CS3004

CS3004 Precision Low-voltage Amplifier Features & Description Low Offset: – 10 µV Max. 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). Low Drift: – 0.05 µV/°C Max. Low Noise: – 17 nV/√Hz Open-loop Voltage Gain: – 150 dB Typ. Rail-to-Rail Inputs Rail-to-Rail Output Swing – to within 10 mV of supply voltage Pin Configurations 2.1 mA Supply Current Slew rate: – 0.25 V/µs Out A 1 -In A 2 +In A 3 V- 4 A -+ B +- CS3004 (Top View) 8 V+ 7 Out B 6 -In B 5 +In B OUT A 1 -IN A 2 +IN A 3 V- 4 A –+ Exposed Thermal Die Pad Exposed Thermal Die Pad2 8 V+ 7 OUT B 6 -IN B 5 +IN B Applications Thermocouple/Thermopile Amplifiers Load Cell and Bridge Transducer Amplifiers Precision Instrumentation Battery-powered Systems B +– 8-Lead SOIC 1. Must not be connected. 2. Connect thermal die pad to V-. QFN-8 1000 200 150 100 100 50 0 10 -50 -100 -150 1 0.01 -200 0.1 1 10 0 1 2 3 4 5 6 7 8 9 10 Frequency (Hz) Time (sec) Noise vs. Frequency (Measured) 0.01 Hz to 10 Hz Noise Performance Cirrus Logic, Inc. http://www.cirrus.com Copyright © Cirrus Logic, Inc. 2007 (All Rights Reserved) AUG ‘07 DS719F1 CS3004 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. PERFORMANCE PLOTS ............................................................................... 5 3. PACKAGE DRAWINGS ................................................................................. 7 4. ORDERING INFORMATION .......................................................................... 9 5. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION ... 9 LIST OF FIGURES Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Noise vs Frequency (Measured) .................................................................................5 0.01 Hz to 10 Hz Noise ................................................................................................5 Gain & Phase vs. Frequency (2.7 V)............................................................................5 Gain & Phase vs. Frequency (5 V) ..............................................................................5 Supply Current vs. Supply Voltage ..............................................................................5 Supply Current vs. Temperature .................................................................................5 Voltage Swing vs. Output Current (2.7 V) ...................................................................6 Voltage Swing vs. Output Current (5 V) .......................................................................6 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 notice and is provided "AS IS" without warranty 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 acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus for the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third parties. 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Cirrus Logic, Cirrus, and the Cirrus Logic logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners. 2 DS719F1 CS3004 1. CHARACTERISTICS AND SPECIFICATIONS 1.1 5 V Electrical Characteristics Parameter Input Offset Voltage Average Input Offset Drift Input Bias Current • Input Offset Current • Input Noise Voltage Density Input Noise Voltage Input Noise Current Density Input Noise Current Input Voltage Range Common Mode Rejection Ratio (dc) Power Supply Rejection Ratio Large Signal Voltage Gain (Note 3) Output Voltage Swing Slew Rate Overload Recovery Time Supply Current Oscillator Frequency Input Capacitance Differential Common Mode • RL = 2 kΩ to V+/2 RS = 100 Ω, f0 = 1 Hz RS = 100 Ω, f0 = 1 kHz 0.1 to 10 Hz f0 = 1 Hz 0.1 to 10 Hz (Note 2) • • • • • (Note 2) (Note 2) • • Min V110 110 120 (V+ – 100) (V+ – 10) Typ ±2 ±0.01 ±170 ±340 17 17 350 100 1.9 120 130 150 150 0.25 25 2.0 150 1.5 10 V+ (V- + 100 ) (V- + 10) 2.5 Max ±10 ±0.05 ±250 ±1.5 ±500 ±3.0 Unit µV µV/ºC pA nA pA nA nV/ Hz nV/ Hz V+ = +5 V, ±5%; V- = 0V; VCM = 2.5 V; Unless otherwise noted, TA = 25º