mic7201 Micrel Semiconductor, mic7201 Datasheet

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mic7201

Manufacturer Part Number
mic7201
Description
Mic7201 Gainblock? Difference Amplifier
Manufacturer
Micrel Semiconductor
Datasheet
General Description
The MIC7201 difference amplifier is an analog gain block
designed to convert a differential signal to a signal-ended
signal. It features an extended common-mode range that
includes rail-to-rail input/output capabilities. The part is pack-
aged in the SOT-23-5 IttyBitty™ package.
The MIC7201 is designed using the MIC7101 operational
amplifier plus well-matched monolithic resistors to provide a
unity-gain stable differential input to signal-ended output
amplifier that requires a minimum of external components.
Performance is guaranteed from 2.2V through 10V.
Block Diagram
GainBlock is a trademark of Micrel, Inc.
December 1998
MIC7201
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
IN+
IN–
3
4
MIC7201
50k
50k
100k
100k
V+
V–
2
5
50k
OUT
1
1
Features
• Operates from 2.2V to 10V
• 0.6mA typical supply current at 2.2V
• 400kHz bandwidth
• Small SOT-23-5 package
• Suitable for driving capacitive loads
Applications
• Cellular telephones
• Digital audio systems
• Mobile communications
• Portable computers and PDAs
Ordering Information
Other voltages available. Contact Micrel for details.
The desired 100mV, 400Hz differential sinusoidal signal is shown applied to
inputs V
imposed on both V
These signals demonstrate the noise cancellation ability of the MIC7201.
The output (V
400Hz sine wave.
Part Number
MIC7201BM5
V
1% typical gain error
V
V
OUT
IN–
IN+
IN–
GainBlock™ Difference Amplifier
and V
OUT
Difference Amplifier Behavior
) shows the recovered single-ended 200mV peak-to-peak,
IN+
IN–
. A 500mV, 5kHz square-wave “noise” signal is super-
and V
Final Information
Temperature Range
–40 C to +85 C
MIC7201
IN+
.
SOT-23-5
Package
MIC7201
Micrel

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mic7201 Summary of contents

Page 1

... V OUT 50k 5 The desired 100mV, 400Hz differential sinusoidal signal is shown applied to inputs V IN– imposed on both V These signals demonstrate the noise cancellation ability of the MIC7201. The output (V 400Hz sine wave. 1 MIC7201 GainBlock™ Difference Amplifier Final Information Temperature Range – +85 C ...

Page 2

... MIC7201 Pin Configuration Pin Description Pin Number Pin Name 1 OUT IN+ 4 IN– 5 V– MIC7201 IN+ V+ OUT Part Identification A16 4 5 IN– V– SOT-23-5 Pin Function Amplifier Output: Single-ended output. Positive Supply: Positive power supply input. Noniverting Input: In-phase differential input. ...

Page 3

... Note 3 ........... +85 C J(max) ), Note 4.......... 325 C +85 C; unless noted J Min Typ Max 1. 400 0.5 0.02 0.02 30 0.6 2.0 Micrel to V V– V+ Units kHz MIC7201 ...

Page 4

... Input Offset Voltage Temp. Drift OS R Input Resistance IN CMRR Common-Mode Rejection Ratio PSRR Split-Supply Rejection Ratio +PSRR Single-Supply Rejection Ratio, Note 8 E Gain Error, Note 9 G MIC7201 = bold values indicate – Condition – OUT ...

Page 5

... Micrel Min Typ Max Units 120 120 200 mA 250 kHz 0 0. 1.2 4 +85 C; unless noted J Min Typ Max Units 0. 1.0 pA 0.5 pA > –0 +0 the junction-to-ambient thermal J(max) MIC7201 ...

Page 6

... Driving a capacitive load introduces phase-lag into the output signal, and this in turn reduces system phase margin. The application that is least forgiving of reduced phase margin is a unity gain amplifier. The MIC7201 typically can drive a 500pF capacitive load connected directly to its output. V SUPPLY 4.7µ ...

Page 7

... MIC7201 Package Information 1.90 (0.075) REF 0.95 (0.037) REF 3.02 (0.119) 2.80 (0.110) 0.50 (0.020) 0.35 (0.014) December 1998 1.75 (0.069) 3.00 (0.118) 1.50 (0.059) 2.60 (0.102) DIMENSIONS: MM (INCH) 1.30 (0.051) 0.90 (0.035 0.15 (0.006) 0.60 (0.024) 0.00 (0.000) 0.10 (0.004) SOT-23-5 (M5) 7 Micrel 0.20 (0.008) 0.09 (0.004) MIC7201 ...

Page 8

... 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. MIC7201 + 1 (408) 944-0970 http://www ...

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