Datasheet

254
255
256
257
258
0 10 20 30 40 50 60
V
CC
1.65 V
1.3 V
1.0 V
0.9 V
V – Reference Voltage (TYP = 256 mV)
REF
T – Temperature – °C
A
MSP430L092
MSP430C09x
www.ti.com SLAS673 –SEPTEMBER 2010
A-POOL, External Reference Source
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
CC
= 0.9 V to 1.65 V, ADC / DAC operational 100 275 mV
V
REF
V
CC
= 0.9 V to 1.65 V, ADC / DAC not operational 0 V
CC
V
I
REF(Input)
V
CC
= 0.9 V to 1.65 V, load to external sinks 3 µA
C
REF
REFON = 0 20 50 pF
A-POOL, Built-In Reference Source
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
REF
V
CC
= 0.9 V to 1.65 V (±1.5%, overall 3%) 256 mV
I
REF
V
CC
= 0.9 V to 1.65 V 10 µA
C
REF
REFON = 1 20 50 pF
ppm/
T
REF
V
CC
= 0.9 V to 1.65 V (ΔV/ΔT × V
REF
referenced to 25°C) ±250
°C
t
SETTLE
V
CC
= 0.9 V to 1.65 V, REFON = 1, C
REF
= C
REF
(max)
(1)
900
(1)
µs
I
REF(Output)
V
CC
= 0.9 V to 1.65 V, REFON = 1, C
REF
= C
REF
(max) 2 µA
(1) As the actual on reference enable signal is synchronized with the LF oscillator.
Typical Characteristics – A-POOL Built-In Reference Source
VOLTAGE vs TEMPERATURE
Figure 15.
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