LT1193CS8 查看數據表（PDF） - Linear Technology

零件编号

产品描述 (功能)

生产厂家

LT1193CS8

Video Difference Amplifier

Linear Technology 

TYPICAL PERFOR A CE CHARACTERISTICS

Output Voltage Swing

vs Load Resistance

5 VS = ± 5V

3 TA = –55°C

TA = 25°C

1

TA = 125°C

–1

–3

TA = 125°C

–5

10

TA = –55°C, 25°C

100

LOAD RESISTANCE (Ω)

1000

LT1193 • TPC19

Large-Signal Transient Response

Slew Rate vs Temperature

900

800

– SLEW RATE

700

600

+SLEW RATE

500

VS = ±5V

400 TA = 25°C

RL = 1k

300 VO = ±2V

–50 –25

0 25 50 75

TEMPERATURE (°C)

100 125

LT1193 • TPC20

Small-Signal Transient Response

LT1193

Output Voltage Step

vs Settling Time, AV = 2

4

VS = ±5V

TA = 25°C

RL = 1k

2

10mV

0

–2

10mV

–4

40

50 60 70 80 90 100

SETTLING TIME (ns)

LT1193 • TPC21

Small-Signal Transient Response

LT1193 • TPC22

AV = 2, RL = 150Ω, RFB = 300Ω, RG = 300Ω

LT1193 • TPC23

AV = –10, SMALL-SIGNAL RISE TIME = 43ns

LT1193 • TPC24

AV = 2, RFB = 300Ω, RG = 300Ω,

OVERSHOOT = 25%, RISE TIME = 4.7ns

APPLICATIO S I FOR ATIO

The LT1193 is a video difference amplifier which has two

uncommitted high input impedance (+) and (–) inputs.

The amplifier has one set of inputs that can be used for

reference and feedback. Additionally, this set of inputs

give gain adjust and DC control to the differential amplifier.

The voltage gain of the LT1193 is set like a conventional

operational amplifier. Feedback is applied to Pin 8 and it is

optimized for gains of 2 or greater. The amplifier can be

operated single-ended by connecting either the (+) or (–)

inputs to +/REF, Pin 1. The voltage gain is set by the

resistors: (RFB + RG)/RG.

The primary usefulness of the LT1193 is in converting

high speed differential signals to a single-ended output.

The amplifier has common mode rejection beyond 50MHz

and a full-power bandwidth of 40MHz at 4VP-P. Like the

single-ended case, the differential voltage gain is set by the

external resistors: (RFB + RG)/RG. The maximum input

differential signal for which the output will respond is

approximately ±1.3V.

Power Supply Bypassing

The LT1193 is quite tolerant of power supply bypassing.

In some applications a 0.1µF ceramic disc capacitor

placed 1/2 inch from the amplifier is all that is required. A

scope photo of the amplifier output with no supply by-

passing is used to demonstrate this bypassing tolerance,

RL = 1k.

1193fb

7

Share Link: