MICREL MIC820

MIC820
Micrel
MIC820
Teeny™ Ultra Low Power Op Amp
Final Information
General Description
Features
The MIC820 is a rail-to-rail output, operational amplifier in
Teeny™ SC70 packaging. The MIC820 provides 5MHz, -3dB
bandwidth while consuming an incredibly low 22µA supply
current.
The SC70 packaging achieves significant board space savings over devices packaged in SOT-23 or MSOP-8 packaging. The SC70 occupies approximately half the board area of
a SOT-23 package.
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•
•
•
•
•
•
•
Teeny™ SC70 packaging
5MHz, –3dB bandwidth product
4MHz gain-bandwidth product
22µA supply current
Rail-to-Rail output
Ground sensing at input common mode to GND
Common mode to GND
Drive large capactive loads
Applications
• Portable equipment
Ordering Information
Part Number
Marking Junction Temp. Range*
MIC820BC5
A25
Pin Configuration
–40°C to +85°C
Package
SC70-5
Functional Pinout
IN–
V–
IN+
3
2
1
Part
Identification
IN–
V–
IN+
3
2
1
A25
4
5
OUT
V+
4
5
OUT
V+
SC-70
Teeny is a trademark of Micrel, Inc.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
December 2000
1
MIC820
MIC820
Micrel
Absolute Maximum Ratings (Note 1)
Operating Ratings (Note 2)
Supply Voltage (VV+ – VV–) ........................................ +6.0V
Differentail Input Voltage (VIN+ – VIN–) ................. +6.0lV
Input Voltage (VIN+ – VIN–) .............. VV+ + 0.3V, VV– –0.3V
Lead Temperature (soldering, 5 sec.) ....................... 260°C
Output Short Circuit Current Duration .................. Indefinite
Storage Temperature (TS) ........................................ 150°C
ESD Rating, Note 3
Supply Voltage (VS) ................................ +4.75V to +5.25V
Ambient Temperature Range ..................... –40°C to +85°C
Package Thermal Resistance ............................... 450°C/W
Electrical Characteristics (0V to 5V)
VV+ = +5V, VV– = 0V, VCM = V+/2; RL = 1MΩ; TA = 25°C, bold values indicate –40°C ≤ TA ≤ +85°C; unless noted.
Symbol
Parameter
VOS
Condition
Min
Typ
Max
Units
Input Offset Voltage
1
15
mV
Input Offset Voltage Temp Coefficient
13
µV/°C
IB
Input Bias Current
IOS
Input Offset Current
VCM
Input Voltage Range
CMRR > 35dB
0
CMRR
Common-Mode Rejection Ratio
0 < VCM < 2.5V
35
50
dB
PSRR
Power Supply Rejection Ratio
Note 5
40
70
dB
AVOL
Large-Signal Voltage Gain
RL = 1M, –0.5 < VOUT < 3.5V
60
72
dB
VOUT
Maximum Output Voltage Swing
RL = 200k
4.95
5
V
VOUT
Minimum Output Voltage Swing
RL = 200k
0
50
mV
BW
–3db Bandwidth
5
MHz
GBW
Gain-Bandwidth Product
4
MHz
SR
Slew Rate
5
V/µs
ISC
Short-Circuit Output Current
2
2.85
mA
0.15
0.26
mA
Source
Sink
IGND
Supply Current
0.165
5
nA
0.1
5
nA
VCC-2.5
V
VCC = ±2.5V, VOUT = 0V
22
35
µA
VCC = ±2.5V, VOUT = –2.5V
35
60
µA
Note 1.
Exceeding the absolute maximum rating may damage the device.
Note 2.
The device is not guaranteed to function outside its operating rating.
Note 3.
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. Pin 4 is ESD sensetive
Note 4.
Exceeding the maximum differential input voltage will damage the input stage and degrade performance (in particular, input bias current is
likely to increase.
Note 5.
Supply Voltage change of 1V.
