MAX4321EUK+T Maxim Integrated Products, MAX4321EUK+T Datasheet - Page 8

• Manufacturer Part Number: MAX4321EUK+T
• Description: IC OP AMP R-R I/O LV SOT23-5
• Manufacturer: Maxim Integrated Products

Specifications of MAX4321EUK+T

• Amplifier Type: General Purpose
• Number Of Circuits: 1
• Output Type: Rail-to-Rail
• Slew Rate: 2 V/µs
• Gain Bandwidth Product: 5MHz
• Current - Input Bias: 50nA
• Voltage - Input Offset: 1200µV
• Current - Supply: 725µA
• Current - Output / Channel: 50mA
• Voltage - Supply, Single/dual (±): 2.4 V ~ 6.5 V, ±1.2 V ~ 3.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-5, SC-74A, SOT-25
• Number Of Channels: 1
• Voltage Gain Db: 103 dB
• Common Mode Rejection Ratio (min): 60 dB
• Input Offset Voltage: 3.5 mV
• Operating Supply Voltage: 3 V, 5 V
• Supply Current: 0.725 mA
• Maximum Power Dissipation: 571 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Maximum Dual Supply Voltage: +/- 3.25 V
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: Details
• Other names: MAX4321EUK+T; MAX4321EUK+TTR

Low-Cost, Low-Voltage, Rail-to-Rail,
Input/Output, SOT23 5MHz Op Amp
The minimum output voltage will be within millivolts of
ground for single-supply operation where the load is
referenced to ground (V
voltage range and output voltage swing of a MAX4321
connected as a voltage follower. With a +3V supply
and the 100kΩ load tied to ground, the output swings
from 0.02V to 2.97V. The maximum output voltage
swing depends on the load but will be within 300mV of
a +5V supply, even with the maximum load (250Ω to
ground).
8
Figure 3. Rail-to-Rail Input /Output Voltage Range
Figure 5. Small-Signal Transient Response with Capacitive
Load
_______________________________________________________________________________________
OUT
OUT
IN
IN
A
C
V
A
V
L
CC
V
= +1
= 500pF
= +1
= 3V
Rail-to-Rail Output Stage
EE
400ns/div
2μs/div
). Figure 3 shows the input
R
L
= 100kΩ
Driving a capacitive load can cause instability in most
high-speed op amps, especially those with low quies-
cent current. The MAX4321 has a high tolerance for
capacitive loads. It is stable with capacitive loads up to
500pF. Figure 4 gives the stable operating region for
capacitive loads. Figures 5 and 6 show the response
with capacitive loads and the results of adding an isola-
tion resistor in series with the output (Figure 7). The
resistor improves the circuit’s phase margin by isolating
the load capacitor from the op amp’s output.
Figure 4. Capacitive-Load Stability
Figure 6. Transient Response to Capacitive Load with Isolation
Resistor
10,000
1000
100
OUT
IN
100
A
C
R
R
V
V
L
S
L
OUT
= +1
= 39Ω
= 1000pF
TO V
= V
EE
CC
/ 2
RESISTIVE LOAD (Ω)
1k
400ns/div
UNSTABLE
REGION
10k
100k