DS15BR400TVSX/NOPB - 4-Ch LVDS Buffer 2Gbps | TI
Référence : DS15BR400TVSX/NOPB ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1 000 | $0 | $0,00 |
DS15BR400TVSX/NOPB Présentation
An LVDS (Low-Voltage Differential Signaling) buffer/repeater belongs to the broader family of high-speed interface ICs, sitting within the signal-conditioning hierarchy between a differential line driver and the receiving ASIC or serializer. Its role is to regenerate degraded differential signals, restoring amplitude and sharpness so that data can traverse lossy media such as backplanes and cables without violating eye-mask requirements at the receiver.
Key differentiating features include the 2 Gbps per-channel data rate, pre-emphasis that overcomes ISI (inter-symbol interference) jitter introduced by lossy transmission media, and a flow-through pinout that minimizes internal device jitter while dramatically simplifying PCB routing. The differential inputs interface directly to standard LVDS and Bus LVDS signal levels, such as those generated by TI 10-, 16-, and 18-bit serializers, making the device a natural companion in SerDes-based video and data-conversion links.
Architecturally, the DS15BR400 uses high-speed differential input buffers followed by output drivers with programmable-style pre-emphasis compensation. Because the signal path is analog buffer-based rather than clock-and-data-recovery based, latency is deterministic and low (1.0 ns typical), which matters in phase-critical pixel-clock and sample-clock distribution. High-speed data paths with flow-through pin ordering keep intra-pair skew tight and reduce via stubs.
Typical applications include flat-panel display and medical-imaging backplanes carrying FPD-Link or OpenLDI-style LVDS streams, high-speed data acquisition and ADC-to-processor links, and industrial camera or video router systems where 2 Gbps serial streams cross connectors and cable assemblies.
When designing with this part, control the inter-pair skew budget and use controlled-impedance 100-ohm differential routing; pre-emphasis settings should be validated on your specific backplane attenuation, since over-emphasis can increase crosstalk at the far end.
This page synthesizes distributor pricing context, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternatives de remplacement direct pour DS15BR400TVSX/NOPB — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
DS15BR401TVSX/NOPB
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
DS15BR401TVS/NOPB
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
DS15BR400TVS/NOPB
✅ Remplacement direct✓ En stock
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Voir la fiche technique →DS15BR400TVSX/NOPB Spécifications
| Fonction | 4-channel LVDS buffer/repeater with pre-emphasis |
| Débit de données | Up to 2 Gbps per channel |
| Tension d'alimentation | 3.0 V to 3.6 V |
| Courant d'alimentation | 215 mA (typ) |
| Power Consumption | 578 mW (typ) |
| Propagation Delay | 1.0 ns (typ) |
| Capacité d'entrée | 3 pF |
| Input Interface | LVDS / Bus LVDS compatible |
| Canaux | 4 differential channels |
| Pre-Emphasis | Yes (compensates ISI jitter on lossy backplanes/cables) |
| Pinout Style | Flow-through |
| Température de fonctionnement | -40C to +85C |
| Boîtier | 48-TQFP (PFB), 7x7 mm |
| Type de montage | Surface Mount |
| Packaging | Tape & Reel |
Guide de configuration des broches du DS15BR400TVSX/NOPB 48-tqfp (pfb), 7x7 mm
Configuration des broches du DS15BR400TVSX/NOPB (boîtier 48-tqfp (pfb), 7x7 mm). La numérotation des broches, les fonctions et les schémas de connexion sont définis dans la fiche technique du fabricant. Consultez-la pour l'empreinte exacte et les directives de soudage.
Aucune donnée de brochage détaillée disponible pour DS15BR400TVSX/NOPB.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
DS15BR400TVSX/NOPB convient pour 6 applications: FPD-Link Display Backplanes, Medical Imaging Data Links, Industrial Video Router and Switcher, High-Speed ADC-to-FPGA Links, Cable Interconnect Redriving, Test and Measurement Instrument Backplanes.
