Cirrus Logic CS3014 User Manual

7/29/09

CS3014

8-Lead SOIC

(Top View)

Out A

-In A

+In A

V-

V+

Out B

-In B

+In B

A

B

-

-

+

+

1
2
3
4

8
7
6
5

Noise vs. Frequency (Measured)

0.01 Hz to 10 Hz Noise Performance

1

10

100

1000

0.01 0.1 1 10

Frequency (Hz)

-300

-200

-100

0

100

200

300

012345678910

Time (sec)

CS3014

Low-power / Low-voltage Precision Amplifier

Features & Description

 Low Offset:

–10 μV Typ.

Low Drift:



–0.05 μV/°C Max.

Low Noise:



– 22 nV/√Hz

 Open-loop Voltage Gain:

– 135 dB Typ.

Rail-to-Rail Inputs



 Rail-to-Rail Output Swing

– to within 20 mV of supply voltage

1.0 mA Supply Current



 Slew rate:

–0.25 V/μs

Applications

 Thermocouple/Thermopile Amplifiers
 Load Cell and Bridge Transducer Amplifiers
 Precision Instrumentation
 Battery-powered Systems

Description

The CS3004 dual amplifier is designed for precision am­plification of low-level signals. These amplifiers achieve
excellent offset stability, high open loop gain, and low
noise. The devices also exhibit excellent CMRR and
PSRR. The common mode input range includes the sup­ply rails. The amplifiers operate with any supply voltage
from 2.7 V to 5 V (±1.35 V to ±2.50 V).

Pin Configurations

Cirrus Logic, Inc.

http://www.cirrus.com

Copyright  Cirrus Logic, Inc. 2009

(All Rights Reserved)

JUL ‘09

DS711F2

7/29/09

TABLE OF CONTENTS

1. CHARACTERISTICS AND SPECIFICATIONS ............................................. 3

1.1 5 V Electrical Characteristics ................................................................... 3

1.2 3 V Electrical Characteristics ................................................................... 4

1.3 Absolute Maximum Ratings ..................................................................... 5

2. TYPICAL PERFORMANCE PLOTS ............... ............................................... 5

3. PACKAGE DRAWINGS ................................................................................. 6

4. ORDERING INFORMATION .......................................................................... 8

5. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION ... 8

6. REVISION HISTORY ..................................................................................... 9

LIST OF FIGURES

Figure 1. Noise vs. Frequency (Measured) ................................................................................5

Figure 2. 0.01 Hz to 10 Hz Noise ...............................................................................................5

Figure 3. Gain & Phase vs. Frequency (2.7 V) ...........................................................................5

Figure 4. Gain & Phase vs. Frequency (5 V) ..............................................................................5

Figure 5. Supply Current vs. Supply Voltage ..............................................................................5

Figure 6. Supply Current vs. Temperature .................................................................................5

Figure 7. Voltage Swing vs. Output Current (2.7 V) ...................................................................6

Figure 8. Voltage Swing vs. Output Current (5 V) ......................................................................6

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nV/ Hz

nV/ Hz

fA/ Hz

CS3014

1. CHARACTERISTICS AND SPECIFICATIONS

1.1 5 V Electrical Characteristics

V+ = +5 V,

Input Offset Voltage (Note 2) • -±10±20µV
Average Input Offset Drift (Note 2) • -±0.01±0.05µV/ºC
Input Bias Current

Input Offset Current

Input Noise Voltage Density R

Input Noise Volt age 0.1 to 10 Hz - 460 - nV
Input Noise Current Density f0 = 1 Hz - 100 -

Input Noise Current 0.1 to 10 Hz - 1.9 - pA
Input Voltage Range (Note 2) • V- - V+ V
Common Mode Rejection Ratio (dc) • 105 120 - dB
Power Supply Rejection Ratio • 100 120 - dB
Large Signal Voltage Gain

(Note 3)R
Output Voltage Swing R

(Note 4)R
Slew Rate R
Overload Recovery Time - 40 - µs

Supply Current • - 1.0 1.25 mA
Oscillator Frequency - 125 - kHz
Input Capacitance Differential

Common Mode

±5%;

V- = 0V; VCM = 2.5 V; Unless otherwise noted,

Parameter Min Typ Max Unit

= 100 Ω, f0 = 1 Hz

S

R

= 100 Ω, f0 = 1 kHz

S

= 2 kΩ to V+/2 •

L

= 2 kΩ to V+/2

L

= 100 kΩ to V+/2

L

L

TA = 25º C (See Note 1).

