Datasheet MAX6133 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | 3ppm/°C, Low-Power, Low-Dropout Voltage Reference |
| Pages / Page | 13 / 10 — 3ppm/°C, Low-Power, Low-Dropout Voltage Reference. Pin Description. PIN. … |
| File Format / Size | PDF / 523 Kb |
| Document Language | English |
3ppm/°C, Low-Power, Low-Dropout Voltage Reference. Pin Description. PIN. NAME. FUNCTION. MAX6133. Applications Information
Model Line for this Datasheet
Text Version of Document
3ppm/°C, Low-Power, Low-Dropout Voltage Reference Pin Description PIN NAME FUNCTION
1, 3, 7 N.C. No Connection. Not connected internally. Leave unconnected or connect to GND. 2 IN Positive Power-Supply Input 4 GND Ground 5, 8 I.C. Internally Connected. Do not connect externally.
MAX6133
6 OUT Reference Output Voltage. Connect a 0.1µF minimum capacitor to GND.
Applications Information Turn-On Time
These devices typically turn on and settle to within
Bypassing/Load Capacitance
0.01% of their final value in <1ms. The turn-on time can For the best line-transient performance, decouple the increase up to 2ms with the device operating at the input with a 0.1µF ceramic capacitor as shown in the minimum dropout voltage and the maximum load. Typical Operating Circuit. Place the capacitor as close to IN as possible. When transient performance is less
Low-Power, 14-Bit DAC
important, no capacitor is necessary. The MAX6133
with MAX6133 as a Reference
family requires a minimum output capacitance of 0.1µF Figure 1 shows a typical application circuit for the for stability and is stable with capacitive loads (includ- MAX6133 providing both the power supply and precision ing the bypass capacitance) of up to 100µF. In applica- reference voltage for a 14-bit high-resolution, serial- tions where the load or the supply can experience step input, voltage-output digital-to-analog converter. The changes, a larger output capacitor reduces the amount MAX6133 with a 2.5V output provides the reference volt- of overshoot (undershoot) and improves the circuit’s age for the DAC. transient response. Place output capacitors as close to the device as possible.
Supply Current
The quiescent supply current of the MAX6133 series reference is typically 40µA and is virtually independent 3V SUPPLY of the supply voltage. In the MAX6133 family, the load current is drawn from the input only when required, so supply current is not wasted and efficiency is maxi- mized at all input voltages. This improved efficiency IN VDD reduces power dissipation and extends battery life. When the supply voltage is below the minimum-speci- MAX6133 2.5V MAX5143 OUT REF fied input voltage (as during turn-on), the devices can ANALOG draw up to 150µA beyond the nominal supply current. OUTPUT The input voltage source must be capable of providing GND GND this current to ensure reliable turn-on.
Thermal Hysteresis
Thermal hysteresis is the change in the output voltage at TA = +25°C before and after the device is cycled over its entire operating temperature range. Hysteresis is caused by differential package stress appearing across the bandgap core transistors. The typical ther- Figure 1. 14-Bit High-Resolution DAC and Positive Reference mal hysteresis value is 120ppm for both SO and µMAX From a Single 3V Supply packages.
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1, 3, 7 N.C. No Connection. Not connected internally. Leave unconnected or connect to GND. 2 IN Positive Power-Supply Input 4 GND Ground 5, 8 I.C. Internally Connected. Do not connect externally.
MAX6133
6 OUT Reference Output Voltage. Connect a 0.1µF minimum capacitor to GND.
Applications Information Turn-On Time
These devices typically turn on and settle to within
Bypassing/Load Capacitance
0.01% of their final value in <1ms. The turn-on time can For the best line-transient performance, decouple the increase up to 2ms with the device operating at the input with a 0.1µF ceramic capacitor as shown in the minimum dropout voltage and the maximum load. Typical Operating Circuit. Place the capacitor as close to IN as possible. When transient performance is less
Low-Power, 14-Bit DAC
important, no capacitor is necessary. The MAX6133
with MAX6133 as a Reference
family requires a minimum output capacitance of 0.1µF Figure 1 shows a typical application circuit for the for stability and is stable with capacitive loads (includ- MAX6133 providing both the power supply and precision ing the bypass capacitance) of up to 100µF. In applica- reference voltage for a 14-bit high-resolution, serial- tions where the load or the supply can experience step input, voltage-output digital-to-analog converter. The changes, a larger output capacitor reduces the amount MAX6133 with a 2.5V output provides the reference volt- of overshoot (undershoot) and improves the circuit’s age for the DAC. transient response. Place output capacitors as close to the device as possible.
Supply Current
The quiescent supply current of the MAX6133 series reference is typically 40µA and is virtually independent 3V SUPPLY of the supply voltage. In the MAX6133 family, the load current is drawn from the input only when required, so supply current is not wasted and efficiency is maxi- mized at all input voltages. This improved efficiency IN VDD reduces power dissipation and extends battery life. When the supply voltage is below the minimum-speci- MAX6133 2.5V MAX5143 OUT REF fied input voltage (as during turn-on), the devices can ANALOG draw up to 150µA beyond the nominal supply current. OUTPUT The input voltage source must be capable of providing GND GND this current to ensure reliable turn-on.
Thermal Hysteresis
Thermal hysteresis is the change in the output voltage at TA = +25°C before and after the device is cycled over its entire operating temperature range. Hysteresis is caused by differential package stress appearing across the bandgap core transistors. The typical ther- Figure 1. 14-Bit High-Resolution DAC and Positive Reference mal hysteresis value is 120ppm for both SO and µMAX From a Single 3V Supply packages.
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