Datasheet MAX4238, MAX4239 (Maxim)
| Manufacturer | Maxim |
| Pages / Page | 9 / 1 — MAX4238/MAX4239. Ultra-Low Offset/Drift, Low-Noise,. Precision SOT23 … |
| File Format / Size | PDF / 1.3 Mb |
| Document Language | English |
MAX4238/MAX4239. Ultra-Low Offset/Drift, Low-Noise,. Precision SOT23 Amplifiers. General Description. Benefits and Features
Text Version of Document
link to page 8
MAX4238/MAX4239 Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 Amplifiers General Description Benefits and Features
The MAX4238/MAX4239 are low-noise, low-drift, ultra- ● DC Performance Ideal for High-Precision Sensor Interface high precision amplifiers that offer near-zero DC offset • Ultra-Low, 0.1µV Offset Voltage and drift through the use of patented autocorrelating • 2.0µV (max) at +25°C zeroing techniques. This method constantly measures • 2.5µV (max) at -40°C to +85°C and compensates the input offset, eliminating drift over • 3.5µV (max) at -40°C to +125°C time and temperature and the effect of 1/f noise. Both • Low 10nV/°C Drift devices feature rail-to-rail outputs, operate from a single • Low Noise: 1.5µVP-P from DC to 10Hz 2.7V to 5.5V supply, and consume only 600µA. An active- • 150dB AVOL, 140dB PSRR, 140dB CMRR low shutdown mode decreases supply current to 0.1µA. • High Gain-Bandwidth Product The MAX4238 is unity-gain stable with a gain-bandwidth • 1MHz (MAX4238) product of 1MHz, while the decompensated MAX4239 • 6.5MHz (MAX4239) is stable with A • Ground-Sensing Input V ≥ 10V/V and a GBWP of 6.5MHz. The MAX4238/MAX4239 are available in 8-pin narrow SO, • Rail-to-Rail Output (RL = 1kΩ) 6-pin TDFN and SOT23 packages. ● Low Power Consumption Reduces System Power • Single 2.7V to 5.5V Supply Voltage Range
Applications
• 600µA Supply Current • 0.1µA Shutdown Mode ● Thermocouples ● Strain Gauges
Pin Configurations appear at end of data sheet.
● Electronic Scales ● Medical Instrumentation ● Instrumentation Amplifiers
Ordering Information Typical Application Circuit PART PIN-PACKAGE TOP MARK MAX4238
AUT-T 6 SOT23 AAZZ 5V MAX4238AUT/V+T 6 SOT23 — MAX4238ASA 8 SO — 18kΩ MAX4238ATT+T 6 TDFN-EP* +ANG 360Ω STRAIN GAUGE
MAX4239
AUT-T 6 SOT23 ABAA ADC AV = 100 AIN MAX4239AUT/V+T 6 SOT23 — MAX4239ASA 8 SO — MAX4239ATT+T 6 TDFN-EP* +ANH 18kΩ MAX4238/ MAX4239
Note:
All devices are specified over the -40°C to +125°C oper- ating temperature range. +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed paddle. /V denotes an automotive-qualified part.
Selector Guide GAIN PART MINIMUM STABLE GAIN BANDWIDTH (MHz)
MAX4238 1V/V 1 MAX4239 10V/V 6.5 19-2424; Rev 6; 9/15
MAX4238/MAX4239 Ultra-Low Offset/Drift, Low-Noise, Precision SOT23 Amplifiers General Description Benefits and Features
The MAX4238/MAX4239 are low-noise, low-drift, ultra- ● DC Performance Ideal for High-Precision Sensor Interface high precision amplifiers that offer near-zero DC offset • Ultra-Low, 0.1µV Offset Voltage and drift through the use of patented autocorrelating • 2.0µV (max) at +25°C zeroing techniques. This method constantly measures • 2.5µV (max) at -40°C to +85°C and compensates the input offset, eliminating drift over • 3.5µV (max) at -40°C to +125°C time and temperature and the effect of 1/f noise. Both • Low 10nV/°C Drift devices feature rail-to-rail outputs, operate from a single • Low Noise: 1.5µVP-P from DC to 10Hz 2.7V to 5.5V supply, and consume only 600µA. An active- • 150dB AVOL, 140dB PSRR, 140dB CMRR low shutdown mode decreases supply current to 0.1µA. • High Gain-Bandwidth Product The MAX4238 is unity-gain stable with a gain-bandwidth • 1MHz (MAX4238) product of 1MHz, while the decompensated MAX4239 • 6.5MHz (MAX4239) is stable with A • Ground-Sensing Input V ≥ 10V/V and a GBWP of 6.5MHz. The MAX4238/MAX4239 are available in 8-pin narrow SO, • Rail-to-Rail Output (RL = 1kΩ) 6-pin TDFN and SOT23 packages. ● Low Power Consumption Reduces System Power • Single 2.7V to 5.5V Supply Voltage Range
Applications
• 600µA Supply Current • 0.1µA Shutdown Mode ● Thermocouples ● Strain Gauges
Pin Configurations appear at end of data sheet.
● Electronic Scales ● Medical Instrumentation ● Instrumentation Amplifiers
Ordering Information Typical Application Circuit PART PIN-PACKAGE TOP MARK MAX4238
AUT-T 6 SOT23 AAZZ 5V MAX4238AUT/V+T 6 SOT23 — MAX4238ASA 8 SO — 18kΩ MAX4238ATT+T 6 TDFN-EP* +ANG 360Ω STRAIN GAUGE
MAX4239
AUT-T 6 SOT23 ABAA ADC AV = 100 AIN MAX4239AUT/V+T 6 SOT23 — MAX4239ASA 8 SO — MAX4239ATT+T 6 TDFN-EP* +ANH 18kΩ MAX4238/ MAX4239
Note:
All devices are specified over the -40°C to +125°C oper- ating temperature range. +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed paddle. /V denotes an automotive-qualified part.
Selector Guide GAIN PART MINIMUM STABLE GAIN BANDWIDTH (MHz)
MAX4238 1V/V 1 MAX4239 10V/V 6.5 19-2424; Rev 6; 9/15
