LTC6246/LTC6247/LTC6248

7

Rev C

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ELECTRICAL CHARACTERISTICS (VS = 2.7V) The

l

denotes the specifications which apply across the

specified temperature range, otherwise specifications are at TA = 25°C. For each amplifier VS = 2.7V, 0V; VSHDN = 2V; VCM = VOUT =

1.35V, unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

ISD

Disable Supply Current per Amplifier

VSHDN = 0.8V

l

22

50

90

µA

µA

ISHDNL

SHDN Pin Current Low

VSHDN = 0.8V

l

–1

–1.5

–0.5

0

0

µA

µA

ISHDNH

SHDN Pin Current High

VSHDN = 2V

l

–300

–350

45

300

350

nA

nA

VL

SHDN Pin Input Voltage

l

0.8

V

VH

SHDN Pin Input Voltage

l

2.0

V

IOSD

Output Leakage Current Magnitude in Shutdown VSHDN = 0.8V, Output Shorted to Either

Supply

100

nA

tON

Turn-On Time

VSHDN = 0.8V to 2V

5

µs

tOFF

Turn-Off Time

VSHDN = 2V to 0.8V

2

µs

BW

–3dB Closed Loop Bandwidth

AV = 1, RL = 1k to Half Supply

100

MHz

GBW

Gain-Bandwidth Product

f = 2MHz, RL = 1k to Half Supply

l

80

50

150

MHz

tS, 0.1

Settling Time to 0.1%

AV = –1, VO = 2V Step RL = 1k

119

ns

tS, 0.01

Settling Time to 0.01%

AV = –1, VO = 2V Step RL = 1k

170

ns

SR

Slew Rate

AV = –1, 2V Step

55

V/µs

FPBW

Full Power Bandwidth

VOUT = 2VP-P (Note 13)

3.3

MHz

Crosstalk

AV = –1, RL = 1k to Half Supply,

VOUT = 2VP-P, f = 1MHz

–90

dB

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.

Note 11: Middle 80% of the output waveform is observed. RL = 1k at half

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.