4

LT1203/LT1205

Note 2: The digital inputs (pins 5, 6 for the LT1203, pins 9, 10, 13, 14 for

the LT1205) are protected against ESD and overvoltage with internal

SCRs. For inputs

≤±6V the SCR will not fire. Voltages above 6V will fire

the SCR and the DC current should be limited to 50mA. To turn off the

SCR the pin voltage must be reduced to less than 2V or the current

reduced to less than 10mA.

Note 3: A heat sink may be required depending on the power supply

voltage.

Note 4: Commercial grade parts are designed to operate over the

temperature range of – 40

°C to 85°C but are neither tested nor guaranteed

beyond 0

°C to 70°C. Industrial grade parts specified and tested over

–40

°C to 85°C are available on special request, consult factory.

Note 6: Slew rate is measured at

±2.0V on a ±2.5V output signal while

operating on

Note 7: Full power bandwidth is calculated from the slew rate

measurement:

FPBW = SR/2

Note 8: For the LT1203, apply 1VDC to pin 1 and measure the time for the

appearance of 0.5V at pin 7 when pin 5 goes from 5V to 0V. Apply 1VDC

to pin 1 and measure the time for disappearance of 0.5V at pin 7 when

pin 5 goes from 0V to 5V. Apply 1VDC to pin 3 and measure the time for

the appearance of 0.5V at pin 7 when pin 5 goes from 0V to 5V. Apply

1VDC to pin 3 and measure the time for disappearance of 0.5V at pin 7

when pin 5 goes from 5V to 0V. For the LT1205 the same test is

performed on both MUXs.

Note 9: For the LT1203, apply 1VDC to pin 1 and measure the time for the

appearance of 0.5V at pin 7 when pin 6 goes from 0V to 5V. Pin 5 voltage

= 0V. Apply 1VDC to pin 1 and measure the time for disappearance of 0.2V

at pin 7 when pin 6 goes from 5V to 0V. Pin 5 voltage = 0V. Apply 1VDC

to pin 3 and measure the time for the appearance of 0.5V at pin 7 when

pin 6 goes from 0V to 5V. Pin 5 voltage = 5V. Apply 1VDC to pin 3 and

measure the time for disappearance of 0.2V at pin 7 when pin 5 goes from

5V to 0V. Pin 5 voltage = 5V. For the LT1205 the same test is performed

on both MUXs.

simultaneously. In disable the output impedance is very high and signal

couples across the package; the load impedance determines the crosstalk.

Note 11: Differential gain and phase are measured using a Tektronix

TSG120 YC/NTSC signal generator and a Tektronix 1780R video

measurement set. The resolution of this equipment is 0.1% and 0.1

°.

Ten identical MUXs were cascaded giving an effective resolution of

0.01% and 0.01

°.

TYPICAL PERFOR A CE CHARACTERISTICS

LOGIC

EN

01

11

0

0*

1

0

*Must be

≤0.5V

TRUTH TABLE

FREQUENCY (MHz)

1

–1

0

1

2

3

10

100

1000

LT1203/05 • TPC02

–2

–3

–4

–5

4

5

–120

–100

–80

–60

–40

–140

–160

–180

–200

–20

0

FREQUENCY (MHz)

1

–1

0

1

2

3

10

100

1000

LT1203/05 • TPC01

–2

–3

–4

–5

4

5

–120

–100

–80

–60

–40

–140

–160

–180

–200

–20

0

±5V Frequency Response

±15V Frequency Response