设计开发资源下载
- BUF12840 数据资料 dataSheet 下载.PDF
- TI 德州仪器仪运算放大器 (Op Amp)产品选型与价格 . xls
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
- 在 PSPICE 中使用德州仪器 (TI) SPICE 模型 (zhca088.HTM, 8 KB)
- PowerPADTM Thermally Enhanced Package (slma002g.HTM, 8 KB)
- 运算放大器的单电源操作 (PDF 2174 KB)
- Tuning in Amplifiers (PDF 44 KB)
- Op Amp Performance Analysis (PDF 76 KB)
- An Error Analysis of the ISO102 in a Small Signal Measuring Application (PDF 29 KB)
- Level Shifting Signals with Differential Amplifiers (PDF 23 KB)
- Operational Amplifier Macromodels: A Comparison (PDF 59 KB)
BUF12840 工具与软件
| 名称 | 型号 | 工具/软件类型 |
| 音频的快速搜索选择工具 | AUDIO_SELECTION_TOOL | 免费评估工具 |
| BUF12840 评估模块 | BUF12840EVM | 开发电路板/EVM |
| 用于音频转换器的软件驱动程序 | CODECDRIVERS-SW | 应用软件 |