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MIC820
Micrel
MIC820
TeenyTM Ultra Low Power Op Amp
Final Information
General Description
The MIC820 is a rail-to-rail output, operational amplifier in TeenyTM SC70 packaging. The MIC820 provides 5MHz, -3dB bandwidth while consuming an incredibly low 22A 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.
Features
* * * * * * * *
TeenyTM SC70 packaging 5MHz, -3dB bandwidth product 4MHz gain-bandwidth product 22A 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 MIC820BC5 Marking Junction Temp. Range* A25 -40C to +85C Package SC70-5
Pin Configuration
IN-
3
Functional Pinout
V-
2
IN+
1
IN-
V-
2
IN+
1
Part Identification
3
A25
4 5
4 5
OUT
V+
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)
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.) ....................... 260C Output Short Circuit Current Duration .................. Indefinite Storage Temperature (TS) ........................................ 150C ESD Rating, Note 3
Operating Ratings (Note 2)
Supply Voltage (VS) ................................ +4.75V to +5.25V Ambient Temperature Range ..................... -40C to +85C Package Thermal Resistance ............................... 450C/W
Electrical Characteristics (0V to 5V)
VV+ = +5V, VV- = 0V, VCM = V+/2; RL = 1M; TA = 25C, bold values indicate -40C TA +85C; unless noted. Symbol VOS IB IOS VCM CMRR PSRR AVOL VOUT VOUT BW GBW SR ISC IGND Parameter Input Offset Voltage Input Offset Voltage Temp Coefficient Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing Minimum Output Voltage Swing -3db Bandwidth Gain-Bandwidth Product Slew Rate Short-Circuit Output Current Source Sink Supply Current VCC = 2.5V, VOUT = 0V VCC = 2.5V, VOUT = -2.5V
Note 1. Note 2. Note 3. Note 4. Note 5. Exceeding the absolute maximum rating may damage the device. The device is not guaranteed to function outside its operating rating. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. Pin 4 is ESD sensetive Exceeding the maximum differential input voltage will damage the input stage and degrade performance (in particular, input bias current is likely to increase. Supply Voltage change of 1V.
Condition
Min
Typ 1 13 0.165 0.1
Max 15
Units mV V/C
5 5 VCC-2.5
nA nA V dB dB dB V mV MHz MHz V/s mA mA A A
CMRR > 35dB 0 < VCM < 2.5V Note 5 RL = 1M, -0.5 < VOUT < 3.5V RL = 200k RL = 200k
0 35 40 60 4.95 0 50 70 72 5 50 5 4 5 2 0.15 2.85 0.26 22 35
35 60
MIC820
2
December 2000
MIC820
Micrel
Typical Characteristics
Open Loop Gain vs. Temperature
75
OFFSET VOLTAGE (mV)
Offset Voltage vs. Temperature
2.0
SUPPLY CURRENT (A)
Supply Current vs. Temperature
30 25 20 15 10 5 0 -40 -20 0 20 40 60 TEMPERATURE (C) 80
OPEN LOOP GAIN
74 73 72 71 70 69 68 67 66 65 -40 -20 0 20 40 60 TEMPERATURE (C)
1.5 1.0 0.5 0.0 -0.5 -1.0 -1.5 -2.0 -40 -20 0 20 40 60 TEMPERATURE (C) 80
80
MIC820 + PSRR vs. Frequency
80 70
BIS CURRENT (pA)
Bias Current vs. Temperature
40 35 30 25 20 15 10 5
CMRR (dB)
MIC820 Common Mode Rejection Ratio
60 50 40 30 20 10
1x102 1x103 1x104 1x105
PSRR (dB)
60 50 40 30
1x102 1x103 1x104 1x105 1x106
80
FREQUENCY (Hz)
FREQUENCY (Hz)
+10
INPUT OFFSET VOLTAGE (mV)
0 2.5 2.5 2.5 85C 20C -40C
-10 2.5 SUPPLY VOLTAGE (V) 4.0
December 2000
3
1x106
20
0 -40 -20 0 20 40 60 TEMPERATURE (C)
0
MIC820
MIC820
Micrel
Functional Characteristics
Small-Signal Pulse Reponse AV=1 CL=3pF Small-Signal Pulse Reponse AV=1 CL=100pF
+100
+100
+50
+50
VOUT (mV)
-50
VOUT (mV)
0
0
-50
-100
-100
0
400
800
1200
1600
2000 (ns)
2400
2800
3200
3600
4000
0
4
8
12
16
20 (s)
24
28
32
36
40
Large-Signal Pulse Reponse AV=1 CL=10pF
+20 +10
+100
Gain Bandwidth of MIC820
0
GAIN (dB) PHASE ()
10M
+50
-10 -20 -30 -40 -90 0
VOUT (mV)
0
-50
-100
-50
-180
0 4 8 12 16 20 (s) 24 28 32 36 40
100
1k
10k 100k FREQUENCY (Hz)
1M
10M
Closed Loop Frequency Response AV = 1
Closed Loop Gain (AV = +1) vs. Load Capacitance
0 -10
+15 +10
GAIN (dB)
-30 -40 -50 -60
0
PHASE ()
GAIN (dB)
-20
+5 0 -5 -10 -15
0.1F 0.01F 1000pF 470pF 100pF 3pF
-90
-180
1k
10k
100k FREQUENCY (Hz)
1M
10M
1k
10k
100k FREQUENCY (Hz)
1M
MIC820
4
December 2000
MIC820
Micrel
Applications Information
Power Supply Bypassing Regular supply bypassing techniques are recommended. A 10F capacitor in parallel with a 0.1F 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
5
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) 0.18 (0.007) 0.10 (0.004)
0.30 (0.012) 0.15 (0.006)
0.10 (0.004) 0.00 (0.000)
0.30 (0.012) 0.10 (0.004)
SC70-5
MICREL INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131
TEL
USA
+ 1 (408) 944-0800
FAX
+ 1 (408) 944-0970
WEB
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. (c) 2000 Micrel Incorporated
MIC820
6
December 2000

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