MAX4162(1997) 查看數據表（PDF） - Maxim Integrated
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MAX4162 Datasheet PDF : 12 Pages
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SOT23, Micropower, Single-Supply,
Rail-to-Rail I/O Op Amps
1) The on-board charge pumps generate a small
amount of 700kHz switching noise at the op amp’s
output. The amplitude of this noise is typically
100µVp-p. The noise is not referred to the input, and
is independent of amplifier gain. The charge-pump
switching frequency is well beyond the amplifier’s
200kHz bandwidth, and is therefore unnoticeable in
most applications.
2) The charge pumps typically require up to 20µs on
power-up to fully energize the internal supply rails
(Figure 3).
Power Supplies and Layout
The MAX4162/MAX4163/MAX4164 are guaranteed to
operate from a single +2.7V to +10.0V power supply, but
full rail-to-rail operation typically extends below 2V. For
single-supply operation, bypass the power supply with a
1µF capacitor in parallel with a 0.1µF ceramic capacitor.
If operating from dual supplies, bypass each supply to
ground.
Good layout improves performance by decreasing the
amount of stray capacitance at the op amp’s inputs and
output. To decrease stray capacitance, minimize both
trace and external component lead lengths, and place
external components close to the op amp’s pins.
a)
IN
(1.5V/
div)
POWER-UP TRANSIENT
(VDD = 3V)
MAX4162-38
3V
0V
1.5V
OUT
(750mV/
div)
0V
TIME (100µs/div)
VDD = 3V, VIN = VDD / 2, RL = 10kΩ, CL = 1500pF
b)
POWER-UP TRANSIENT
(VDD = 5V)
MAX4162-39
5V
IN
(2V/
div)
0V
2.5V
OUT
(1V/
div)
0V
TIME (100µs/div)
VDD = 5V, VIN = VDD / 2, RL = 10kΩ, CL = 1500pF
Figure 3. Power-Up Transient: a) VDD = 3V; b) VDD = 5V
_____________________________________________Pin Configurations (continued)
TOP VIEW
OUTA 1
INA- 2
INA+ 3
VSS 4
MAX4163
8 VDD
7 OUTB
6 INB-
5 INB+
SO/µMAX
OUTA 1
INA- 2
INA+ 3
VDD 4
INB+ 5
INB- 6
OUTB 7
MAX4164
SO
14 OUTD
13 IND-
12 IND+
11 VSS
10 INC+
9 INC-
8 OUTC
______________________________________________________________________________________ 11
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