LT1352 datasheet(11/20 Pages) LINER

11 / 20 page

LT6020/LT6020-1

60201fa

For more information www.linear.com/LT6020

pin FuncTions

OUT: Amplifier Output.

–IN: Inverting Input of the Amplifier.

+IN: Noninverting Input of the Amplifier.

V–: Negative Power Supply. A bypass capacitor should be

used between supply pins and ground. Additional bypass

capacitance may be used between the power supply pins.

DGND(LT6020-1Only):ReferenceforENPin.Itisnormally

tied to ground. DGND must be in the range from V– to V+

–3V. If grounded, V+ must be ≥ 3V. The EN pin threshold

is specified with respect to the DGND pin. DGND cannot

be floated.

EN (LT6020-1 Only): Enable Input. This pin must be

connected high, normally to V+, for the amplifiers to be

functional. EN is active high with the threshold approxi-

mately two diodes above DGND. EN cannot be floated.

The shutdown threshold voltage is specified with respect

to the voltage on the DGND pin.

V+: Positive Power Supply. A bypass capacitor should be

used between supply pins and ground. Additional bypass

capacitance may be used between the power supply pins.

siMpliFieD scheMaTic

60201 BD

+IN

V+

–IN

OUT

200k

LT6020-1 ONLY

DGND

V–

LOAD

CLASS AB

DRIVE

applicaTions inForMaTion

Preserving Low Power Operation

The proprietary circuitry used in the LT6020 provides an

excellent combination of low power, low offset and en-

hancedslewrate.Normallyanamplifierwithhighersupply

current would be required to achieve this combination of

slew rate and precision. Special care must be taken to

ensure that the low power operation is preserved.

The choice of feedback resistor values impacts several

op-amp parameters as noted in the feedback compo-

nents section. It should also be noted that the output of

the amplifier must drive this network. For example, in a

gain of two with a total feedback resistance of 10kΩ and

an output voltage of 14V, the amplifier’s output will need

to supply 1.4mA of current. This current will ultimately

come from a supply.

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