reading with a 10 mV drop, which
is a 10X lower measurement burden
relative to the original circuit.
If you add the input diode
protection resistor back in, then
you incur only 0.7 mV max
uncompensated offset because of the
TLE2021’s enhanced performance.
If you do this, then there’s really no
reason to keep those diodes — you
can rely on the op-amp’s input pin
protection circuit.
Mike Hardwick
Decade Engineering
Turner, OR
>>>YOUR ELECTRONICS QUESTIONS ANSWERED HERE BY N&V READERS
AMATEUR RADIO
AND TV
National RF...................... 21
BUYING ELECTRONIC
SURPLUS
All Electronics Corp. ........ 81
Earth Computer
Technologies ................... 46
CIRCUIT BOARDS
AP Circuits ...................... 46
Dimension Engineering ... 51
ExpressPCB ................... 65
Front Panel Express LLC ... 40
Saelig Co. Inc. .................. 2
COMPONENTS
All Electronics Corp. ....... 81
COMPUTER
Hardware
Earth Computer
Technologies ................... 46
Microcontrollers /
I/O Boards
MikroElektronika ............... 3
Technologic Systems ...... 59
DATA ACQUISITION
Measurement Computing. 47
DESIGN/ENGINEERING/
REPAIR SERVICES
Cleveland Institute of
Electronics ...................... 52
ExpressPCB ................... 65
Front Panel Express LLC. 40
National RF...................... 21
EDUCATION
Boxed Kit Amps .............. 21
Cleveland Institute of
Electronics ...................... . 52
Command Productions ... 15
littleBits ............................ 67
NKC Electronics ............. 21
Parallax ........................... 52
Poscope .......................... 09
ServoCity ......................... 83
ENCLOSURES
Front Panel Express LLC 40
HALLOWEEN
Skeletons & More ........... 21
HI-FI AUDIO
Boxed Kit Amps .............. 21
KITS & PLANS
Boxed Kit Amps .............. 21
Earth Computer
Technologies ................... 46
littleBits ............................ 67
NKC Electronics ............. 21
Parallax ........................... 52
Qkits ................................ 21
ServoCity ......................... 83
MISC./SURPLUS
All Electronics Corp. ....... 81
Front Panel Express LLC 40
RF TRANSMITTERS/
RECEIVERS
Lemos International ........ 75
National RF...................... 21
ROBOTICS
All Electronics Corp. ........ 81
Cleveland Institute of
Electronics ..................... . 52
littleBits ........................... 67
Parallax ........................... 52
ServoCity ........................ 83
TEST EQUIPMENT
Dimension Engineering ... 51
Measurement Computing 47
NKC Electronics ............. 21
Pico TechnologyBack Cover
Poscope .......................... 09
Saelig Co. Inc. ................... 2
Teledyne LeCroy ............. 35
ZeroPlus Technology ...... 41
TOOLS
MikroElektronika ............... 3
PanaVise ........................ 40
Poscope .......................... 09
All Electronics Corp. ........... 81
AP Circuits .......................... 46
Boxed Kit Amps .................. 21
Cleveland Institute of
Electronics .......................... 52
Command Productions ....... 15
Dimension Engineering ....... 51
Earth Computer Technologies
46
ExpressPCB ....................... 65
Front Panel Express LLC ... 40
Lemos International ............. 75
littleBits ................................ 67
Measurement Computing ... 47
MikroElektronika ................... 3
National RF.......................... 21
NKC Electronics ................. 21
PanaVise ............................ 40
Parallax ............................... 52
Pico Technology ....Back Cover
Poscope .............................. 09
Qkits .................................... 21
Saelig Co., Inc. ..................... 2
ServoCity ............................. 83
Skeletons & More ................ 21
Technologic Systems .......... 59
Teledyne LeCroy ................. 35
ZeroPlus Technology .......... 41
nLOOK FOR nSEARCH FOR nFIND
Find your favorite advertisers here! ADvertiser INDEX
82 October 2015
n FIGURE 2