CS3001-ISZR Cirrus Logic Inc, CS3001-ISZR Datasheet

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CS3001-ISZR

Manufacturer Part Number
CS3001-ISZR
Description
IC OPAMP SGL PREC LOW-V 8-SOIC
Manufacturer
Cirrus Logic Inc
Datasheet

Specifications of CS3001-ISZR

Amplifier Type
Instrumentation
Number Of Circuits
1
Output Type
Rail-to-Rail
Slew Rate
5 V/µs
Current - Input Bias
100pA
Voltage - Input Offset
10µV
Current - Supply
2.1mA
Voltage - Supply, Single/dual (±)
2.7 V ~ 6.7 V, ±1.35 V ~ 3.35 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC
For Use With
598-1495 - BOARD EVAL OPAMP FOR CS30XX
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Output / Channel
-
-3db Bandwidth
-
Gain Bandwidth Product
-
Features
Applications
http://www.cirrus.com
Low Offset: 10 μV Max
Low Drift: 0.05 μV/°C Max
Low Noise
– 6 nV/√Hz @ 0.5 Hz
– 0.1 to 10 Hz = 125 nVp-p
– 1/f corner @ 0.08 Hz
Open-loop Voltage Gain
– 300 dB Typical
– 200 dB Minimum
Rail-to-rail Output Swing
Slew Rate: 5 V/μs
Thermocouple/Thermopile Amplifiers
Load Cell and Bridge Transducer Amplifiers
Precision Instrumentation
Battery-powered Systems
100
10
1
0.001
Precision Low-voltage Amplifier; DC to 2 kHz
& Description
Noise vs. Frequency (Measured)
0.01
Frequency (Hz)
0.1
Copyright  Cirrus Logic, Inc. 2009
1
(All Rights Reserved)
10
Description
The CS3001 single amplifier and the CS3002 dual am-
plifier 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 de-
vices 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
V-
Dexter Research
Thermopile 1M
1
2
3
4
8-lead SOIC
CS3001
-
+
Thermopile Amplifier with a Gain of 650 V/V
100
R1
8
7
6
5
NC
V+
Output
NC
Out A
+In A
-In A
V-
CS3001
1
2
3
4
CS3001
CS3002
8-lead SOIC
CS3002
-
0.015μF
64.9k
A
R2
C1
+
+
B
-
DS490F9
JUL ‘09
8
7
6
5
V+
Out B
-In B
+In B

Related parts for CS3001-ISZR

CS3001-ISZR Summary of contents

Page 1

... Frequency (Hz) http://www.cirrus.com Description The CS3001 single amplifier and the CS3002 dual am- plifier 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 ...

Page 2

... Figure 12. Input Bias Current vs. Common Mode Voltage ................................................7 Figure 13. Voltage Swing vs. Output Current (2.7 V) .........................................................7 Figure 14. Voltage Swing vs. Output Current (5 V) ............................................................7 Figure 15. CS3001/CS3002 Open-loop Gain and Phase Response .................................8 Figure 16. Non-inverting Gain Configuration .....................................................................9 Figure 17. Non-inverting Gain Configuration with Compensation ....................................10 Figure 18. Loop Gain Plot: Unity Gain and with Pole-zero Compensation ......................11 Figure 19 ...

Page 3

... 100 pF L Overload Recovery Time Supply Current PWDN active (CS3001 Only) PWDN Threshold Start-up Time 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. ...

Page 4

... Figure 1. Noise vs. Frequency (Measured) 100 50 0 -50 -100 TIME (Sec) Figure 3. 0. Noise 3 2.5 6 1.5 2 -40 - Temperature (°C) Figure 5. Supply Current vs. Temperature, CS3001 4 1000 100 1 10 100 -25 -50 - -100 Figure 4. Offset Voltage Stability (DC to 3.2 Hz) 4.5 4.0 3.5 3.0 2.5 2.0 -40 40 ...

