THS4222D - Dual 120MHz Rail-to-Rail Op Amp | Texas Instruments
Référence : THS4222D ✓ Actif| Qté | Prix unitaire | Total |
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| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1 000 | $0 | $0,00 |
THS4222D Présentation
The THS4222 family belongs to the operational-amplifier category, which sits within analog signal-chain and semiconductor devices. An operational amplifier provides high open-loop gain and uses negative feedback to amplify or condition a differential signal. The rail-to-rail output stage allows the output voltage to swing close to the positive and negative supply rails, improving output utilization in low-voltage systems while retaining useful high-speed performance.
Key features include dual-circuit configuration, rail-to-rail output operation, 120 MHz bandwidth, and 990 V/us slew rate. The family is specifically intended for applications requiring low distortion and high output swing, including analog-to-digital converter input drivers, video switching, and general high-speed amplifier stages. According to the verified manufacturer product description, the family can operate from a single 15 V supply down to a single 3 V supply.
The THS4222D uses a voltage-feedback topology rather than a current-feedback topology. This architecture is commonly selected when straightforward resistor-defined gain, predictable feedback implementation, and general-purpose high-speed signal conditioning are required. Its dual-channel arrangement allows two related signal paths to share one package, reducing board area when the two channels do not need fully independent power management.
Typical applications include ADC input amplification, video-buffer and video-switching circuits, active filtering, test and measurement signal paths, and low-distortion analog front ends. The 3 V minimum supply supports compact portable and embedded systems, while the 15 V maximum family supply provides flexibility for higher-voltage analog rails. Designers should verify input and output common-mode limits, output-load conditions, feedback values, and stability requirements against the manufacturer datasheet before layout release.
When placing the device, keep feedback traces short and symmetrical, provide a solid ground reference, and route high-speed outputs away from sensitive input nodes. Decoupling capacitors should be placed close to the supply pins. Because this is a high-speed amplifier, PCB parasitics, capacitive loading, trace impedance, and connector or via transitions can materially affect gain, bandwidth, and distortion. This page consolidates verified manufacturer and distributor information with engineering-oriented selection guidance and application notes.
This synthesis emphasizes verified product identity, package information, supply capability, bandwidth, slew rate, and practical circuit considerations rather than inferring undocumented specifications. For a production design, use the official TI datasheet and current distributor inventory as the controlling sources for electrical limits, test conditions, pin functions, lifecycle status, and commercial availability.
Alternatives de remplacement direct pour THS4222D — 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 :
THS4222DR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
THS4222D Valeurs maximales et caractéristiques électriques
| Amplifier Type | Voltage-feedback operational amplifier |
| Number of Channels | 2 |
| Supply Voltage Range | 3 V to 15 V |
| Courant de repos | 14 mA |
| Gain-Bandwidth Product | 120 MHz |
| Slew Rate | 990 V/us |
| Output Swing | Rail-to-rail output |
| Feedback Architecture | Voltage feedback |
| Typical Application | Data converter, video switching, low-distortion signal conditioning |
| Boîtier | 8-SOIC |
| Type de montage | Surface mount |
| Operating Voltage | Single supply down to 3 V; single supply up to 15 V |
Guide de configuration des broches du THS4222D 8-soic
Configuration des broches du THS4222D (boîtier 8-soic). Ce composant analogique comporte des broches d'entrée, de sortie et d'alimentation. Consultez la fiche technique du fabricant pour les configurations des broches d'annulation d'offset, de compensation et d'activation. Idéal pour le conditionnement de signaux et les circuits amplificateurs.
Aucune donnée de brochage détaillée disponible pour THS4222D.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
THS4222D convient pour 6 applications: Low-Voltage ADC Input Driver, Video Signal Buffer, High-Speed Active Filter, Test and Measurement Signal Path, Low-Voltage Analog Signal Conditioning, Portable and Embedded Systems.
Low-Voltage ADC Input Driver
THS4222D fits ADC front ends that require a low-voltage amplifier with 120 MHz gain-bandwidth product and 990 V/us slew rate. Place the dual amplifier near the converter input and use short feedback traces to reduce parasitic effects. The rail-to-rail output stage can help preserve signal swing in compact systems operating from a 3 V supply. Because ADC settling and kickback depend on the converter model, check input capacitance, gain, common-mode range, and filtering values against both device data sheets. A series resistor or RC network may be needed when the ADC input is highly capacitive.