FPD-Link Display Backplanes
Flat-panel display backplanes carry serialized pixel data from a timing controller to source drivers over LVDS pairs routed through FR-4 and connectors. The DS15BR400TVSX/NOPB fits this role because its 2 Gbps per-channel rate covers 10-, 16-, and 18-bit FPD-Link/OpenLDI payload streams, and its LVDS/Bus LVDS compatible inputs connect directly to TI serializer outputs. Pre-emphasis compensates ISI jitter accumulated across the backplane so the receiving deserializer sees an open eye at full rate. The flow-through pinout routes input pairs on one edge and output pairs on the other, minimizing crosstalk and simplifying via strategy on dense display boards. Placed midway along long backplane runs with 100-ohm differential termination, the repeater restores signal amplitude with only 1.0 ns typical added latency, which is negligible for pixel-clock synchronization.
Recommandé
Medical Imaging Data Links
Medical imaging systems such as ultrasound and digital radiography move high-rate ADC or sensor data from front-end boards to processing units over backplanes or cable assemblies. The DS15BR400TVSX/NOPB suits these links because its analog buffer architecture adds only 1.0 ns typical deterministic latency with no clock-and-data-recovery phase noise contribution, preserving timing coherence between sample channels - important for beamforming and image reconstruction. The 2 Gbps per-channel rate accommodates multi-channel serialized data, and pre-emphasis maintains eye opening across lossy flex or backplane media. The -40C to +85C industrial operating range and 578 mW typical dissipation in the 7x7 mm 48-TQFP fit thermally constrained imaging head units. Four independent channels let one device regenerate an entire 32-bit LVDS payload with clock pair in a single footprint.
Recommandé
Industrial Video Router and Switcher
Broadcast and industrial video routers switch multi-Gbps LVDS streams between cards across a passive backplane. The DS15BR400TVSX/NOPB fits as a per-port redriver: its LVDS/Bus LVDS inputs accept serializer outputs directly, and pre-emphasis restores ISI-degraded edges after the lossy backplane hop, allowing 2 Gbps operation where unbuffered links would fail. The flow-through pinout allows straightforward card-edge routing with matched intra-pair lengths, and the 3.0 V to 3.6 V supply integrates into standard 3.3 V card power. Because each channel is independent, one 48-TQFP device services a full four-pair link including clock. Typical insertion adds 215 mA of load current and 1.0 ns of delay, which router timing budgets absorb easily while gaining significant signal-margin improvement at the crosspoint receiver.
Recommandé
High-Speed ADC-to-FPGA Links
Data acquisition systems frequently serialize converter outputs over LVDS into FPGAs across connectors or backplanes. The DS15BR400TVSX/NOPB regenerates these streams when path loss closes the eye at the FPGA receiver. Its 2 Gbps per-channel capability covers common 12- and 16-bit ADC serialization rates, and its Bus LVDS input compatibility interfaces directly with TI converter families. Because it is a buffer rather than a retimer, the bit-level sample-clock phase relationship is preserved with only 1.0 ns typical delay, simplifying static timing analysis in the FPGA. Pre-emphasis overcomes ISI from backplane transitions, and the flow-through pinout supports clean, length-matched routing from card connector to FPGA I/O bank. The 578 mW typical consumption keeps card power budgets predictable in multi-channel acquisition shelves.
Recommandé
Cable Interconnect Redriving
LVDS streams crossing external cable assemblies, such as camera-link-style tethered sensors or shelf-to-shelf interconnects, suffer attenuation and ISI that push receivers out of margin. The DS15BR400TVSX/NOPB serves as a remote redriver at the cable receive end: its pre-emphasis pre-distorts output edges to compensate the remaining board-level loss after the cable, while its LVDS-compatible inputs present a standard 100-ohm terminated load to the cable. At 2 Gbps per channel it supports high-resolution serial payloads, and its industrial -40C to +85C range suits harsh floor environments. The 48-TQFP flow-through package makes a simple two-connector daughter-card design possible with matched differential routing and only 215 mA typical supply current, restoring full eye margin at the destination deserializer.
