MIC7122YMM TR Micrel Inc, MIC7122YMM TR Datasheet - Page 7

• Manufacturer Part Number: MIC7122YMM TR
• Description: Dual CMOS Op Amp -
• Manufacturer: Micrel Inc
• Series: MM8™r

Specifications of MIC7122YMM TR

• Amplifier Type: General Purpose
• Number Of Circuits: 2
• Output Type: Rail-to-Rail
• Slew Rate: 0.5 V/µs
• Gain Bandwidth Product: 420kHz
• Current - Input Bias: 1pA
• Voltage - Input Offset: 500µV
• Current - Supply: 900µA
• Current - Output / Channel: 250mA
• Voltage - Supply, Single/dual (±): 2.2 V ~ 15 V, ±1.1 V ~ 7.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-1317-2

capacitance C
estimating C
Since a significant percentage of C
layout, it is important to note that the correct value of C
change when changing from a breadboard to the final circuit
layout.
Typical Circuits
Some single-supply, rail-to-rail applications for which the
MIC7122 is well suited are shown in the circuit diagrams of
Figures 3 through 7.
June 2005
MIC7122
R
Figure 3b. Noninverting Amplifier Behavior
Figure 2. Cancelling Feedback Phase Lag
IN
Figure 3a. Noninverting Amplifier
C
IN
V
IN
IN
100
IN
V+
and then applying the following formula:
0V to
0
. The value of C
0
R
R
C
FB
IN
V
IN
IN
V +
A
V
C
R1
100k
FB
A
V
910k
V
V+
R2
IN
1
1
(V)
⁄
2
MIC7122
R2
R1
C
R
IN
FB
FB
FB
may be caused by board
10
is determined by first
0V to V+
V
OUT
100
V
OUT
FB
may
7
Figure 5. Voltage-Controlled Current Sink
Figure 7. AC-Coupled Inverting Amplifier
0V to 2V
V
Figure 4. Voltage Follower/Buffer
0.001µF
Figure 6. Square Wave Oscillator
V+
IN
C
IN
V+
Change Q1 and R
for higher current
and/or different gain.
I
33k
OUT
R1
330k
C1
R3
0V to V+
100k
V
R2
IN
V+
V
R
IN
1
S
C1
1µF
⁄
2
R3
100k
MIC7122
330k
R2
100mA/V as shown
V+
0.5V to Q1 V
100k
100k
1
330k
R4
R4
⁄
S
V+
2
R4
V+
MIC7122
1
⁄
2
1
MIC7122
V
⁄
A
2
S
MIC7122
R
10
1
V
⁄
Q1
2N3904
I
2
S
OUT
CEO(sus)
W
V
OUT
0V to V+
C
R2
0V to V+
R1
OUT
V
V
= V
V+
R
0V
OUT
{
OUT
L
V
I
C(max)
IN
CEO
330k
33k
V
V
0V
OUT
OUT
= 40V
= 200mA
10
MIC7122
Micrel