MIC820
2
December 2000
MIC820
Micrel
Typical Characteristics
Offset Voltage
vs. Temperature
74
73
1.5
-1.0
-1.5
-2.0
-40 -20 0
20 40 60
TEMPERATURE (°C)
80
MIC820 + PSRR
vs. Frequency
40
30
25
20
15
30
20
10
0
1x102
0
-40 -20 0
20 40 60
TEMPERATURE (°C)
1x106
1x105
1x104
40
10
5
1x103
1x102
20
50
30
CMRR (dB)
BIS CURRENT (pA)
PSRR (dB)
50
80
60
35
60
5
MIC820 Common Mode
Rejection Ratio
40
70
10
0
-40 -20 0
20 40 60
TEMPERATURE (°C)
80
Bias Current
vs. Temperature
80
15
80
FREQUENCY (Hz)
1x106
66
65
-40 -20 0
20 40 60
TEMPERATURE (°C)
0.0
-0.5
20
1x105
68
67
0.5
25
1x104
70
69
1.0
1x103
72
71
Supply Current
vs. Temperature
30
SUPPLY CURRENT (µA)
2.0
OFFSET VOLTAGE (mV)
OPEN LOOP GAIN
Open Loop Gain
vs. Temperature
75
FREQUENCY (Hz)
INPUT OFFSET VOLTAGE (mV)
+10
0
2.5
2.5
85°C
20°C
2.5
-40°C
–10
2.5
4.0
SUPPLY VOLTAGE (V)
December 2000
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MIC820
MIC820
Micrel
Functional Characteristics
Small-Signal Pulse Reponse
AV=1 CL=3pF
Small-Signal Pulse Reponse
AV=1 CL=100pF
+50
+50
0
0
VOUT
(mV)
+100
VOUT
(mV)
+100
-50
-50
-100
-100
0
400
800
1200
1600
2000
(ns)
2400
2800
3200
3600
4000
0
4
Large-Signal Pulse Reponse
AV=1 CL=10pF
8
12
16
20
(µs)
24
28
32
36
40
Gain Bandwidth of MIC820
+20
+10
+100
0
0
–10
–20
PHASE (°)
GAIN (dB)
VOUT
(mV)
+50
0
–30
-50
–90
–40
-100
–50
–180
0
4
8
12
16
20
(µs)
24
28
32
36
100
40
10k
100k
FREQUENCY (Hz)
1k
10M
Closed Loop Gain (AV = +1)
vs. Load Capacitance
Closed Loop Frequency Response AV = 1
+15
–10
+10
–20
+5
–30
0
–40
–50
GAIN (dB)
0
PHASE (°)
GAIN (dB)
1M
–90
0
–5
470pF
0.1µF
0.01µF
1000pF
100pF
3pF
–10
–60
–15
–180
1k
10k
100k
1M
10M
1k
FREQUENCY (Hz)
MIC820
10k
100k
1M
10M
FREQUENCY (Hz)
4
December 2000
MIC820
Micrel
Applications Information
Power Supply Bypassing
Regular supply bypassing techniques are recommended. A
10µF capacitor in parallel with a 0.1µF capacitor on both the
positive and negative supplies are ideal. For best performance all bypassing capacitors should be located as close to
the op amp as possible and all capacitors should be low ESL
(equivalent series inductance), ESR (equivalent series resistance). Surface-mount ceramic capacitors are ideal.
December 2000
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MIC820
MIC820
Micrel
Package Information
0.65 (0.0256) BSC
1.35 (0.053) 2.40 (0.094)
1.15 (0.045) 1.80 (0.071)
2.20 (0.087)
1.80 (0.071)
DIMENSIONS:
MM (INCH)
1.00 (0.039) 1.10 (0.043)
0.80 (0.032) 0.80 (0.032)
0.10 (0.004)
0.00 (0.000)
0.30 (0.012)
0.15 (0.006)
0.18 (0.007)
0.10 (0.004)
0.30 (0.012)
0.10 (0.004)
SC70-5
MICREL INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131
TEL
+ 1 (408) 944-0800
FAX
+ 1 (408) 944-0970
WEB
USA
http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or
other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc.
© 2000 Micrel Incorporated
MIC820
6
December 2000