Datasheet LT1253, LT1254 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | Low Cost Dual and Quad Video Amplifiers |
| Páginas / Página | 8 / 1 — FEATU. DESCRIPTIO. APPLICATI. TYPICAL APPLICATI. Transient Response |
| Formato / tamaño de archivo | PDF / 222 Kb |
| Idioma del documento | Inglés |
FEATU. DESCRIPTIO. APPLICATI. TYPICAL APPLICATI. Transient Response
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LT1253/LT1254 Low Cost Dual and Quad Video Amplifiers
U FEATU S RE DESCRIPTIO
■ Low Cost The LT1253 is a low cost dual current feedback amplifier ■ Current Feedback Amplifiers for video applications. The LT1254 is a quad version of the ■ Differential Gain: 0.03%, R LT1253. The amplifiers are completely isolated except for L = 150Ω, VS = ±5V ■ Differential Phase: 0.28°, R the power supply pins and therefore have excellent isola- L = 150Ω, VS = ± 5V ■ Flat to 30MHz, 0.1dB tion, over 94dB at 5MHz. Dual and quad amplifiers signifi- ■ 90MHz Bandwidth on ±5V cantly reduce costs compared with singles; the number of ■ Wide Supply Range: ±2V(4V) to ±14V(28V) insertions is reduced and fewer supply bypass capacitors ■ Low Power: 60mW per Amplifier at ±5V are required. In addition, these duals and quads cost less per amplifier than single video amplifiers.
O U
The LT1253/LT1254 amplifiers are ideal for driving low
APPLICATI S
impedance loads such as cables and filters. The wide ■ RGB Cable Drivers bandwidth and high slew rate of these amplifiers make ■ Composite Video Cable Drivers driving RGB signals between PCs and workstations easy. ■ Gain Blocks in IF Stages The excellent linearity of these amplifiers makes them ideal for composite video. The LT1253 is available in 8-pin DIPs and the S8 surface mount package. The LT1254 is available in 14-pin DIPs and the S14 surface mount package. Both parts have the industry standard dual and quad op amp pin out. For higher performance, see the LT1229/LT1230.
O U TYPICAL APPLICATI Transient Response
5V VIN + 75Ω 1/2 LT1253 – 75Ω –5V CABLE RF 620Ω VOUT RG 75Ω 620Ω LT1253/54 • TA02 R A F V = 1 + BW = 90MHz VS = ±5V RG AV = 2 AT AMPLIFIER OUTPUT. RL = 150Ω 6dB LESS AT VOUT. LT1253/54 • TA01 VO = 1V 1
U FEATU S RE DESCRIPTIO
■ Low Cost The LT1253 is a low cost dual current feedback amplifier ■ Current Feedback Amplifiers for video applications. The LT1254 is a quad version of the ■ Differential Gain: 0.03%, R LT1253. The amplifiers are completely isolated except for L = 150Ω, VS = ±5V ■ Differential Phase: 0.28°, R the power supply pins and therefore have excellent isola- L = 150Ω, VS = ± 5V ■ Flat to 30MHz, 0.1dB tion, over 94dB at 5MHz. Dual and quad amplifiers signifi- ■ 90MHz Bandwidth on ±5V cantly reduce costs compared with singles; the number of ■ Wide Supply Range: ±2V(4V) to ±14V(28V) insertions is reduced and fewer supply bypass capacitors ■ Low Power: 60mW per Amplifier at ±5V are required. In addition, these duals and quads cost less per amplifier than single video amplifiers.
O U
The LT1253/LT1254 amplifiers are ideal for driving low
APPLICATI S
impedance loads such as cables and filters. The wide ■ RGB Cable Drivers bandwidth and high slew rate of these amplifiers make ■ Composite Video Cable Drivers driving RGB signals between PCs and workstations easy. ■ Gain Blocks in IF Stages The excellent linearity of these amplifiers makes them ideal for composite video. The LT1253 is available in 8-pin DIPs and the S8 surface mount package. The LT1254 is available in 14-pin DIPs and the S14 surface mount package. Both parts have the industry standard dual and quad op amp pin out. For higher performance, see the LT1229/LT1230.
O U TYPICAL APPLICATI Transient Response
5V VIN + 75Ω 1/2 LT1253 – 75Ω –5V CABLE RF 620Ω VOUT RG 75Ω 620Ω LT1253/54 • TA02 R A F V = 1 + BW = 90MHz VS = ±5V RG AV = 2 AT AMPLIFIER OUTPUT. RL = 150Ω 6dB LESS AT VOUT. LT1253/54 • TA01 VO = 1V 1