DAC9881 20 位 Δ-Σ 低功耗数模转换器
DAC9881 说明
The DAC9881 is an 18-bit, single-channel, voltage-output digital-to-analog converter (DAC). It features 18-bit monotonicity, excellent linearity, very low-noise, and fast settling time. The on-chip precision output amplifier allows rail-to-rail output swing to be achieved over the full supply range of 2.7V to 5.5V.
The device supports a standard SPI serial interface capable of operating with input data clock frequencies up to 50MHz. The DAC9881 requires an external reference voltage to set the output range of the DAC channel. A programmable power-on reset circuit is also incorporated into the device to ensure that the DAC output powers up at zero-scale or midscale, and remains there until a valid write command.
Additionally, the DAC9881 has the capability to function in either unipolar straight binary or twos complement mode.
| DAC8830 | DAC8831 | DAC8832 | DAC8881 | DAC9881 | |
| Resolution(Bits) | 16 | 16 | 16 | 16 | 18 |
| DAC: Channels | 1 | 1 | 1 | 1 | 1 |
| Settling Time(us) | 1 | 1 | 1 | 5 | 5 |
| Sample / Update Rate(MSPS) | 1 | 2 | |||
| Interface | Serial SPI | Serial SPI | Serial SPI | Serial SPI | Serial SPI |
| Output Type | Voltage | Voltage | Voltage | Voltage | Voltage |
| Output Range Min.(V or mA) | 0 | -5.5 | -5.5 | 0 | 0 |
| Output Range Max.(V or mA) | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
| Single/Dual Analog Supply | Single | ||||
| DNL(Max)(+/-LSB) | 1 | 1 | 1 | 1 | 1 |
| INL(Max)(+/-LSB) | 1 | 1 | 1 | 1 | 2 |
| INL (+/-)(Max)(%) | 0.0015 | 0.0015 | 0.0015 | 0.0015 | |
| Monotonicity | 16 | 16 | 16 | 16 | 18 |
| Power Consumption(Typ)(mW) | 0.015 | 0.015 | 0.015 | 6 | 6 |
| Architecture | R-2R | R-2R | R-2R | R-2R | R-2R |
| Reference: Type | Ext | Ext | Ext | Ext | Ext |
| Analog Voltage AV/DD(Min)(V) | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 |
| Analog Voltage AV/DD(Max)(V) | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
| Logic Voltage DV/DD(Min)(V) | 2.7 | 2.7 | 2.7 | 2.7 | 1.7 |
| Logic Voltage DV/DD(Max)(V) | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
| No. of Supplies (Unipolar) | 1 | 1 | 1 | 1 | 1 |
| No. of Supplies (Bipolar) | 1 | ||||
| Rating | Catalog | Catalog | Catalog | Catalog | Catalog |
| Pin/Package | 8SOIC | 14SOIC, 14VQFN | 14VQFN | 24VQFN | 24VQFN |
| Approx. Price (US$) | 7.95 | 1ku | 7.95 | 1ku | 7.95 | 1ku | 8.00 | 1ku | 16.90 | 1ku |
| Thermal Shutdown | No | No | No | No | No |
| Operating Temperature Range(°C) | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 105 | -40 to 105 |
DAC9881 特性
- 18-Bit Monotonic Over Temperature Range
- Relative Accuracy: ±2LSB Max
- Low-Noise: 24nV/
Hz
- Fast Settling: 5us
- On-Chip Output Buffer Amplifier with Rail-to-Rail Operation
- Single Power Supply: +2.7V to +5.5V
- DAC Loading Control
- Selectable Power-On Reset to Zero-Scale or Midscale
- Power-Down Mode
- Unipolar Straight Binary or Twos Complement Input Mode
- Fast SPI Interface with Schmitt-Triggered Inputs: up to 50MHz, 1.8V/3V/5V Logic
- Small Package: QFN-24, 4mm × 4mm
- APPLICATIONS
- Automatic Test Equipment
- Precision Instrumentation
- Industrial Control
- Data Acquisition Systems
DAC9881 芯片订购指南
| 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 |
| DAC9881SBRGER | ACTIVE | -40 to 105 | 24.90 | 1ku | VQFN (RGE) | 24 | 3000 | LARGE T&R | DAC 9881 B |
| DAC9881SBRGERG4 | ACTIVE | -40 to 105 | 24.90 | 1ku | VQFN (RGE) | 24 | 3000 | LARGE T&R | DAC 9881 B |
| DAC9881SBRGET | ACTIVE | -40 to 105 | 25.90 | 1ku | VQFN (RGE) | 24 | 250 | SMALL T&R | DAC 9881 B |
| DAC9881SBRGETG4 | ACTIVE | -40 to 105 | 25.90 | 1ku | VQFN (RGE) | 24 | 250 | SMALL T&R | DAC 9881 B |
| DAC9881SRGER | ACTIVE | -40 to 105 | 16.90 | 1ku | VQFN (RGE) | 24 | 3000 | LARGE T&R | DAC 9881 B |
| DAC9881SRGERG4 | ACTIVE | -40 to 105 | 16.90 | 1ku | VQFN (RGE) | 24 | 3000 | LARGE T&R | DAC 9881 B |
| DAC9881SRGET | ACTIVE | -40 to 105 | 17.90 | 1ku | VQFN (RGE) | 24 | 250 | SMALL T&R | DAC 9881 B |
| DAC9881SRGETG4 | ACTIVE | -40 to 105 | 17.90 | 1ku | VQFN (RGE) | 24 | 250 | SMALL T&R | DAC 9881 B |
DAC9881 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 |
| DAC9881SBRGER | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | DAC9881SBRGER | |
| DAC9881SBRGERG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | DAC9881SBRGERG4 | DAC9881SBRGERG4 |
| DAC9881SBRGET | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | DAC9881SBRGET | |
| DAC9881SBRGETG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | DAC9881SBRGETG4 | DAC9881SBRGETG4 |
| DAC9881SRGER | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | DAC9881SRGER | |
| DAC9881SRGERG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | DAC9881SRGERG4 | DAC9881SRGERG4 |
| DAC9881SRGET | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | DAC9881SRGET | |
| DAC9881SRGETG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | DAC9881SRGETG4 | DAC9881SRGETG4 |
DAC9881 应用技术支持与电子电路设计开发资源下载
- DAC9881 数据资料 dataSheet 下载.PDF
- TI 德州仪器仪DAC 模数转换器产品选型与价格 . xls
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 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)
- Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
- A Spreadsheet for Calculating the Frequency Response of the ADS1250-54 (PDF 461 KB)
- A Spreadsheet for Calculating the Frequency Response of the ADS1250-54
- Understanding the ADS1251, ADS1253, and ADS1254 Input Circuitry (PDF 39 KB)
- Analog-to-Digital Converter Grounding Practices Affect System Performance (PDF 56 KB)
- Principles of Data Acquisition and Conversion (PDF 50 KB)
- Interleaving Analog-to-Digital Converters (PDF 64 KB)
- What Designers Should Know About Data Converter Drift (PDF 95 KB)
- Giving Delta-Sigma Converters a Gain Boost with a Front End Analog Gain Stage (PDF 70 KB)
- Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters (PDF 105 KB)
DAC9881 工具与软件
| 名称 | 型号 | 公司 | 工具/软件类型 |
| DXP DAC 操作器程序 | DXP | Texas Instruments | 分析软件 |
| DAC9881 评估模块 | DAC9881EVM | Texas Instruments | 开发电路板/EVM |