DAC8408FS-REEL - Quad 8-Bit DAC with Memory | Analog Devices
부품 번호: DAC8408FS-REEL ✓ 활성DAC8408FS-REEL 개요
A digital-to-analog converter is an interface integrated circuit that translates digital code words into proportional analog voltages or currents. A multiplying DAC differs from a fixed-output converter because its output depends on both the digital input code and an external reference. Within the electronics hierarchy, the DAC8408 belongs to the ADC/DAC class of data-conversion ICs used to connect digital processing systems with analog instrumentation, control, or signal-generation circuits.
The four-channel architecture reduces component count when a system requires several independently controlled analog outputs. Read/write-compatible latches allow the converter to retain digital information and support microprocessor or computer interfacing. The manufacturer description also identifies TTL/CMOS compatibility, four-quadrant multiplying operation, and processor-compatible control as important characteristics for deterministic digital-to-analog system integration.
Each converter includes its own reference input and feedback resistor, allowing the four channels to use common or individual reference arrangements depending on the application. Independent references can support parallel channels with different scaling requirements, while a shared reference simplifies synchronization and tracking between channels. The guaranteed endpoint linearity and monotonicity support predictable transfer behavior in control, instrumentation, and waveform-generation systems.
Typical uses include industrial process-control outputs, programmable test and measurement systems, multichannel instrumentation, industrial automation equipment, and embedded data-acquisition systems. The same-package DAC8408FSZ-REEL can serve as a directly comparable alternative when its grade and sourcing conditions are appropriate, but designers should verify the complete electrical specification and ordering information before substitution.
The primary design consideration is reference and feedback implementation. Because the DAC is multiplying, reference quality and stability directly influence output accuracy. Layout should keep reference and analog-output paths compact, provide a low-impedance return for each channel, and isolate digital write activity from sensitive analog nodes. The 28-pin SOIC footprint also requires attention to thermal performance when all four channels operate continuously.
This page consolidates the verified manufacturer description, distributor sourcing information, practical application guidance, and a conservative same-package comparison. Because the supplied search snapshot does not expose numerical pricing, pin assignments, or a qualified drop-in cross-reference set, unavailable engineering fields are explicitly identified rather than inferred.
드롭인 대체품: DAC8408FS-REEL — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
DAC8408FSZ-REEL
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
DAC8408FS-REEL 최대 정격 & 전기적 특성
| Converter Type | Quad 8-bit multiplying CMOS digital-to-analog converter with memory |
| Number of DAC Channels | 4 channels |
| 분해능 | 8 bits |
| DAC Architecture | Multiplying DAC |
| Reference Inputs | 1 independent reference input per DAC |
| Feedback Resistors | 1 onboard feedback resistor per DAC |
| Data Latches | 4 onboard read/write-compatible latches |
| Endpoint Linearity | Guaranteed to 1/4 LSB |
| Monotonicity | Guaranteed monotonic |
| DAC Matching | Matched to within 1% |
| Logic Compatibility | TTL/CMOS compatible |
| Interface Compatibility | Microprocessor compatible |
| Multiplying Operation | Four-quadrant |
| 패키지 | 28-pin SOIC |
| Terminal Count | 28 terminals |
| Temperature Grade | Industrial |
| Shipping Form | Gull wing, tape and reel |
DAC8408FS-REEL 28-pin soic 핀 구성 가이드
DAC8408FS-REEL(28-pin soic 패키지)의 핀 구성입니다. 이 아날로그 부품에는 입력, 출력, 전원 공급 핀이 있습니다. 오프셋 널, 보상, 인에이블 핀 구성은 제조사 데이터시트를 참조하십시오. 신호 컨디셔닝 및 증폭기 회로에 이상적입니다.
다음에 대한 상세 핀아웃 데이터 없음: DAC8408FS-REEL.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
DAC8408FS-REEL 적합 용도: 6 애플리케이션s: Industrial Process Control, Programmable Test and Measurement, Multichannel Instrumentation, Embedded Data-Acquisition Systems, Industrial Automation, Programmable Voltage Sources.
Industrial Process Control
The DAC8408FS-REEL fits industrial process-control systems that require several independently commanded analog outputs from one 28-pin SOIC. Four dedicated converter channels reduce the number of separate DAC packages and associated routing, while read/write-compatible onboard latches support digital control and test access. The verified 8-bit resolution is appropriate for basic setpoints and actuator commands. Designers should preserve the guaranteed 1/4-LSB endpoint linearity and monotonic operation when setting output ranges, and verify supply-voltage, settling-time, and noise specifications in the manufacturer datasheet before closing a control loop.
