ADV7340BSTZ - Multiformat Video Encoder, Six 12-Bit DACs | Analog Devices
부품 번호: ADV7340BSTZ ✗ 단종ADV7340BSTZ 개요
A video encoder is a mixed-signal IC that converts a digital video stream from a processor, FPGA, or graphics controller into standard analog video formats. It sits in the video signal chain downstream of digital video interfaces and upstream of composite/S-Video/component analog outputs, performing digital-to-analog conversion, video timing generation, and analog waveform shaping in a single device. Video encoders belong to the broader family of data converters and video interface ICs.
Key features of the ADV7340 include six 12-bit noise-shaped video DACs supporting composite (CVBS), S-Video (Y-C), and component (YPrPb/RGB) analog outputs in standard-definition and high-definition modes, integrated video timing control, on-chip color space conversion, programmable filtering, and support for NTSC/PAL encoding per manufacturer documentation. The NSV DAC architecture reduces quantization noise in the video band, improving signal-to-noise ratio on analog outputs compared with conventional DAC architectures.
The encoder accepts standard digital video input formats such as BT.656 and BT.601 parallel video with embedded or external sync, and uses an I2C-compatible serial interface for register configuration. Analog Devices specifies an industrial temperature grade for this package variant, making it suitable for equipment that must operate in uncontrolled environments. Programmable output amplitude and pedestal settings support both consumer and professional video levels.
Typical applications include DVD and Blu-ray player analog outputs, set-top box composite and component outputs, surveillance and CCTV equipment, broadcast and professional video test equipment, and legacy video interfaces embedded in FPGA or processor-based systems where analog video outputs must coexist with modern digital links such as HDMI (for example, paired with the ADV7511 digital video transmitter).
When designing with this part, note that the manufacturer lists it as NOT RECOMMENDED FOR NEW DESIGNS; new projects should evaluate the pin-compatible ADV7341, which requires no Macrovision license. Ensure the 3.3 V analog supply is well decoupled and filtered, and place the output reconstruction filter close to the DAC outputs.
This page adds distributor availability insight, a drop-in alternative analysis based on the manufacturer's own support forum guidance, and practical design notes not found in the datasheet alone.
드롭인 대체품: ADV7340BSTZ — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: ADV7340BSTZ (동일 폼 팩터 및 풋프린트) — 차이점: Control Interface, DAC Resolution, Function, Package, Lifecycle Status.
ADV7341BSTZ
✅ 드롭인가격 문의
데이터시트 보기 →ADV7340BSTZ-3
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADV7343BSTZ
✅ 드롭인 ⚠️ 사양 미검증가격 문의
데이터시트 보기 →ADV7340BSTZ 최대 정격 & 전기적 특성
| 기능 | Multiformat video encoder with integrated DACs |
| DAC Count | 6 |
| DAC Resolution | 12 bit |
| DAC Architecture | Noise Shaped Video (NSV) |
| Analog Supply Voltage | 3.3 V |
| Analog Output Formats | CVBS, S-Video (Y-C), Component (YPrPb/RGB) |
| Video Standards | NTSC/PAL encoding, SD and HD modes |
| Digital Input Formats | BT.656 / BT.601 style parallel video with external or embedded sync |
| Control Interface | I2C-compatible serial interface |
| 패키지 | 64-LQFP (10 mm x 10 mm) |
| Terminal Form | Gull wing |
| Package Code | LFQFP, square |
| Temperature Grade | Industrial |
| Application | DVD, Blu-ray players, video equipment |
| 실장 유형 | Surface Mount |
ADV7340BSTZ lfqfp, square 핀 구성 가이드
ADV7340BSTZ(lfqfp, square 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: ADV7340BSTZ.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
ADV7340BSTZ 적합 용도: 6 애플리케이션s: DVD and Blu-ray Player Analog Outputs, Set-Top Box and Broadcast Equipment, Surveillance and CCTV Systems, Video Test and Measurement Equipment, FPGA-Based Video Processing Boards, Industrial Video Interface Modules.