-

•

-

-

•

-

-

-

-

112

• (V+ – 200)
(V+ – 20)

±170

-

±340

-

22
22

145
135

-

-

±250

±1.5

±500

±3.0

-

-

-

-

(V- + 200)

(V- + 20)

pA
nA

pA
nA

p-p

p-p

dB
dB

mV
mV

= 2 k, 100 pF - 0.25 - V/µs

-

-

1.5
10

-

-

pF
pF

Notes: 1. Symbol “•” denotes specification applies over -40 to +125

° C.

2. This parameter is guaranteed by design and/or laboratory characterization.

3. Guaranteed within the output limits of (V+ – 0.2 V) to (V- + 0.2 V).

4. Specifies the worst case drive voltage relative to the supply rail under stated load conditions.

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nV/ Hz

nV/ Hz

fA/ Hz

CS3014

1.2 3 V Electrical Characteristics

V+ = +3 V,

Input Offset Voltage (Note 6) • -±10±20µV
Average Input Offset Drift (Note 6) • -±0.01±0.05µV/ºC
Input Bias Current

Input Offset Current

Input Noise Voltage Density R

Input Noise Volt age 0.1 to 10 Hz - 460 - nV
Input Noise Current Density f0 = 1 Hz - 100 -

Input Noise Current 0.1 to 10 Hz - 1.9 - pA
Input Voltage Range (Note 6) • V- - V+ V
Common Mode Rejection Ratio (dc) • 105 120 - dB
Power Supply Rejection Ratio • 100 120 - dB
Large Signal Voltage Gain

(Note 7)R
Output Voltage Swing R

(Note 8)R
Slew Rate R
Overload Recovery Time - 40 - µs

Supply Current • - 1.0 1.25 mA
Oscillator Frequency - 125 - kHz
Input Capacitance Differential

Common Mode

±10%;

V- = 0V; VCM = 1.5 V; Unless otherwise noted,

Parameter Min Typ Max Unit

= 100 Ω, f0 = 1 Hz

S

= 100 Ω, f0 = 1 kHz

R

S

= 2 kΩ to V+/2 •

L

= 2 kΩ to V+/2

L

= 100 kΩ to V+/2

L

= 2 k, 100 pF - 0.25 - V/µs

L

TA = 25º C (See Note 5).

-

•

-

-

•

-

-

-

-

112

• (V+ – 200)
(V+ – 20)

-

-

±1 10

-

±220

-

22
22

145
135

-

-

1.5
10

±150

±1.0

±300

±2.0

-

-

-

-

(V- + 200)

(V- + 20)

-

-

pA
nA

pA
nA

p-p

p-p

dB
dB

mV
mV

pF
pF

Notes: 5. Symbol “•” denotes specification applies over -40 to +125

° C.

6. This parameter is guaranteed by design and laboratory characterization.

7. Guaranteed within the output limits of (V+ – 0.2 V) to (V- + 0.2 V).

8. Specifies the worst case drive voltage relative to the supply rail under stated load conditions.

4 DS711F2

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Figure 1. Noise vs. Frequency (Measured)

1

10

100

1000

0.01 0.1 1 10

Frequency (Hz)

-20

0

20

40

60

80

100

120

140

160

180

Gain (dB)

-135

-90

-45

0

45

90

135

180

225

270

Phase (Deg.)

Frequency (Hz)

0.001 0.1 10 1k 100k 10M0.01 1 100 10k 1M

-180

Figure 3. Gain & Phase vs. Frequency (2.7 V)

Figure 5. Supply Current vs. Supply Voltage

Figure 2. 0.01 Hz to 10 Hz Noise

-300

-200

-100

0

100

200

300

012345678910

Time (sec)

-20

0

20

40

60

80

100

120

140

160

180

Frequency (Hz)

Gain (dB)

-180

-135

-90

-45

0

45

90

135

180

225

270

Phase (Deg.)