Recommandé
Test and Measurement Instrument Backplanes
Modular test instruments distribute high-rate sample and trigger data between plug-in cards over a common backplane. The DS15BR400TVSX/NOPB provides transparent regeneration on these paths: 2 Gbps per-channel bandwidth supports wide converter payloads, the 1.0 ns typical delay keeps trigger-path skew small and predictable, and pre-emphasis compensates the repeatable attenuation of the backplane routing. The four independent channels allow one device to redrive a complete differential payload-plus-clock group, reducing component count versus per-pair solutions. Operating from a 3.0 V to 3.6 V rail at 215 mA typical, the part integrates into existing 3.3 V card supplies, and the -40C to +85C specification meets lab-to-field deployment ranges. The flow-through 48-TQFP pinout simplifies repeatable, low-skew card-edge layout across instrument families.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour DS15BR400TVSX/NOPB — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | DS15BR401TVSX/NOPB | DS15BR401TVS/NOPB | DS15BR400TVS/NOPB |
|---|---|---|---|---|
| Package | 48-TQFP (PFB), 7x7 mm | 48-TQFP (PFB), 7x7 mm - same | 48-TQFP (PFB), 7x7 mm - same | 48-TQFP (PFB), 7x7 mm - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Data Rate | Up to 2 Gbps | Up to 2 Gbps | Up to 2 Gbps | Up to 2 Gbps |
| Output Polarity | Non-inverting buffer | Inverting (verify per datasheet) | Inverting (verify per datasheet) | Non-inverting - identical |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Propagation Delay | 1.0 ns (typ) | 1.0 ns (typ) | 1.0 ns (typ) | 1.0 ns (typ) |
| Pre-Emphasis | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Principaux différenciateurs
- Analog buffer architecture with deterministic 1.0 ns delay (vs CDR-based retimers in the same function class)
- Pre-emphasis for lossy backplane/cable channels (vs DS15BR400TVS/NOPB run without pre-emphasis benefit on long channels)
- Flow-through pinout in 48-TQFP (vs DS15BR401TVSX/NOPB (same flow-through) vs non-flow-through repeater alternatives)
Notes de conception
Route all LVDS pairs as 100-ohm controlled-impedance differential lines with matched intra-pair lengths. The DS15BR400 datasheet emphasizes that databook specifications must be met without exception over power supply, temperature, and input/output loading to guarantee reliable operation. Keep intra-pair skew below a few picoseconds by routing pairs symmetrically and avoid via stubs; the flow-through pinout exists specifically to support this. Inter-pair skew determines channel-to-channel timing error, so length-match pairs carrying related payload and clock signals.
Decouple each supply pin with 0.1 uF ceramic capacitors placed within 2 mm of the pin, plus bulk 10 uF per device. The 215 mA typical supply current includes simultaneous-switching output transients on four LVDS pairs, so use a solid ground plane under the TQFP-48 and minimize the loop area of the supply path. Locate the device close to the backplane or cable connector it serves to keep the lossy medium before the repeater and the clean pre-emphasized output after it.
Two common mistakes: (1) substituting the WQFN-32 package variant on a TQFP-48 footprint - the packages are not pin-compatible and require a new PCB layout. (2) Confusing DS15BR400 with DS15BR401 polarity conventions in a link that assumes specific P/N pair phasing; verify output polarity in the datasheet pin table before swapping. Also confirm pre-emphasis suitability for your actual channel loss - a short, low-loss link may see increased far-end crosstalk from over-emphasized edges.
Informations de conformité
NOPB suffix indicates No Pull (no pulled/BGA balls variant naming); RoHS/lead-free status was not explicitly stated in the provided web data and must be confirmed on the TI product page or distributor compliance certificates.
