MAX4232AKA+T Maxim Integrated Products, MAX4232AKA+T Datasheet - Page 11

• Manufacturer Part Number: MAX4232AKA+T
• Description: IC OP AMP R-R W/SD SOT23-8
• Manufacturer: Maxim Integrated Products

Specifications of MAX4232AKA+T

• Amplifier Type: General Purpose
• Number Of Circuits: 2
• Output Type: Rail-to-Rail
• Slew Rate: 10 V/µs
• Gain Bandwidth Product: 10MHz
• Current - Input Bias: 50pA
• Voltage - Input Offset: 850µV
• Current - Supply: 1.2mA
• Current - Output / Channel: 200mA
• Voltage - Supply, Single/dual (±): 2.7 V ~ 5.5 V, ±1.35 V ~ 2.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-8
• Number Of Channels: 2
• Voltage Gain Db: 100 dB
• Common Mode Rejection Ratio (min): 52 dB
• Input Offset Voltage: 6 mV
• Operating Supply Voltage: 3 V, 5 V
• Maximum Power Dissipation: 714 mW
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Maximum Dual Supply Voltage: +/- 2.5 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: MAX4232AKA+T; MAX4232AKA+TTR

To improve step response when R′ > 2kΩ, connect
small capacitor C
put. Choose C
where R
ting resistor (Figure 5).
The MAX4230–MAX4234 have a high tolerance for
capacitive loads. They are stable with capacitive loads
up to 780pF. Figure 6 is a graph of the stable operating
region for various capacitive loads vs. resistive loads.
Figures 7 and 8 show the transient response with
excessive capacitive loads (1500pF), with and without
the addition of an isolation resistor in series with the
output. Figure 9 shows a typical noninverting capaci-
tive-load-driving circuit in the unity-gain configuration.
Figure 5. Inverting and Noninverting Amplifiers with Feedback
Compensation
Rail-to-Rail I/O Op Amps with Shutdown in SC70
V
INVERTING
NONINVERTING
IN
f
is the feedback resistor and R is the gain-set-
R
R
f
as follows:
V
IN
f
______________________________________________________________________________________
between the inverting input and out-
C
f
= 8(R / R
MAX4230
MAX4230
Driving Capacitive Loads
C
R
R
C
f
f
f
f
f
R′ = R || R
R
) [pf]
R′ = R || R
R
f
C
f
C
f
f
= RC
= RC
High-Output-Drive, 10MHz, 10V/µs,
IN
f
IN
f
V
V
OUT
OUT
Figure 6. Capacitive-Load Stability
Figure 7. Small-Signal Transient Response with Excessive
Capacitive Load
Figure 8. Small-Signal Transient Response with Excessive
Capacitive Load with Isolation Resistor
20mV/div
20mV/div
20mV/div
20mV/div
2500
2000
1500
1000
500
0
1
V
R
DD
L
V
R
V
R
TO V
DD
L
DD
L
= 5.0V
= 100kΩ, R
= 100kΩ, R
= 3.0V, C
= 3.0V, C
10
DD
/2
RESISTIVE LOAD (Ω)
L
L
100
ISO
ISO
= 1500pF
STABLE
= 1500pF
1µs/div
1µs/div
= 0Ω
= 39Ω
UNSTABLE
1k
10k
100k
11