0.001 0.1 10 1k 100k 10M0.01 1 100 10k 1M

Figure 4. Gain & Phase vs. Frequency (5 V)

0.5

1.0

1.5

2.0

2.5

-40 -15 10 35 60 85 110

125

Temperature (°C)

Supply Current (mA)

5V

2.7V

Figure 6. Supply Current vs. Temperature

CS3014

1.3 Absolute Maximum Ratings

Parameter Min T yp Max Unit

Supply Voltage [(V+) – (V-)] 2.7 - 5.5 V
Input Voltage (V-) – (0.3) - (V+) + (0.3) V
Storage Temperature Range -65 - +150 ºC

2. TYPICAL PERFORMANCE PLOTS

1.00

0.95

0.90

0.85

Supply Current (mA)

0.80

2.533.544.555.5

Supply Voltage

DS711F2 5

Typical Performance Plots (Cont.)

-200

-150

-100

-50

V+

V–

+50

+100

+150

+200

01234 5

Output Current (mA)

Output Voltage (mV)

-40°C

+25°C

+125°C

-40°C

+25°C

+125°C

Figure 7. Voltage Swing vs. Output Current (2.7 V)

Figure 8. Voltage Swing vs. Output Current (5 V)

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CS3014

V+

-50

-100

-150

-200

+200

+150

Output Voltage (mV)

+100

+50

V–

01234 5

-40°C

+125°C

+25°C

+25°C

-40°C

+125°C

Output Current (mA)

6 DS711F2

3. PACKAGE DRAWINGS

8L SOIC (150 MIL BODY) PACKAGE DRAWING

D

H

E

e

b

A1

A

c

L

∝

SEATING

PLANE

1

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CS3014

INCHES MILLIMETERS

DIM MIN MAX MIN MAX

A 0.053 0.069 1.35 1.75

A1 0.004 0.010 0.10 0.25

B 0.013 0.020 0.33 0.51
C 0.007 0.010 0.19 0.25
D 0.189 0.197 4.80 5.00
E 0.150 0.157 3.80 4.00

e 0.040 0.060 1.02 1.52
H 0.228 0.244 5.80 6.20

L 0.016 0.050 0.40 1.27

∝

0° 8° 0° 8°

JEDEC # : MS-012

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CS3014

4. ORDERING INFORMATION

Part # Temperature Range Package Description

CS3014-FSZ -40 °C to +125 °C 8-lead SOIC, Lead Free

5. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION

Model Number Peak Reflow Temp MSL Rating* Max Floor Life

CS3014-FSZ 260 °C 2 365 Days

* MSL (Moisture Sensitivity Level) as specified by IPC/JEDEC J-STD-020.

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6. REVISION HISTORY

Revision Date Changes

A1 FEB 2007 First public release.
F1 AUG 2007 Updated to “Final” per QPL process.
F2 JUL 2009 Removed lead-containing SOIC & QFN packages from ordering information.

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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

IMPORTANT NOTICE
Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subject

to change without not ice and is provi ded "AS IS" wi thout warran ty of any kind (express or implied). Customers are advised to obtain the latest version of relevant
information 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 acknowle dgment, including tho se pertaining to warra nty, indemnification, and l imitation of liability. No responsibility is assumed by Cirrus
for the use of this information, including use of this inform ation as the b asis for ma nufacture or sale of any item s, or for infringement of patents or other rights of third
parties. This document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights,
copyrights, trademarks, trade secrets or other intellectual p roperty rights. Cirrus owns the copyr ights associated with the information con tained herein and gives con­sent for copies to be made of the information only for use within your organization with respect to Cirrus inte grated circu its or other products of Cirrus. This consent
does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale.

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 FOR USE
IN PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, AUTOMO TIVE SAFETY OR SECU RITY DEVICES, LIFE SUPPO RT PRODUCTS OR OTHE R CRIT­ICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER'S RISK AND
CIRRUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY
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Cirrus Logic, Cirrus, and the Cirrus Logic logo de sign s are tra dem arks of Cirru s Log ic, Inc. All other br and a nd pro duct na me s in this document m ay be tradem arks
or service marks of their respective owners.

CS3014

10 DS711F2