Page 5

... Typical Performance Plots (Cont.) 2 1.9 1.8 1.7 1.6 1 Supply Voltage (V) Figure 7. Supply Current vs. Voltage, CS3001 500 400 300 200 100 0 -100 -200 -300 -400 -500 1 DS490F9 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3 Figure 8. Supply Current vs. Voltage, CS3002 10 100 1k Frequency (Hz) Figure 9 ...

Page 6

... Typical Performance Plots (Cont.) Figure 10. Open-loop Gain and Phase vs. Frequency (Expanded) 6 100 -45 -90 -135 -180 -225 -270 -315 -360 10K 100K Figure 11. Input Bias Current vs. Supply Voltage CS3001 CS3002 10M 1M DS490F9 ...

Page 7

... Common Mode Voltage (Vs = 5V) Figure 12. Input Bias Current vs. Common Mode Voltage V+ -50 -100 -40°C -150 -200 -250 +250 +125°C +200 +150 -40°C +100 +50 V– Figure 14. Voltage Swing vs. Output Current (5 V) CS3001 CS3002 -40°C +125°C +125° Output Current (mA) -40° ...

Page 8

... Open-loop Gain and Phase Response Figure 15 illustrates the open loop gain and phase response of the CS3001/CS3002. The gain slope of the amplifier is about –100 dB/decade between 500 Hz and 60 kHz and transitions to –20 dB/de- cade between 60 kHz and its unity gain crossover frequency at about 4.8 MHz. Phase margin at unity gain is about 70 degrees ...

Page 9

... Open-loop Gain and Stability Compensation 3.2.1 Discussion The CS3001 and CS3002 achieve ultra-high open loop gain. Figure 16 illustrates the amplifier in a non-inverting gain configuration. The open loop gain and phase plots indicate that the amplifier is stable for closed-loop gains less than 50 V/V and R1 ≤ ...

Page 10

... 2π 2π ----------------------------------- where 1 ( × )C 2π ------------------------ - 2π some gain higher than 0 dB (typically 20 dB) at the hand-over frequency (the frequency at which the slope changes from – 100 dB/decade to –20 dB/decade • for R » ----- - R 1 CS3001 CS3002 DS490F9 ...

Page 11

... As the closed loop gain is changed, the zero location is also modified if R1 remains fixed. Capacitor C2 can be increased in value to limit the amplifier’s rising noise above 2 kHz. -100 dB/dec -80 dB/dec X Margin Desired Closed -20 dB/dec Loop Gain 50kHz 1MHz 5MHz FREQUENCY CS3001 CS3002 ) ...

Page 12

... Powerdown (PDWN) The CS3001 single amplifier provides a power- down function on pin 1. If this pin is left open the amplifier will operate normally. If the powerdown is asserted low, the amplifier will go into a low power state. There is a pull-up resistor (approxi- mately 800 kΩ ...

Page 13

... Applications The CS3001 and CS3002 amplifiers are optimum for applications that require high gain and low drift. Figure 19 illustrates a thermopile amplifier with a gain of 650 V/V. The thermopile outputs only a few millivolts when subjected to infrared radiation. The amplifier is compensated and bandlimited combination with R2 ...

Page 14

... JEDEC #: MS-012 CS3001 CS3002 ∝ L MILLIMETERS MIN MAX 1.35 1.75 0.10 0.25 0.33 0.51 0.19 0.25 4.80 5.00 3.80 4.00 1.02 1.52 5 ...

Page 15

... ORDERING INFORMATION Model CS3001-ISZ (lead free) CS3002-ISZ (lead free) 6. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION Model Number CS3001-ISZ (lead free) CS3002-ISZ (lead free) * MSL (Moisture Sensitivity Level) as specified by IPC/JEDEC J-STD-020. DS490F9 Temperature -40 to +85 °C Peak Reflow Temp MSL Rating* 260 °C CS3001 ...

Page 16

... Added MSL specifications. Updated legal notice. Added leaded (Pb) devices. Updated Typical Performance Plots. Corrected error in Ordering Information section. Added additional information regarding open-loop and gain stability compensation. Minor, cosmetic correction to caption for Figure 10. Removed lead-containing devices from ordering information. www.cirrus.com CS3001 CS3002 Changes DS490F9 ...

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