DVD and Blu-ray Player Analog Outputs
The ADV7340BSTZ was designed primarily for DVD and Blu-ray playback equipment, as identified in DigiKey's application classification. In these players, the decoded video stream leaves the playback SoC as a parallel digital video bus, and the ADV7340 converts it into the composite CVBS, S-Video, and component YPrPb/RGB outputs required by legacy TVs and projectors. Its six 12-bit noise-shaped DACs allow simultaneous multi-format outputs, so a single chip can drive CVBS plus component at the same time with 12-bit resolution that keeps quantization noise well below the video band. The 3.3 V supply matches common player logic rails, simplifying the power tree. Because the part is now not recommended for new designs, service and repair programs can source remaining stock while volume production should qualify the pin-compatible ADV7341.
추천
Set-Top Box and Broadcast Equipment
Set-top boxes and broadcast head-end equipment use the ADV7340BSTZ to provide standard analog monitoring and modulation outputs from an MPEG decode chain. The encoder accepts BT.656/BT.601-style parallel video with embedded or external sync directly from the transport processor or FPGA, then generates NTSC/PAL-compliant composite and component waveforms with programmable amplitude and pedestal settings that support both consumer and professional video levels. The industrial temperature grade suits head-end installations in uncontrolled environments. Analog Engineers commonly pair the ADV7340 with an FPGA that supplies pixel clock, HSYNC, and VSYNC timing, as documented in manufacturer support threads describing HD composite RGB operation. Designers should follow the manufacturer datasheet output filter recommendations to meet broadcast spectral masks.
추천
Surveillance and CCTV Systems
Surveillance DVRs, CCTV matrices, and security monitors rely on the ADV7340BSTZ to deliver analog composite video to coax-based monitors, multiplexers, and recording inputs. The part encodes multiple simultaneous channels: the six 12-bit noise-shaped DACs can drive composite, S-Video, and component outputs concurrently, letting one device feed both a local monitor loop and a coax distribution chain from a single parallel video input. The industrial temperature grade supports outdoor enclosures and unconditioned equipment rooms. The 3.3 V analog supply integrates cleanly with the DVR's digital logic rails, and the I2C-compatible interface allows firmware to switch output formats on the fly when operators change display configurations. Remaining stock should be allocated to service programs; new designs should use the pin-compatible ADV7341.
추천
Video Test and Measurement Equipment
Video generators, signal analyzers, and production test fixtures use the ADV7340BSTZ as a reference-grade analog video output stage. The 12-bit noise-shaped DAC architecture minimizes in-band quantization noise, which matters when the instrument's output accuracy is specified in dB of SNR, and programmable filtering lets the test engineer select bandwidth and group-delay characteristics per format. Because the encoder supports both standard-definition NTSC/PAL and high-definition component formats in one device, a single test platform can characterize SD CRT-class equipment and HD component inputs without changing hardware. EngineerZone discussions show the device operating with FPGA-generated sync in HD composite RGB mode, confirming suitability for stimulus applications. Register-level control through the I2C-compatible interface enables fully automated test sequences.
추천
FPGA-Based Video Processing Boards
Embedded video processing platforms built around FPGAs use the ADV7340BSTZ as the analog tail of the signal chain. The parallel BT.656/BT.601 input bus connects directly to FPGA I/O, with pixel clock and P-Hsync/P-Vsync timing generated by the FPGA fabric, a topology documented in manufacturer support threads for HD output designs. The ADV7340's SD and HD modes let one board cover multiple output standards, and its six DACs support simultaneous composite plus component feeds. Analog Devices EngineerZone also documents designs in which the ADV7340 and the ADV7511 digital HDMI transmitter share the same 24-bit FPGA data lines while keeping control and clock pins separate, allowing one FPGA to drive both analog and HDMI outputs concurrently. The 64-LQFP package is hand-reviewable for prototype debug.