Programmable Test and Measurement
A four-channel DAC8408FS-REEL can generate multiple programmable test levels, bias points, or excitation voltages in a compact instrument. Each channel has its own reference input and feedback resistor, allowing the instrument designer to use a common reference for synchronized channels or separate references where channel scaling differs. The onboard read/write latches make stored digital states useful in automated test sequences. Engineers should treat the converter as an 8-bit source and account for its endpoint accuracy when defining measurement tolerances, then confirm settling behavior from the complete Analog Devices datasheet.
Multichannel Instrumentation
The DAC8408FS-REEL suits laboratory and field instruments that need four analog channels for control, monitoring, or signal conditioning. Integrating four 8-bit multiplying DACs into one 28-pin SOIC reduces component count and simplifies board-area allocation compared with four discrete single-channel implementations. Independent reference inputs provide flexibility when channels must use different scales. The guaranteed monotonic characteristic is valuable for predictable output motion, while the 1% matching specification helps assess channel-to-channel consistency. Final calibration should nevertheless include offset, gain, and endpoint correction based on measured production behavior.
Embedded Data-Acquisition Systems
The DAC8408FS-REEL can provide programmable analog stimulus or reference outputs in embedded data-acquisition equipment. Its read/write-compatible data latches allow a host processor or microcontroller to update stored converter codes and use the DAC outputs for loopback testing, sensor excitation, or auxiliary control. Four channels in one package can simplify routing compared with four separate converters, but software must respect the device interface timing and the device's 8-bit code granularity. The provided sources do not expose setup timing or bus timing, so those limits must be taken directly from the manufacturer datasheet.
Industrial Automation
The quad-channel architecture makes the DAC8408FS-REEL practical for industrial automation modules that generate several low-bandwidth command voltages. The verified industrial temperature-grade listing supports consideration in industrial equipment, while endpoint linearity to 1/4 LSB and guaranteed monotonicity support repeatable command generation. Because this is a multiplying DAC, reference accuracy and stability directly scale the output. Layout should keep reference routing short and isolate digital control signals from analog outputs, particularly where small actuator-command margins could be affected by reference noise or board-level interference.
Programmable Voltage Sources
The DAC8408FS-REEL can implement a compact four-channel programmable voltage source for biasing, test fixtures, and low-speed excitation systems. Its multiplying architecture allows the digital codes to be scaled by the external reference, making the reference selection a direct part of output-range design. Separate reference inputs let channels represent different voltage scales, while a common reference can improve tracking between related outputs. Engineers should calculate headroom for the chosen reference and output topology, verify the converter's settling time and output compliance from the complete datasheet, and include calibration for the 8-bit resolution.
엔지니어링 참조 데이터: DAC8408FS-REEL — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | DAC8408FSZ-REEL |
|---|---|---|
| Package | 28-pin SOIC | 28-pin SOIC |
| Brand | Analog Devices | Analog Devices |
| Converter Type | Quad 8-bit multiplying CMOS DAC with memory | 8-bit, four-channel DAC |
| Number of Channels | 4 | 4 |
| Resolution | 8 bits | 8 bits |
주요 차별점
- Four integrated converter channels (vs DAC8408FSZ-REEL)
- Independent analog-channel organization (vs MAX521AEWG+T)
- Guaranteed conversion characteristics (vs AD7524LPZ-REEL)
설계 노트
Place each reference input and feedback-network connection close to its associated DAC channel. The DAC8408 uses multiplying references, so long reference traces can increase noise pickup and impedance errors. Route the four analog channels with short return paths to the system ground plane and keep digital interface traces away from reference and output nodes. Because the verified package is a 28-pin SOIC, preserve adequate copper and thermal spreading around the device when all four channels operate continuously.
Decouple each supply rail at the device with capacitors selected according to the manufacturer datasheet and the impedance of the actual board. Keep the capacitor return path short and avoid placing switching-regulator or digital return current beneath the analog outputs. Since the DAC8408 is a multiplying converter, reference and supply noise can appear as output error. Validate the completed board with a scope at the output and reference pins rather than assuming that logic-level noise immunity alone is sufficient.
Do not treat the DAC8408FSZ-REEL listing as proof that every ordering, temperature, or lifecycle characteristic is identical to DAC8408FS-REEL. Obtain the manufacturer ordering table and complete datasheet before substitution. Also avoid treating MAX521AEWG+T, AD7524LPZ-REEL, or DAC08EPZ as drop-in parts merely because comparison pages list them: the supplied excerpts do not establish a shared 28-pin footprint, pin-to-pin mapping, and equivalent four-channel memory architecture.
규정 준수 정보
The supplied verified excerpts do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable because this is an industrial DAC rather than an automotive-qualified device; no automotive qualification is claimed.