DAC8229FS-REEL - Dual 8-Bit Voltage-Output DAC | ADI
料号： DAC8229FS-REEL ✓ 量产中DAC8229FS-REEL 概述
A DAC is a digital-to-analog converter, a semiconductor category used to translate digital codes into proportional voltage or current signals. The DAC8229 belongs to the voltage-output DAC family within the broader data-converter IC and signal-processing semiconductor hierarchy. Its multiplying architecture means that the output voltage scales with the applied reference signal, making the converter useful when designers need adjustable analog output under software or control-system direction.
The primary features of the DAC8229 include dual-channel operation, 8-bit resolution, and voltage outputs with inverted polarity. The reference input range is ±2.5 V, while a -10 V reference is supported for operation extending to a +10 V output. The manufacturer datasheet also states that the converter dissipates less than 109 mW in the 20-pin 0.3-inch DIP or 20-lead SO surface-mount package, helping control heat in compact multi-channel equipment.
Internally, the DAC8229 uses multiplying CMOS DAC elements and output amplifiers. Each digital input code controls the ratio between the external reference and the analog output, with the internal amplifier providing the required inversion. This structure allows one reference source to establish the scaling for both converter channels, although independent reference routing may be used when the two outputs require different scaling or isolation.
Typical uses include programmable analog control, industrial test equipment, instrumentation, communications equipment, and digital-to-analog interface subsystems. It is particularly appropriate where two low-resolution analog outputs are required without allocating separate converter packages. Its multiplying reference architecture can support gain adjustment, waveform generation, and closed-loop actuator or test-signal control when paired with suitable external circuitry.
The principal design consideration is reference polarity and range. A +2.5 V reference produces an inverted output with respect to the digital code, while a -10 V reference permits a corresponding +10 V output. Input and reference bypassing should be placed close to the device, and output loads must remain within the limits stated by the manufacturer datasheet. Designers should also account for supply sequencing and analog settling time.
This page consolidates the verified manufacturer specifications, packaging information, sourcing links, comparison fields, and application guidance into a design-focused reference for the DAC8229FS-REEL. It also distinguishes verified values from specifications that still require confirmation from the datasheet or an authorized distributor.
直接替换替代料： DAC8229FS-REEL ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料DAC8229FS-REEL 最大额定值与电气特性
| Number of DAC Channels | 2 channels |
| 分辨率 | 8 bits per channel |
| DAC Architecture | Multiplying CMOS |
| 输出类型 | Voltage output with internal amplifier |
| Standard Reference Input Range | ±2.5 V |
| Extended Reference Input | -10 V |
| Maximum Positive Output | +10 V with a -10 V reference |
| Output Polarity | Inverted relative to the applied reference |
| 封装 | 20-lead SOIC surface-mount package |
| Package Option | 20-pin 0.3-inch DIP |
| Power Dissipation | <109 mW |
| 安装类型 | Surface mount |
| Shipping Format | Tape & reel |
DAC8229FS-REEL 20-pin 0.3-inch dip 引脚配置指南
DAC8229FS-REEL（20-pin 0.3-inch dip 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： DAC8229FS-REEL.
请参阅 数据手册 以查看完整引脚配置。
典型应用
DAC8229FS-REEL 适用于 6 应用s: Programmable Test Signal Generation, Industrial Control Signal Output, Communications Equipment Level Control, Precision Reference Scaling, Audio-Style Control and Biasing, Portable Instrumentation.
Programmable Test Signal Generation
The DAC8229FS-REEL is suitable for generating two independently commanded analog test levels because it combines two 8-bit voltage-output channels with a multiplying CMOS architecture. According to the Analog Devices manufacturer datasheet, each channel accepts an external reference and uses an internal amplifier to create an inverted output. A controller can therefore write two digital codes to establish paired reference-modulated test voltages. The converter's stated power dissipation below 109 mW helps maintain compact, thermally manageable instrumentation. Designers should verify output settling, load capability, and allowable reference polarity against the full electrical table before using the outputs to drive sensitive analog equipment.
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Industrial Control Signal Output
The DAC8229FS-REEL can provide low-resolution analog command signals for industrial control subsystems that need two independently updated outputs from a compact IC. Its two 8-bit channels provide independent digital-to-analog paths, while the multiplying reference architecture scales the output relative to an externally supplied reference. The 20-lead SOIC package limits board area, and the manufacturer-listed dissipation below 109 mW is beneficial in densely populated control hardware. For actuator or process-control use, the reference voltage, output polarity, output-current limit, and settling behavior must match the load and control-loop bandwidth; those details require confirmation from the complete datasheet.