추천
Industrial Video Interface Modules
Industrial machines, medical imaging consoles, and legacy instrumentation often retain analog video display interfaces that modern SoCs no longer provide. The ADV7340BSTZ bridges this gap: it accepts the processor or FPGA digital video stream and reconstructs compliant CVBS, Y-C, or RGB outputs for plant monitors, CRT-based displays, and frame grabbers. The industrial temperature grade permits use in control cabinets without active cooling, and the 3.3 V single analog supply matches standard industrial logic rails. Because video encoders sit in the display path where failures are immediately visible, the I2C-readable status registers support basic diagnostics from the system controller. For new industrial designs, qualify the pin-compatible ADV7341 rather than embedding a not-recommended-for-new-designs part into a long-lifecycle program.
추천
추천 제품 요약
엔지니어링 참조 데이터: ADV7340BSTZ — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | ADV7341BSTZ | ADV7340BSTZ-3 | ADV7343BSTZ |
|---|---|---|---|---|
| Package | 64-LQFP (10x10) | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| DAC Count / Resolution | 6 x 12-bit NSV | 6 x 12-bit NSV | 6 x 12-bit NSV | 6 x 12-bit NSV |
| Macrovision License | Required | Not required | Required | Not required |
| Analog Output Formats | CVBS, Y-C, YPrPb/RGB | CVBS, Y-C, YPrPb/RGB | CVBS, Y-C, YPrPb/RGB | CVBS, Y-C, YPrPb/RGB (verify per datasheet) |
| Analog Supply | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Pin Compatibility | Reference | Pin-to-pin compatible (per ADI EngineerZone) | Pin-to-pin compatible (same device family) | Same-family LQFP64 encoder; verify pin map in datasheet |
주요 차별점
- Macrovision-capable encoder circuitry (vs ADV7341BSTZ)
- Six simultaneous 12-bit noise-shaped DAC outputs (vs ADV7343BSTZ)
- Industrial temperature grade (vs ADV7341BSTZ)
설계 노트
Supply the analog DAC section from a clean 3.3 V rail with local decoupling (10 uF bulk plus 0.1 uF ceramic at each supply pin pair). Video DAC switching current has fast edges that couple into output waveforms if the supply impedance is high, degrading SNR on CVBS and component outputs. Separate the analog ground return from digital I/O ground return and join them at one star point under the IC. Estimated: a six-DAC encoder at full-scale video loads draws tens of milliamps on the analog rail, so a linear 3.3 V regulator with at least 100 mA headroom is sufficient.
Place the output reconstruction filter network immediately adjacent to the DAC output pins and keep the analog video traces short, matched, and referenced to a continuous ground plane. Do not route digital video bus or clock traces under or beside the analog output traces, as BT.656 bus activity shares territory with nanosecond-scale DAC settling. Follow the filter topology in the manufacturer datasheet typical application circuit for the selected output format, since component values differ between CVBS and HD YPrPb modes.
Analog Devices lists the ADV7340 as NOT RECOMMENDED FOR NEW DESIGNS, so any new design using it carries sourcing risk. The company's EngineerZone guidance identifies the ADV7341 as the pin-compatible substitute requiring no Macrovision license. Also verify HD-mode sync configuration: EngineerZone threads show designs using P-Hsync/P-Vsync for FPGA interface timing and S-Hsync/S-Vsync for output sync in HD composite RGB mode - wiring these incorrectly produces missing or misplaced sync. Register programming differences between ADV7340 and ADV7341 should be reviewed before firmware reuse.
규정 준수 정보
Analog Devices marks the ADV7340 as NOT RECOMMENDED FOR NEW DESIGNS on the official product page. Per-ordering-code RoHS/REACH status should be confirmed on the manufacturer product page or its material declaration before procurement.
