Datasheet LT6650 (Analog Devices) - 7
| Manufacturer | Analog Devices |
| Description | Micropower, 400mV Reference with Rail-to-Rail Buffer Amplifier in SOT-23 |
| Pages / Page | 12 / 7 — PI FU CTIO S. FB (Pin 1):. IN (Pin 4):. OUT (Pin 5):. GND (Pin 2):. DNC … |
| File Format / Size | PDF / 458 Kb |
| Document Language | English |
PI FU CTIO S. FB (Pin 1):. IN (Pin 4):. OUT (Pin 5):. GND (Pin 2):. DNC (Pin 3):. BLOCK DIAGRA. APPLICATIO S I FOR ATIO
Model Line for this Datasheet
Text Version of Document
LT6650
U U U PI FU CTIO S FB (Pin 1):
Resistor Divider Feedback Pin. Connect a
IN (Pin 4):
Positive Supply. Bypassing with a 1µF capacitor resistor divider from OUT to GND and the center tap to FB. is recommended if the output loading changes. This pin sets the output potential.
OUT (Pin 5):
Reference Output. The output sources and
GND (Pin 2):
Ground Connection. sinks current. It is stable with any load capacitor with a
DNC (Pin 3):
Do not connect. Connected internally for post total capacitance of 1µF or more. Higher load capacitance package trim. This pin must be left unconnected. improves load transient response.
W BLOCK DIAGRA
IN 4 LT6650 VR = 400mV + REFERENCE 5 OUT – DNC 3 1 FB 2 6650 BD GND
U U W U APPLICATIO S I FOR ATIO Long Battery Life
functions. Output impedance can be reduced by DC load- ing of the output by 40µA to 200µA, and/or adding an R The LT6650 is a micropower, adjustable reference which Z to the output capacitor for a 100µs time constant as shown operates from supply voltages ranging from 1.4V to 18V. in Figure 1 and the Typical Performance Characteristics The series regulated output may be configured with exter- graphs. nal resistors to any voltage from 400mV to nearly the supply potential. Under no-load conditions, the LT6650 The LT6650 Voltage reference should have an input by- dissipates only 8µW when operating on a 1.4V supply. pass capacitor of 0.1µF or larger. When the circuit is Other operating configurations allow the LT6650 to be used as a micropower positive or negative adjustable R shunt reference from 1.4V to 18V. IN IN OUT V 4 5 V IN OUT
Bypass and Load Capacitor
CIN LT6650 CL FB 1 The LT6650 voltage reference requires a 1µF or greater RZ output capacitance for proper operation. This capacitance 2 6650 F01 GND may be provided by either a single capacitor connected between OUT and GND or formed by the aggregate of several capacitors that may be serving other decoupling
Figure 1. LT6650 Input-Output Configuration
6650fa 7
U U U PI FU CTIO S FB (Pin 1):
Resistor Divider Feedback Pin. Connect a
IN (Pin 4):
Positive Supply. Bypassing with a 1µF capacitor resistor divider from OUT to GND and the center tap to FB. is recommended if the output loading changes. This pin sets the output potential.
OUT (Pin 5):
Reference Output. The output sources and
GND (Pin 2):
Ground Connection. sinks current. It is stable with any load capacitor with a
DNC (Pin 3):
Do not connect. Connected internally for post total capacitance of 1µF or more. Higher load capacitance package trim. This pin must be left unconnected. improves load transient response.
W BLOCK DIAGRA
IN 4 LT6650 VR = 400mV + REFERENCE 5 OUT – DNC 3 1 FB 2 6650 BD GND
U U W U APPLICATIO S I FOR ATIO Long Battery Life
functions. Output impedance can be reduced by DC load- ing of the output by 40µA to 200µA, and/or adding an R The LT6650 is a micropower, adjustable reference which Z to the output capacitor for a 100µs time constant as shown operates from supply voltages ranging from 1.4V to 18V. in Figure 1 and the Typical Performance Characteristics The series regulated output may be configured with exter- graphs. nal resistors to any voltage from 400mV to nearly the supply potential. Under no-load conditions, the LT6650 The LT6650 Voltage reference should have an input by- dissipates only 8µW when operating on a 1.4V supply. pass capacitor of 0.1µF or larger. When the circuit is Other operating configurations allow the LT6650 to be used as a micropower positive or negative adjustable R shunt reference from 1.4V to 18V. IN IN OUT V 4 5 V IN OUT
Bypass and Load Capacitor
CIN LT6650 CL FB 1 The LT6650 voltage reference requires a 1µF or greater RZ output capacitance for proper operation. This capacitance 2 6650 F01 GND may be provided by either a single capacitor connected between OUT and GND or formed by the aggregate of several capacitors that may be serving other decoupling
Figure 1. LT6650 Input-Output Configuration
6650fa 7
