CS3011
CS3012
Precision Low Voltage Amplifier; DC to 1 kHz
Features
Low Offset: 10 µVMax
Low Drift: 0.05 µV/°C Max
Low Noise
–12nV/√Hz @1.0Hz
– 0.1 to 10 Hz = 250 nVp-p
– 1/f corner @ 0.08 Hz
Open-Loop Voltage Gain
– 1000 Trillion Typ
– 10 Billion Min
Rail-to-Rail Output Swing
750 µA Supply Current
Slew rate: 2 V/µs
Applications
Thermocouple/Thermopile Amplifiers
Load Cell and Bridge Transducer Amplifiers
Precision Instrumentation
Battery-Powered Systems
Description
The CS3011 single amplifier and the CS3012 dual amplifier are designed for precision amplification of low
level signals and are ideally suited to applications that
require very high closed loop gains. These amplifiers
achieve excellent offset stability, super high open loop
gain, and low noise over time and temperature. The devices also exhibit excellent CMRR and PSRR. The
common mode input range includes the negative supply
rail. The amplifiers operate with any total supply voltage
from 2.7 V to 6.7 V (±1.35 V to ±3.35 V).
Pin Configurations
PWDN
-In
+In
CS3011
1
2
3
4
V-
8-lead SOIC
DNC
8
-
+
7
6
5
V+
Output
DNC
Out A
-In A
+In A
CS3012
1
2
3
V-
4
8-lead SOIC
8
V+
A
+
-
7
Out B
B
6
+
-In B
-
5
+In B
Noise vs. Frequency (Measured)
100
10
1
0.001 0.010 0.1 1 10
Frequency (Hz)
Advanced Product Information
Cirrus Logic, Inc.
http://www.cirrus.com
CS3011
Dexter Research
Thermopile ST60
R1
100
Thermopile Amplifier with a Gain of 650 V/V
This document contains advanced information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
CopyrightCirrus Logic, Inc. 2002
(All Rights Reserved)
R2
64.9k
C1
0.015µµµµF
DS597PP1
OCT ‘02
1
1. CHARACTERISTICS AND SPECIFICATIONS
1.1 ELECTRICAL CHARACTERISTICS
CS3011
CS3012
V+=+5V,V-=0V,VCM=2.5V
(Note 1)
CS3011/CS3012
Parameter
UnitMin Typ Max
Input Offset Voltage (Note 2) • --±10 µV
Average Input Offset Drift (Note 2) • -±0.01±0.05 µV/ºC
Long Term Input Offset Voltage Stability (Note 3)
Input Bias Current T
=25ºC
A
•
Input Offset Current T
=25ºC
A
•
Input Noise Voltage Density R
= 100 Ω,f0=1Hz
S
R
= 100 Ω,f0=1kHz
S
Input Noise Voltage 0.1 to 10 Hz - 250 nV
Input Noise Current Density f0=1Hz - 2
Input Noise Current 0.1 to 10 Hz - 40 pA
- ±50 ±100
±1000
- ±100 ±200
±2000
-
-
12
12
pA
pA
nV/ Hz
nV/ Hz
p-p
pA Hz
p-p
Input Common Mode Voltage Range • -0.1 - (V+)-1.25 V
Common Mode Rejection Ratio (dc) (Note 4) • 115 120 - dB
Power Supply Rejection Ratio • 120 136 - dB
Large Signal Voltage Gain R
Output Voltage Swing R
Slew Rate R
=2kΩ to V+/2 (Note 5) • 200 300 - dB
L
=2kΩ to V+/2
L
R
= 100 kΩ to V+/2
L
= 2 k, 100 pF 2 - V/µs
L
• +4.7 +4.99
-V
V
Overload Recovery Time - 600 - µs
Supply Current per Amplifier
PWDN
PWDN
Threshold (Note 6)
active (CS3011 Only) (Note 6)••
• (V+) -1.0
-0.751.015mA
µA
Start-up Time (Note 7) • -912 ms
Notes: 1. Symbol “•” denotes specification applies over -40 to +85
2. This parameter is guaranteed by design and laboratory characterization. Thermocouple effects prohibit
accurate measurement of these parameters in automatic test systems.
3. 1000-hour life test data @ 125 °C indicates randomly distributed variation approximately equal to
measurement repeatability of 1 µV.
4. Measured within the specified common mode range limits.
5. Guaranteed within the output limits of (V+ -0.3 V) to (V- +0.3 V). Tested with proprietary production test
method.
6. PWDN
current consumption when PWDN
input has an internal pullup resistor to V+ of approximately 800 kΩ and is the major source of
is pulled low.
7. The device has a controlled start-up behavior due to its complex open loop gain characteristics. Startup time applies to when supply voltage is applied or when PDWN
2
° C.
is released.
CS3011
CS3012
1.2 ABSOLUTE MAXIMUM RATINGS
Parameter Min Typ Max Unit
Supply Voltage [(V+) - (V-)] 6.8 V
Input Voltage V- -0.3 V+ +0.3 V
Storage Temperature Range -65 +150 ºC
2. ORDERING INFORMATION
Part # Temperature Range Package Description
CS3011-IS -40 °C to +85 °C 8-lead SOIC
CS3012-IS -40 °C to +85 °C 8-lead SOIC
Note: Add the letter R to the Part # to order reels, 2000 pieces per reel.
3. AVAILABILITY
Samples: November 1, 2002
Production: December 1, 2002
3
CS3011
CS3012
Contacting Cirrus Logic Support
For all product questions and inquiries contact a Cirrus Logic Sales Representative.
To find one nearest you go to <http://www.cirrus.com/corporate/contacts/sales.cfm>
IMPORTANT NOTICE
"Preliminary" product information describes products that are in production, but for which full characterization data is not yet available. "Advance" product inf ormation describes products that are i n development and subject to development changes. Cirrus Logic, I nc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the informati on is subject to change without notice and is provided "AS IS" without warranty
of any kind (express or implied). Customers are advised to obtain the latest version of relevant i nformation to verify, before placing orders, that information being
relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those
pertaining to warranty, patent infringement, and limitation of liability. No responsibility i s assumed by Cirrus f or the use of this informati on, i ncludi ng use of this
information as the basis for manufacture or sale of any items, or for i nfringement of patents or other rights of third parties. This document is the property of Cir rus
and by furnishi ng this information, Cirrus grants no license, express or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or
other intellectual property ri ghts. Ci rrus owns the copyrights of the information contained herein and gives consent for copies to be made of the info rmation only
for use within your organization wi th respect to Cirrus integr ated ci rcuits or other parts of Cirrus. This consent does not extend to other copying such as copying
for general distribution, advertising or pr omotional purposes, or for creating any work for resale.
An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technologies described in thismaterial and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. An export li cense and/or quota needs to be
obtained from the competent authorities of the Chinese Government if any of the products or technologies describ ed in this material is subject to the PRC Foreign
Trade Law and i s to be exported or taken out of the PRC.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE
PROPERTY OR ENVIRONMENTAL DAMAGE (" CRITICAL APPLICATIONS") . CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS
IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER'S RISK.
Cirrus Logic, Cirrus, and the Cirrus Logi c logo desi gns are trademarks of Cirrus Logic, Inc. All other brand and product names in this d ocument may be trademarks or service marks of their respective owners.
4
Loading...