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Communications Equipment Level Control
The DAC8229FS-REEL can supply two adjustable analog levels in communications equipment, such as threshold, gain-control, or test-point subsystems, where an 8-bit resolution is adequate for coarse control. The manufacturer datasheet identifies the device as a dual, voltage-output, multiplying CMOS converter, allowing each digital code to establish an output proportional to its reference. Its internal amplifiers remove the need for separate output-buffer stages when the load remains within specified limits. The principal tradeoff is that 8-bit resolution offers only 256 digital codes per channel, so it is better suited to coarse regulation than high-fidelity waveform synthesis.
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Precision Reference Scaling
The multiplying architecture of the DAC8229FS-REEL makes it useful where an analog output must scale with a variable reference rather than with a fixed internal source. According to the Analog Devices manufacturer datasheet, the reference range is normally ±2.5 V, and a -10 V reference can produce a corresponding +10 V output. This supports adjustable signal-level control, offset generation, and compact gain-setting functions when combined with suitable passive networks. Because the output is inverted relative to the reference, design equations and feedback polarity must be checked carefully. Exact load, bandwidth, and stability requirements remain datasheet-dependent.
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Audio-Style Control and Biasing
The DAC8229FS-REEL can create coarse analog bias or attenuation-control voltages in audio and related signal-chain equipment, although its 8-bit resolution is not intended to replace a high-resolution audio DAC. Two voltage-output channels allow independent control of paired bias points, while the multiplying reference determines the available analog range. The manufacturer-stated power dissipation below 109 mW and 20-lead SOIC construction support compact multi-channel assemblies. Engineers should place suitable bypassing at the supply and reference pins, keep analog routing away from noisy digital paths, and confirm whether the internal amplifiers can drive the intended load. Output noise and settling specifications were not supplied and must be checked before low-level audio use.
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Portable Instrumentation
The DAC8229FS-REEL can support two low-resolution analog outputs in compact battery-operated instruments where board area and converter power are important. The device combines two 8-bit channels in one 20-lead SOIC package, reducing component count compared with two single-channel converters. Its manufacturer-listed dissipation below 109 mW offers a bounded power budget, while the multiplying reference permits output scaling from an external source. Portable use still requires attention to supply-voltage limits, reference startup, settling time, and output loading. Those electrical limits are not present in the verified excerpts, so the complete manufacturer datasheet must be used before finalizing a battery-powered design.
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推荐产品汇总
工程参考数据： DAC8229FS-REEL ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 |
|---|---|
| Manufacturer | Analog Devices |
| Package | 20-lead SOIC |
| Number of DAC Channels | 2 channels |
| Resolution | 8 bits per channel |
| DAC Architecture | Multiplying CMOS |
| Output Type | Voltage output with internal amplifier |
| Reference Input Range | ±2.5 V |
| Maximum Positive Output | +10 V with a -10 V reference |
| Power Dissipation | <109 mW |
关键差异点
- Two independent converter channels in one package （对比 Single-channel DAC implementations)
- Multiplying reference capability （对比 Fixed-reference DAC implementations)
- Integrated output amplification （对比 Unbuffered resistor-network DAC stages)
设计说明
The manufacturer datasheet states that DAC8229 power dissipation is below 109 mW. PCB designers should place the supply and reference bypass capacitors close to their associated pins, use a low-noise reference source when output stability matters, and verify the converter's supply requirements against the full electrical-characteristics table. Because the converter is multiplying, reference ripple and reference-noise specifications can appear directly at the output and should be included in the analog-noise budget.
Route the digital input bus and clock or control signals away from the reference, feedback, and output paths to minimize coupling into the multiplying CMOS core and internal amplifiers. Keep the reference and bypass components adjacent to the appropriate device pins, maintain a continuous ground reference, and avoid long traces between the converter and its reference source. The verified evidence identifies a 20-lead SOIC package, but exact pin assignments must be taken directly from the official pinout before routing.
Do not treat DAC8229FS and DAC8229FS-REEL as different electrical designs: the latter is the tape-and-reel ordering form of the former. More importantly, the standard reference input is ±2.5 V, while a -10 V reference is a separate supported operating condition that can produce a corresponding +10 V output. Check output polarity, reference range, and load limits against the complete datasheet before connecting external circuits or substituting an assumed equivalent.
合规信息
The supplied excerpts do not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable because the DAC8229 is an industrial signal-processing converter rather than an automotive-qualified device, and no automotive qualification claim was provided.
