GV7700
The GV7700 is a serial digital video transmitter for High Definition component video. With integrated cable driving technology, the GV7700 is capable of transmitting HD video at a compressed 270Mbps or an uncompressed 1.485Gbps over 75ohm coaxial cable, or differentially over 100ohm twisted pair cable.
The GV7700 integrates the High Definition Visually Lossless CODEC (HD-VLC™) technology, which has been developed specifically to reduce the transmission data rate of HD video over both coaxial and unshielded twisted pair (UTP) cable. This is achieved by encoding the HD video, normally transmitted at a serial data rate of 1.485Gbps, to the same rate as Standard Definition (SD) video, at 270Mbps serial data rate.
At 270Mbps, the effect of cable loss is greatly reduced, resulting in much longer cable transmission. For 75ohm coaxial cable, HD-VLC allows a 1.485Gbps HD signal to be transmitted up to four times the normal reach. In typical video over coaxial installations, when paired with Semtech’s GV7704 HD-VLC receiver, cable distances of up to 500m are possible.
The GV7700 can also be configured to transmit HD video over UTP cable, such as Cat-5e and Cat-6 cable, when HD-VLC encoded at 270Mbps.
Features
- Serial digital video transmitter for HD video surveillance and HDcctv applications
- Dual rate operation: 270Mbps and 1.485Gbps
- Backward compatible with HDcctv 1.0 and HD-SDI (ST 292)
- Integrated High Definition Visually Lossless CODEC (HD-VLC™) for extended cable reach:
- 500m over 75-5 (5C) CCTV coax
- 300m over 75-3 (3C) CCTV coax
- 150m over Cat-5e/6 UTP cable
- Configurable 50/75ohm cable driver output, for both coaxial and twisted pair cable transmission
- Integrated audio embedder with support for up to 4 channels of I2S serial digital audio at 32kHz, 44.1kHz and 48kHz sample rates
- Downstream ancillary data insertion
- Supports both 720p and 1080p HD formats:
- 1080p 25/29.97/30fps
- 720p 25/29.97/30/50/59.94/60fps
- Support for both 8/10-bit and 16/20-bit BT.1120 compliant video interfaces, with embedded TRS or external HVF timing
- 4-wire Gennum Serial Peripheral Interface (GSPI 2.0) for external host command and control
- 1.8V power supply with 3.3V or 1.8V selectable I/O supply
- Small-footprint 84-pin dual-row QFN (7mm x 7mm)
- Low power operation, typically 180mW
- Wide operating temperature range: -20ºC to +85ºC
- Pb-free and RoHS compliant
- HD Security Cameras
- Industrial Video Cameras
- HD-SDI & HDcctv Peripherals
- HD Video Repeaters
- HD Video Converters
- HD Video Multiplexers
アプリケーション
Packaging
- 84-pin dual-row QFN (260 pcs/tray)
Order Codes
- GV7700-INE3
Pb(Lead)-Free/RoHS-Green Info
(-40°C to +85°C / 4000 cycles)
(50°C, 4000 Hrs)
Related Parts
GV7700-INE3
Datasheets & Documentation
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関連情報
To see more videos Videos
スタジアムの巨大スクリーンで野球の試合のアクションのリプレイを視聴する場合でも、大画面テレビで映画を視聴する場合でも、ノートパソコンでビデオをストリーミングする場合でも、高品質のオーディオビジュアル (AV) 体験が常に期待されています。デジタルAV伝送には、超高精細シリアルデジタルインターフェイス (UHD-SDI) と高解像度マルチメディアインターフェイス (HDMI) の2つの規格があります。UHD-SDIは、同軸または光ファイバーケーブルを介した非圧縮・非暗号化のデジタルAV信号の伝送を標準化します。HDMI は、HDMI準拠のソースからAVディスプレイに高解像度、高速デジタルマルチトラックオーディオおよび非圧縮ビデオ信号を送信するためのデジタルインターフェイスです。どちらも超高精細AV信号をソースからディスプレイに転送できますが、コンピューター、ゲーム機、Blu-ray/DVDプレーヤー、テレビ、プロジェクターなどの消費者向け機器の接続にはHDMIが好まれます。UHD-SDIは、ケーブル両端の物理的なロック機構で長距離伝送と堅牢な接続をサポートするため、プロの屋内/屋外ビデオ制作やテレビ放送などのハイエンドアプリケーションに適しています。UHD-SDI同軸ケーブルは最大300フィートの信号を転送できますが、HDMIケーブルは50フィート以内でも過度の信号劣化が問題となります。これら2つのインターフェイスは、HDMI-SDIまたはSDI-HDMIコンバーターを使って併用できます。例えば、図1のように、HDMIディスプレイはSDIストリームの信頼性監視に使用でき、この場合、特別に調整されたSDI固有のディスプレイを使用する必要がなくなります。
Circuit Protection for HDMI-SDI/SDI-HDMI…
今すぐ読む
I designed my first product using the Serial Digital Interface (SDI) back in 1996, and little did I know that this fledgling coax-based video interface standard would dominate my career for the next 20+ years. Back then, SDI was limited to carrying Standard Definition (SD) digital video at 270 Megabits per second (Mbps), but would evolve to higher and higher data rates to carry High Definition 720p, 1080i and 1080p, and most recently 4K Ultra High Definition (UHD) video, at cable lengths that were not thought possible. The convenience of a low cost single conductor coaxial copper cable, capable of carrying 4K video up to 100m has meant that SDI has become the de facto AV connectivity of choice in markets such as broadcast, Pro AV, medical and surveillance.
今すぐ読む