Recommandé
Video Signal Buffer
The THS4222D rail-to-rail output and 990 V/us slew rate make it suitable for video buffering and video-switching paths where low distortion and fast edge response are important. Its dual-channel 8-SOIC package allows two video-related signals to share one device when their loading and timing requirements are compatible. Keep the feedback network short, provide local supply bypassing, and account for cable or ADC capacitance that can create ringing. Video amplitude standards, synchronization details, and source impedance should be validated in the target circuit.
Recommandé
High-Speed Active Filter
Use THS4222D for active filtering when the signal path needs substantially more bandwidth than ordinary low-frequency op amps can provide. The 120 MHz gain-bandwidth product and voltage-feedback architecture support conventional resistor-and-capacitor filter implementations, while dual channels can implement complementary or linked filter sections. Component tolerances, op-amp noise, stability, and parasitic capacitance determine the usable cutoff and response. Simulate the complete network with the intended gain, source impedance, load, and supply voltage before fabrication.
Recommandé
Test and Measurement Signal Path
THS4222D can condition low-voltage signals in instrumentation front ends where fast settling and low distortion are more important than micropower operation. Its 3 V-to-15 V family supply range supports compact bench instruments and embedded measurement systems. Use a defined reference or input network, keep the high-speed loop compact, and verify output loading from the instrument or ADC. Calibration and measurement accuracy also depend on resistor selection, source impedance, and the selected gain configuration.
Recommandé
Low-Voltage Analog Signal Conditioning
The THS4222D is appropriate for low-voltage analog conditioning where the design needs more bandwidth or slew capability than general-purpose amplifiers provide. Its single-supply capability down to 3 V helps conserve board area in embedded systems, while the rail-to-rail output can improve signal utilization. Designers should verify the exact input common-mode range, output swing, noise, distortion, and load capability in the TI datasheet. Stable feedback design and careful grounding are essential when operating near the amplifier’s bandwidth limit.
Recommandé
Portable and Embedded Systems
A 3 V minimum family supply makes THS4222D suitable for portable and embedded analog systems that cannot support a higher operating rail. The dual 8-SOIC package provides two channels while keeping the footprint compact, but the 14 mA quiescent current should be included in battery and thermal budgets. Confirm whether the required signal bandwidth justifies the amplifier’s speed and whether the system has sensitive analog or radio-adjacent nodes that could be affected by dynamic output current.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour THS4222D — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | THS4222DR |
|---|---|---|
| Package | 8-SOIC | 8-SOIC - package confirmation required from TI ordering data |
| Brand | Texas Instruments | Texas Instruments |
| Amplifier Configuration | Dual | Dual |
| Feedback Architecture | Voltage feedback | Voltage feedback |
| Primary Applications | Data converters, video switching, low-distortion signal conditioning | THS4222 family applications |
Principaux différenciateurs
- High-speed dual voltage-feedback implementation (vs THS4222DR)
- Single-supply operation down to 3 V (vs THS4222DR)
- Rail-to-rail output swing (vs THS4222DR)
Notes de conception
Place the supply bypass capacitors immediately adjacent to the THS4222D supply pins and use a continuous ground reference under the device where the package and board stackup permit. Keep the feedback resistors and compensation components close to the amplifier pins. For a high-speed voltage-feedback loop, long traces add capacitance and inductance that can change effective gain, reduce phase margin, and increase ringing.
Treat output routing as a controlled-transmission-line problem when cable loads, long PCB traces, or high-capacitance ADC inputs are present. The verified 120 MHz bandwidth and 990 V/us slew rate provide substantial dynamic capability, but they also make edge-rate-induced coupling more likely. Route outputs away from input, reference, and clock traces, minimize vias, and evaluate the complete assembly with an oscilloscope and appropriate impedance control.
Do not assume that rail-to-rail output means every input voltage is supported without distortion. Verify the exact input common-mode range, output swing, load current, supply voltage, and stability conditions in the TI datasheet. Also avoid selecting an amplifier solely by bandwidth; gain, source resistance, capacitive loading, noise, distortion, and power consumption must all be compatible with the application.
Informations de conformité
The supplied verified data identifies Texas Instruments and the THS4222 product family but does not explicitly provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown.
