The DAC7642 and DAC7643 are dual channel, 16-bit, voltage output Digital-to-Analog Converters (DACs) which provide 15-bit monotonic performance over the specified temperature range. They accept 16-bit parallel input data, have double-buffered DAC input logic (allowing simultaneous update of all DACs), and provide a readback mode of the internal input registers. Programmable asynchronous reset clears all registers to a mid-scale code of 8000H (DAC7642) or to a zero-scale code of 0000H (DAC7643). These DACs can operate from a single +5V supply or from +5V and –5V supplies, providing an output range of 0 to +2.5V or –2.5V to +2.5V, respectively.
Low power and small size per DAC make the DAC7642 and DAC7643 ideal for automatic test equipment, DAC-per-pin programmers, data acquisition systems, and closed-loop servo-control.
| DAC7641 | DAC7642 | DAC7643 | DAC7644 | DAC7742 | |
| Resolution(Bits) | 16 | 16 | 16 | 16 | 16 |
| DAC: Channels | 1 | 2 | 2 | 4 | 1 |
| Settling Time(us) | 10 | 10 | 10 | 10 | 5 |
| Sample / Update Rate(MSPS) | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 |
| Interface | Parallel | Parallel | Parallel | Parallel | Parallel |
| Output Type | Voltage | Voltage | Voltage | Voltage | Voltage |
| Output Range Min.(V or mA) | -2.5 | -2.5 | -2.5 | -2.5 | -10 |
| Output Range Max.(V or mA) | 2.5 | 2.5 | 2.5 | 2.5 | 10 |
| Single/Dual Analog Supply | +/- or + | +/- or + | +/- or + | +/- or + | +/- |
| DNL(Max)(+/-LSB) | 2 | 2 | 2 | 2 | 1 |
| INL(Max)(+/-LSB) | 3 | 3 | 3 | 3 | 3 |
| INL (+/-)(Max)(%) | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 |
| Monotonicity | 15 | 15 | 15 | 15 | 16 |
| Power Consumption(Typ)(mW) | 1.8 | 2.5 | 2.5 | 7.5 | 100 |
| Architecture | R-2R | R-2R | R-2R | R-2R | R-2R |
| Reference: Type | Ext | Ext | Ext | Ext | Int/Ext |
| Analog Voltage AV/DD(Min)(V) | 4.75 | 4.75 | 4.75 | 4.75 | 14.25 |
| Analog Voltage AV/DD(Max)(V) | 5.25 | 5.25 | 5.25 | 5.25 | 15.75 |
| Logic Voltage DV/DD(Min)(V) | 4.75 | 4.75 | 4.75 | 4.75 | 4.75 |
| Logic Voltage DV/DD(Max)(V) | 5.25 | 5.25 | 5.25 | 5.25 | 5.25 |
| No. of Supplies (Unipolar) | 1 | 1 | 1 | 1 | |
| No. of Supplies (Bipolar) | 2 | 2 | 2 | 2 | 3 |
| Rating | Catalog | Catalog | Catalog | Catalog | Catalog |
| Pin/Package | 32TQFP | 32LQFP | 32LQFP | 48SSOP | 48LQFP |
| Approx. Price (US$) | 8.70 | 1ku | 14.55 | 1ku | 14.55 | 1ku | 19.95 | 1ku | 11.90 | 1ku |
| Thermal Shutdown | No | No | No | No | No |
| Operating Temperature Range(°C) | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 |
| 器件 | 状态 | 温度 (oC) | 价格（美元） | 封装 | 引脚 | 封装数量 | 封装载体 | 丝印标记 |
| DAC7643VFBR | ACTIVE | -40 to 85 | 15.30 | 1ku | LQFP (VF) | 32 | 1000 | LARGE T&R | DAC7643 B |
| DAC7643VFBRG4 | ACTIVE | -40 to 85 | 15.30 | 1ku | LQFP (VF) | 32 | 1000 | LARGE T&R | DAC7643 B |
| DAC7643VFT | ACTIVE | -40 to 85 | 14.55 | 1ku | LQFP (VF) | 32 | 250 | SMALL T&R | DAC7643 B |
| DAC7643VFTG4 | ACTIVE | -40 to 85 | 14.55 | 1ku | LQFP (VF) | 32 | 250 | SMALL T&R | DAC7643 B |
| 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 |
| DAC7643VFBR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | DAC7643VFBR | |
| DAC7643VFBRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | DAC7643VFBRG4 | DAC7643VFBRG4 |
| DAC7643VFT | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | DAC7643VFT | |
| DAC7643VFTG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | DAC7643VFTG4 | DAC7643VFTG4 |
| 名称 | 型号 | 公司 | 工具/软件类型 |
| 针对 Code Composer Studio 的 DCPFREETOOL 软件插件 | DCPFREETOOL | Texas Instruments | 实用程序/插件 |
| MDACBufferPro Design Utility for Multiplying Digital to Analog Converter Design | MDACBUFFERPRO | Texas Instruments | 应用软件 |