CS3004 Precision Low-voltage Amplifier Features & Description 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 Offset: – 10 µV Max. 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 Pin Configurations – to within 10 mV of supply voltage CS3004 2.1 mA Supply Current Slew rate: – 0.25 V/µs Out A 1 Applications Exposed Thermal Die Pad2 (Top View) 8 V+ A - + -In A 2 Thermocouple/Thermopile Amplifiers Load Cell and Bridge Transducer Amplifiers Precision Instrumentation Battery-powered Systems 7 Out B B + - +In A 3 V- 4 8 V+ OUT A 1 -IN A 2 6 -In B +IN A 3 5 +In B V- 4 8-Lead SOIC A – + Exposed Thermal Die Pad 7 OUT B B + – 6 -IN B 5 +IN B QFN-8 1. Must not be connected. 2. Connect thermal die pad to V-. 1000 200 150 100 100 50 0 -50 10 -100 -150 -200 1 0.01 0.1 1 10 0 1 Frequency (Hz) 3 4 5 6 7 8 9 10 Time (sec) Noise vs. Frequency (Measured) Cirrus Logic, Inc. http://www.cirrus.com 2 0.01 Hz to 10 Hz Noise Performance 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. 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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 V+ = +5 V, ±5%; V- = 0V; VCM = 2.5 V; Unless otherwise noted, TA = 25º C (See Note 1). Parameter Min Typ Max Unit Input Offset Voltage (Note 2) • - ±2 ±10 µV Average Input Offset Drift (Note 2) • - ±0.01 ±0.05 µV/ºC • - ±170 - ±250 ±1.5 pA nA • - ±340 - ±500 ±3.0 pA nA - 17 17 - nV/ Hz nV/ Hz Input Bias Current Input Offset Current Input Noise Voltage Density RS = 100 Ω, f0 = 1 Hz RS = 100 Ω, f0 = 1 kHz Input Noise Voltage Input Noise Current Density Input Noise Current 0.1 to 10 Hz - 350 - nVp-p f0 = 1 Hz - 100 - fA/ Hz 0.1 to 10 Hz - 1.9 • V- - V+ V Common Mode Rejection Ratio (dc) • 110 120 - dB Power Supply Rejection Ratio • 110 130 - dB RL = 2 kΩ to V+/2 • 120 150 150 - dB dB RL = 2 kΩ to V+/2 (Note 4) RL = 100 kΩ to V+/2 • (V+ – 100) (V+ – 10) - (V- + 100 ) (V- + 10) mV mV 0.25 - V/µs 25 - µs - 2.0 2.5 mA - 150 - kHz - 1.5 10 - pF pF Input Voltage Range (Note 2) Large Signal Voltage Gain (Note 3) Output Voltage Swing Slew Rate RL = 2 k, 100 pF Overload Recovery Time - Supply Current • Oscillator Frequency Input Capacitance Differential Common Mode pAp-p 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 V+ = +3 V, ±10%; V- = 0V; VCM = 1.5 V; Unless otherwise noted, TA = 25º C (See Note 5). Min Typ Max Unit Input Offset Voltage Parameter (Note 6) • - ±2 ±10 µV Average Input Offset Drift (Note 6) • - ±0.01 ±0.05 µV/ºC • - ±110 - ±150 ±1.0 pA nA • - ±220 - ±300 ±2.0 pA nA RS = 100 Ω, f0 = 1 Hz RS = 100 Ω, f0 = 1 kHz - 17 17 - nV/ Hz nV/ Hz 0.1 to 10 Hz - 350 - nVp-p f0 = 1 Hz - 100 - fA/ Hz 0.1 to 10 Hz - 1.9 Input Bias Current Input Offset Current Input Noise Voltage Density Input Noise Voltage Input Noise Current Density Input Noise Current Input Voltage Range (Note 6) pAp-p • V- - V+ V Common Mode Rejection Ratio (dc) • 110 120 - dB Power Supply Rejection Ratio • 110 130 - dB RL = 2 kΩ to V+/2 • 120 160 150 - dB dB RL = 2 kΩ to V+/2 (Note 8) RL = 100 kΩ to V+/2 • (V+ – 100) (V+ – 10) - (V- + 100 ) (V- + 10) mV mV 0.25 - V/µs - 25 - µs - 2.0 2.5 mA - 150 - kHz - 1.5 10 - pF pF Large Signal Voltage Gain (Note 7) Output Voltage Swing Slew Rate RL = 2 k, 100 pF Overload Recovery Time Supply Current • Oscillator Frequency Input Capacitance Differential Common Mode 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 Supply Voltage Parameter Min Typ Max Unit [(V+) – (V-)] 2.7 - 5.5 V (V-) – 0.3 - (V+) + 0.3 V -65 - +150 ºC Input Voltage Storage Temperature Range 2. TYPICAL PERFORMANCE PLOTS 1000 200 150 100 100 50 0 -50 10 -100 -150 1 0.01 0.1 1 -200 10 0 1 2 3 4 Frequency (Hz) Figure 1. Noise vs Frequency (Measured) 180 160 140 120 100 80 60 40 20 0 -20 0.001 0.01 0.1 1 10 100 1k 5 6 7 8 9 10 Time (sec) 10k 100k 1M Figure 2. 0.01 Hz to 10 Hz Noise 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 Frequency (Hz) 1 10 100 1k 10k 100k 1M -45 -90 -135 -180 10M Frequency (Hz) Figure 4. Gain & Phase vs. Frequency (5 V) Figure 3. Gain & Phase vs. Frequency (2.7 V) 2.5 1.9 Supply Current (mA) Supply Current (mA) 2.0 1.8 1.7 1.6 1.5 2.5 3 3.5 4 4.5 5 Supply voltage Figure 5. Supply Current vs. Supply Voltage DS719F1 5.5 2.0 5V 1.5 2.7V 1.0 0.5 -40 -15 10 35 60 85 110 125 Temperature (°C) Figure 6. Supply Current vs. Temperature 5 CS3004 Typical Performance Plots (Cont.) V+ V+ -50 -50 +125°C -40°C -150 +25°C -200 +200 -40°C +150 +25°C +125°C +100 -40°C -150 +25°C -200 +200 -40°C +150 +25°C +125°C +100 +50 V– +125°C -100 Output Voltage (mV) Output Voltage (mV) -100 +50 0 1 2 3 Output Current (mA) 4 V– 5 0 1 2 3 Output Current (mA) 4 5 Figure 8. Voltage Swing vs. Output Current (5 V) Figure 7. Voltage Swing vs. Output Current (2.7 V) 3. PACKAGE DRAWINGS 8L SOIC (150 MIL BODY) PACKAGE DRAWING E H 1 b c D SEATING PLANE ∝ A L e A1 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° 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° JEDEC # : MS-012 6 DS719F1 CS3004 8L QFN (4 mm X 4 mm) PACKAGE DRAWING DS719F1 7 CS3004 4. ORDERING INFORMATION Part # Temperature Range Package Description CS3004-FS -40 °C to +125 °C 8-lead SOIC CS3004-FSZ -40 °C to +125 °C 8-lead SOIC, Lead Free CS3004-FNZ* -40 °C to +125 °C 8-lead QFN, Lead Free * Connect thermal die pad to V-. 5. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION Model Number Peak Reflow Temp CS3004-FS 240 °C MSL Rating* Max Floor Life 2 365 Days CS3004-FSZ 260 °C CS3004-FNZ * MSL (Moisture Sensitivity Level) as specified by IPC/JEDEC J-STD-020. 6. REVISION HISTORY 8 Revision Date Changes PP4 FEB 2007 First public release. F1 AUG 2007 Updated to “Final” per QPL process. DS719F1