LTC6246/LTC6247/LTC6248



624678fa

elecTrical characTerisTics

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: The inputs are protected by back-to-back diodes. If any of

the input or shutdown pins goes 300mV beyond either supply or the

differential input voltage exceeds 1.4V the input current should be limited

to less than 10mA. This parameter is guaranteed to meet specified

performance through design and/or characterization. It is not production

tested.

Note 3: A heat sink may be required to keep the junction temperature

below the absolute maximum rating when the output current is high.

Note 4: The LTC6246C/LTC6247C/LTC6248C and LTC6246I/LTC6247I/

LTC6248I are guaranteed functional over the temperature range of –40°C

to 85°C. The LTC6246H/LTC6247H/LTC6248H are guaranteed functional

over the temperature range of –40°C to 125°C.

Note 5: The LTC6246C/LTC6247C/LTC6248C are guaranteed to meet

specified performance from 0°C to 70°C. The LTC6246C/LTC6247C/

LTC6248C are designed, characterized and expected to meet specified

performance from –40°C to 85°C but are not tested or QA sampled at

these temperatures. The LTC6246I/LTC6247I/LTC6248I are guaranteed

to meet specified performance from –40°C to 85°C. The LTC6246H/

LTC6247H/LTC6248H are guaranteed to meet specified performance from

–40°C to 125°C.

Note 6: Minimum supply voltage is guaranteed by power supply rejection

ratio test.

Note 7: The input bias current is the average of the average of the currents

through the positive and negative input pins.

Note 8: Matching parameters are the difference between amplifiers A and

D and between B and C on the LTC6248; between the two amplifiers on the

LTC6247.

Note 9: Thermal resistance varies with the amount of PC board metal

connected to the package. The specified values are with short traces

connected to the leads with minimal metal area.

Note 10: The output voltage is varied from 0.5V to 4.5V during

measurement.

supply.

Note 12: The output voltage is varied from 0.5V to 2.2V during

measurement.

Note 13: FPBW is determined from distortion performance in a gain of +2

configuration with HD2, HD3 < –40dBc as the criteria for a valid output.

Note 14: Differential gain and phase are measured using a Tektronix

TSG120YC/NTSC signal generator and a Tektronix 1780R video

measurement set.

(MS, PNP Stage)

(TSOT-23, PNP Stage)

(MS, NPN Stage)

Typical perForMance characTerisTics

1.35V, unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

FPBW

Full Power Bandwidth

3.3

MHz

Crosstalk

–90

dB

INPUT OFFSET VOLTAGE (µV)

22

20

16

12

8

2

18

14

10

6

4

0

–50

–150

150

624678 G01

350

250

–250

–375

50

INPUT OFFSET VOLTAGE (µV)

25

15

5

20

10

0

–125

–25

–75

624678 G02

75

125

25

175

–175

INPUT OFFSET VOLTAGE (µV)

16

12

8

2

14

10

6

4

0

–1200

400

–400

624678 G03

1200

2000

–2000