www.3peak.com
Rev.A.3
1 / 20
TPA2681 / TPA2682
36V Low Noise Op Amps
Features
Supply Voltage: 8 V to 36 V
Offset Voltage: ±3 mV
Differential Input Voltage Range to Supply Rail,
can Work as Comparator
Bandwidth: 20 MHz, Slew Rate: 10 V/μs
Low Noise:
Voltage Noise Density: 10 nV/Hz at 100 Hz
�� 0.1 to 10 Hz Voltage Noise: 0.8 μV
PP
Input Rail to –V
S
, No Internal ESD Diode to +V
S
High PSRR+: 80 dB at 100 kHz
40°C to 125°C Operation Temperature Range
Applications
Instrumentation
Active Filters, ASIC Input or Output Amplifier
Sensor Interface
Industrial Control
Audio Application
Description
The TPA268X series amplifiers are the newest high-
supply voltage amplifiers with low noise and high-
frequency response. They incorporate 3PEAK’s
proprietary and patented design techniques to
achieve very good AC performance with 20MHz
bandwidth, 10 V/μs slew rate, and low distortion while
drawing only 6mA of quiescent current per amplifier.
The combination of features makes the TPA268X an
ideal choice for industrial control, motor control and
audio amplification, sound ports, and other consumer
audio.
Typical Application Circuit
0
10
20
30
40
50
60
70
80
90
1 100 10K 1M
Voltage Noise(nV/
√Hz)
Frequency(Hz)
50pF
V
OUT
+5V
5.1kΩ
V
IN
www.3peak.com
Rev.A.3
2 / 20
TPA2681 / TPA2682
36V Low Noise Op Amps
Table of Contents
Features .............................................................................................................................................................. 1
Applications ....................................................................................................................................................... 1
Description ......................................................................................................................................................... 1
Typical Application Circuit ................................................................................................................................ 1
Revision History ................................................................................................................................................ 3
Pin Configuration and Functions ..................................................................................................................... 4
Specifications .................................................................................................................................................... 6
Absolute Maximum Ratings
(1)
....................................................................................................................... 6
ESD, Electrostatic Discharge Protection ...................................................................................................... 6
Thermal Information ..................................................................................................................................... 6
Electrical Characteristics .............................................................................................................................. 7
Typical Performance Characteristics ............................................................................................................ 9
Detailed Description ........................................................................................................................................ 13
Overview ..................................................................................................................................................... 13
Functional Block Diagram .......................................................................................................................... 13
Tape and Reel Information .............................................................................................................................. 14
Package Outline Dimensions ......................................................................................................................... 15
SOT23-5 ..................................................................................................................................................... 15
SOP8 .......................................................................................................................................................... 16
TSSOP8 ..................................................................................................................................................... 17
MSOP8 ....................................................................................................................................................... 18
Order Information ............................................................................................................................................ 19
IMPORTANT NOTICE AND DISCLAIMER ....................................................................................................... 20