3

LT1208/LT1209

ELECTRICAL C

C

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Resistance

20

40

M

Ω

Differential

250

k

Ω

Input Capacitance

2pF

CMRR

Common-Mode Rejection Ratio

86

98

dB

q

83

dB

PSRR

Power Supply Rejection Ratio

76

84

dB

0

°C to 70°C

q

75

dB

Input Voltage Range

±12

±13

V

±2.5

±3V

Large-Signal Voltage Gain

3.3

7

V/mV

0

°C to 70°C

q

2.5

V/mV

2.5

7

V/mV

0

°C to 70°C

q

2.0

V/mV

3

V/mV

Output Swing

q

12.0

13.3

±V

q

3.0

3.3

±V

Output Current

q

24

40

mA

q

20

40

mA

SR

Slew Rate

250

400

V/

µs

0

°C to 70°C

q

200

V/

µs

150

250

V/

µs

0

°C to 70°C

q

130

V/

µs

Full Power Bandwidth

10V Peak, (Note 4)

6.4

MHz

GBW

Gain-Bandwidth

45

MHz

34

MHz

Rise Time, Fall Time

5

ns

7

ns

Overshoot

30

%

20

%

Propagation Delay

5ns

7ns

Settling Time

90

ns

5V Step, 0.1%

Differential Gain

1.30

%

0.09

%

Differential Phase

1.8

Deg

0.1

Deg

Output Resistance

2.5

Ω

Crosstalk

–100

– 94

dB

Supply Current

7

9

mA

0

°C to 70°C

q

10.5

mA

Note 3: Slew rate is measured in a gain of –2. For

±15V supplies measure

between

±10V on the output with ±6V on the input. For ±5V supplies

measure between

±2V on the output with ±1.75V on the input.

Note 4: Full power bandwidth is calculated from the slew rate

measurement: FPBW = SR/2

temperature range.

Note 1: A heat sink may be required to keep the junction temperature

below absolute maximum when the output is shorted indefinitely.

Note 2: Input offset voltage is tested with automated test equipment and is

exclusive of warm-up drift.