MAX4208 Maxim, MAX4208 Datasheet
MAX4208
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MAX4208 Summary of contents
Page 1
... The MAX4208/MAX4209 provide high-impedance inputs optimized for small-signal differential voltages (±100mV). All devices provide a gain-bandwidth product of 750kHz. The MAX4208 provides an adjustable gain with two external resistors or unity gain with FB connected to OUT. The MAX4209 is available with a fixed gain of 100V/V with ±0.03% (typ) accuracy. Both devices include a reference input (REF) to level-shift the output, allowing for bipolar signals in single-supply applications ...
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... MAX4208 100V/V -20mV ≤ V ≤ +20mV DIFF MAX4209H 100V/V MAX4208 100V/V MAX4209H 100V/V V Guaranteed by CMRR test CM CMRR 0.1V 1.30V / 0V, MAX4208 set for DD DIFF IN+ IN- MIN TYP MAX ±3 ±20 ±3 ± 0.05 ±0.25 0.05 ±0.25 25 150 ...
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... OUT OUT SS R Source I SC Sink GBW MAX4208 1V/V BW MAX4209H, G =100V/V SR MAX4208 1V/ 100mV step OUT / 0V, MAX4208 set for DD DIFF IN+ IN- MIN TYP MAX = CM 100 125 ±10 ± ...
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... 0V, MAX4208 set for DD DIFF IN+ IN- MIN TYP MAX 10 120 200 2.5 140 20 20 2.85 5. 0.75 1. 1.40 2.30 DD 1.4 5.0 / 0V, MAX4208 set for DD DIFF IN+ IN- MIN TYP MAX ±45 ±60 ±30 ±40 0.1 ±0.45 0.1 ±0.45 0.01 ±0.17 0.01 ±0. 0.30 0.35 0.30 0.35 UNITS µs pF µV P-P nV/√ ...
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... REF 0.5V +125° +25°C to +85° -40°C to +125°C A Reference buffer is ON, guaranteed by REFIN/MODE CMRR test V Reference buffer is OFF IL / 0V, MAX4208 set for DD DIFF IN+ IN- MIN TYP MAX 50 180 50 180 210 700 210 700 ...
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... Note 3: IN+ and IN- are gates to CMOS transistors with typical input bias current of 1pA. CMOS leakage is so small that it is impractical to test and guarantee in production. Max V units. For the MAX4208, when there are no external resistors, the input bias current at FB and REF is 1pA (typ). Note 4: Setting REF to ground ( allowed if the REF buffer is off ...
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... A A -30 6 INPUT COMMON-MODE VOLTAGE (V) GAIN vs. FREQUENCY - 100 1k 10k 100k FREQUENCY (Hz) / 0V, MAX4208 set for DD DIFF IN+ IN- GAIN ACCURACY HISTOGRAM +100V -0.15 -0.10 -0.05 0 0.05 0.10 GAIN ACCURACY (%) INPUT OFFSET VOLTAGE vs ...
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... REFIN/MODE 5.0 4.0 3 +25° +125° 2.0 1 3.5 4.0 4.5 5.0 5.5 2.5 V ( 0V, MAX4208 set for DD DIFF IN+ IN- MAX4208/9 toc11 1.2μV/div 1s/div SUPPLY CURRENT (BUFFER OFF) vs. SUPPLY VOLTAGE 1000 REFIN/MODE +125°C 900 A 800 700 600 T = +25° -40°C ...
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... A = 1000V 2mV STEP IN )/2 IN- REF REFIN/MODE SS / 0V, MAX4208 set for DD DIFF IN+ IN- LARGE-SIGNAL PULSE RESPONSE TIME MAX4208/9 toc18 2.5V 2.5V 400μs/div A = 100V 10mV STEP IN )/2 IN- REF DD SS ...
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... Output Reference Level. REF sets the OUT voltage for zero differential input. The internal buffer 5 REF sets the voltage at REF when the voltage at REFIN/MODE is between V Feedback Input. Connect FB to the center tap of an external resistive divider from OUT to REF to set the gain for the MAX4208. MAX4209 FB is internally connected to gain-setting resistors. Connect optional capacitor ...
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... The MAX4209 has a factory-trimmed gain of 100V/V. The MAX4208 has an adjustable gain, set with an external pair of resistors between OUT, FB, and REF (Figure 1). The MAX4208/MAX4209 have an output reference input (REF) that is connected to an external reference for bipo- lar operation of the device ...
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... I to 750µA and puts the REFIN DD buffer output in a high-impedance state to allow exter- nal direct drive of REF. To put the MAX4208/MAX4209 into shutdown and reduce the supply current to less than 5µA, drive REFIN/MODE Note: When driving REF directly, REFIN/MODE must and shutdown mode is NOT available ...
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... Instrumentation Amplifiers with REF Buffer Applications Information Setting the Gain (MAX4208) Connect a resistive divider from OUT to REF with the cen- ter tap connected set the gain for the MAX4208 (see the Typical Application Circuit). Calculate the gain using the following formula: ⎛ ...
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... For noisy digital environments, the use of multilayer PCB with separate ground and power-supply planes is recommended. Keep digital signals far away from the sensitive analog inputs. Refer to the MAX4208 or MAX4209 Evaluation Kit data sheets for good layout examples. 14 ______________________________________________________________________________________ V ...
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... 10A x 0.002Ω = 20mV SENSE POWER 10A x 20mV = 200mW SENSE OUT = G x 20mV = 100 x 20mV = 10A Figure 5. MAX4208/MAX4209 Used as Precision Current-Sense Amplifiers for Notebook Computers with ______________________________________________________________________________________ Ultra-Low Offset/Drift, Precision MAX4209H gain error is 0.25% max at 100x, so the total accuracy is greatly improved ...
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... Instrumentation Amplifiers with REF Buffer TOP VIEW Chip Information TRANSISTOR COUNT: 2335 PROCESS: BiCMOS 16 ______________________________________________________________________________________ + REFIN/MODE IN OUT MAX4208 MAX4209 IN REF SS μMAX For the latest package outline information www.maxim-ic.com/package. PACKAGE TYPE 8 µMAX Pin Configuration ...
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... Removed future products 1 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 17 © ...