DAC8229FS-REEL - Dual 8-Bit Voltage-Output DAC | ADI
部品番号: DAC8229FS-REEL ✓ 生産中DAC8229FS-REEL 概要
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.
ドロップイン代替品: DAC8229FS-REEL — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
この製品に利用可能なドロップイン代替品はありません。
代替品をリクエストDAC8229FS-REEL 最大定格＆電気的特性
| Number of DAC Channels | 2 channels |
| 分解能 | 8 bits per channel |
| DAC Architecture | Multiplying CMOS |
| 出力タイプ | 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 |
| パッケージ | 20-lead SOIC surface-mount package |
| Package Option | 20-pin 0.3-inch DIP |
| Power Dissipation | <109 mW |
| 実装タイプ | Surface mount |
| Shipping Format | Tape & reel |
DAC8229FS-REEL 20-pin 0.3-inch dip ピン配置ガイド
DAC8229FS-REEL (20-pin 0.3-inch dip パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: DAC8229FS-REEL.
詳細は データシート をご参照ください。
主な用途
DAC8229FS-REEL の用途: 6 件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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: DAC8229FS-REEL — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 |
|---|---|
| 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 |
主な差別化要因
- Two independent converter channels in one package （vs Single-channel DAC implementations)
- Multiplying reference capability （vs Fixed-reference DAC implementations)
- Integrated output amplification （vs Unbuffered resistor-network DAC stages)
設計ノート
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.
コンプライアンス情報
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.
