(Figure 6a–6c). Note that this alternative results in a

Power-Supply Bypassing and Layout

The MAX4245/MAX4246/MAX4247 family operates from

either a single +2.5V to +5.5V supply or dual ±1.25V to

±2.75V supplies. For single-supply operation, bypass

with separate 100nF capacitors.

Good PC board layout techniques optimize perfor-

mance by decreasing the amount of stray capacitance

at the op amp’s inputs and output. To decrease stray

capacitance, minimize trace lengths and widths by

placing external components as close to the device as

possible. Use surface-mount components when possi-

ble.

Chip Information

MAX4245 TRANSISTOR COUNT: 207

MAX4246/MAX4247 TRANSISTOR COUNT: 414

PROCESS: BiCMOS

TOP VIEW

OUTB

INB-

INB+

INA+

INA-

OUTA

µMAX-10

1

2

3

4

10

9

8

7

56

SHDNA

SHDNB

MAX4247

Pin Configurations (continued)

Ultra-Small, Rail-to-Rail I/O with Disable,

Single-/Dual-Supply, Low-Power Op Amps

_______________________________________________________________________________________

9

OUT

SHDN

2V/div

2V/div

400

µs/div

Figure 5. Shutdown Waveform

OUT

IN

Figure 6a. Using a Resistor to Isolate a Capacitive Load from

the Op Amp

OUT

IN

100mV/div

100mV/div

10

µs/div

Ω

Figure 6b. Pulse Response Without Isolating Resistor

OUT

IN

100mV/div

100mV/div

10

µs/div

Ω

Ω

Figure 6c. Pulse Response With Isolating Resistor