C (See Note 1). nVp-p fA/ Hz - pAp-p V dB dB dB dB mV mV V/µs µs mA kHz pF pF RL = 2 kΩ to V+/2 (Note 4) RL = 100 kΩ to V+/2 RL = 2 k, 100 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. DS719F1 3 CS3004 1.2 3 V Electrical Characteristics Parameter Input Offset Voltage Average Input Offset Drift Input Bias Current • Input Offset Current • Input Noise Voltage Density Input Noise Voltage Input Noise Current Density Input Noise Current Input Voltage Range Common Mode Rejection Ratio (dc) Power Supply Rejection Ratio Large Signal Voltage Gain (Note 7) Output Voltage Swing Slew Rate Overload Recovery Time Supply Current Oscillator Frequency Input Capacitance Differential Common Mode • RL = 2 kΩ to V+/2 RS = 100 Ω, f0 = 1 Hz RS = 100 Ω, f0 = 1 kHz 0.1 to 10 Hz f0 = 1 Hz 0.1 to 10 Hz (Note 6) • • • • • (Note 6) (Note 6) • • Min V110 110 120 (V+ – 100) (V+ – 10) Typ ±2 ±0.01 ±110 ±220 17 17 350 100 1.9 120 130 160 150 0.25 25 2.0 150 1.5 10 V+ (V- + 100 ) (V- + 10) 2.5 Max ±10 ±0.05 ±150 ±1.0 ±300 ±2.0 Unit µV µV/ºC pA nA pA nA nV/ Hz nV/ Hz V+ = +3 V, ±10%; V- = 0V; VCM = 1.5 V; Unless otherwise noted, TA = 25º C (See Note 5). nVp-p fA/ Hz - pAp-p V dB dB dB dB mV mV V/µs µs mA kHz pF pF RL = 2 kΩ to V+/2 (Note 8) RL = 100 kΩ to V+/2 RL = 2 k, 100 pF Notes: 5. Symbol “•” denotes specification applies over -40 to +125 ° C. 6. This parameter is guaranteed by design and/or 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 DS719F1 CS3004 1.3 Absolute Maximum Ratings Parameter Supply Voltage Input Voltage Storage Temperature Range [(V+) – (V-)] Min 2.7 (V-) – 0.3 -65 Typ Max 5.5 (V+) + 0.3 +150 Unit V V ºC 2. TYPICAL PERFORMANCE PLOTS 1000 200 150 100 100 50 0 10 -50 -100 -150 1 0.01 0.1 1 10 -200 0 1 2 3 4 5 6 7 8 9 10 Frequency (Hz) Time (sec) Figure 1. Noise vs Frequency (Measured) Figure 2. 0.01 Hz to 10 Hz Noise 180 160 140 120 100 80 60 40 20 0 -20 0.001 0.01 0.1 1 10 100 1k 10k 100k 1M 270 225 180 135 90 45 0 -45 -90 -135 -180 10M 180 160 140 120 100 80 60 40 20 0 -20 0.001 0.01 270 225 180 135 90 45 0 0.1 1 10 100 1k 10k 100k 1M -45 -90 -135 -180 10M Frequency (Hz) Frequency (Hz) Figure 3. Gain & Phase vs. Frequency (2.7 V) Figure 4. Gain & Phase vs. Frequency (5 V) 2.0 Supply Current (mA) Supply Current (mA) 1.9 1.8 1.7 1.6 1.5 2.5 3 3.5 4 4.5 5 5.5 2.5 2.0 1.5 1.0 0.5 -40 5V 2.7V -15 10 35 60 85 110 125 Supply voltage Temperature (°C) Figure 5. Supply Current vs. Supply Voltage Figure 6. Supply Current vs. Temperature DS719F1 5 CS3004 Typical Performance Plots (Cont.) V+ -50 -100 V+ +125°C -40°C -50 -100 +125°C -40°C Output Voltage (mV) -150 -200 Output Voltage (mV) +25°C -150 -200 +25°C +200 +150 +100 +50 V– -40°C +25°C +200 +150 +100 +50 -40°C +25°C +125°C +125°C 0 1 Output Current (mA) 2 3 4 5 V– 0 1 Output Current (mA) 2 3 4 5 Figure 7. Voltage Swing vs. Output Current (2.7 V) Figure 8. Voltage Swing vs. Output Current (5 V) 3. PACKAGE DRAWINGS 8L SOIC (150 MIL BODY) PACKAGE DRAWING E H 1 b c D SEATING PLANE e A1 A L ∝ INCHES DIM A A1 B C D E e H L MIN 0.053 0.004 0.013 0.007 0.189 0.150 0.040 0.228 0.016 0° MAX 0.069 0.010 0.020 0.010 0.197 0.157 0.060 0.244 0.050 8° JEDEC # : MS-012 6 ∝ 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 5.80 6.20 0.40 1.27 0° 8° DS719F1 CS3004 8L QFN (4 mm X 4 mm) PACKAGE DRAWING DS719F1 7 CS3004 4. ORDERING INFORMATION Part # CS3004-FS CS3004-FSZ CS3004-FNZ* * Connect thermal die pad to V-. Temperature Range -40 °C to +125 °C -40 °C to +125 °C -40 °C to +125 °C Package Description 8-lead SOIC 8-lead SOIC, Lead Free 8-lead QFN, Lead Free 5. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION Model Number CS3004-FS CS3004-FSZ 260 °C CS3004-FNZ Peak Reflow Temp 240 °C 2 365 Days MSL Rating* Max Floor Life * MSL (Moisture Sensitivity Level) as specified by IPC/JEDEC J-STD-020. 6. REVISION HISTORY Revision PP4 F1 Date FEB 2007 AUG 2007 First public release. Updated to “Final” per QPL process. Changes 8 DS719F1