参数资料
型号: MSP430F439IPN
厂商: TEXAS INSTRUMENTS INC
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, RISC MICROCONTROLLER, PQFP80
封装: GREEN. PLASTIC, LQFP-80
文件页数: 29/67页
文件大小: 1105K
代理商: MSP430F439IPN
MSP430F43x
MIXED SIGNAL MICROCONTROLLER
SLAS713 -- JUNE 2010
35
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
12-bit ADC, built-in reference
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
Positive built-in reference
REF2_5V = 1 for 2.5 V
IVREF+max ≤ IVREF+≤ IVREF+min
VCC =3V
2.4
2.5
2.6
V
VREF+
Positive built in reference
voltage output
REF2_5V = 0 for 1.5 V
IVREF+max ≤ IVREF+≤ IVREF+min
VCC =2.2 V/3V
1.44
1.5
1.56
V
AVCC minimum voltage,
REF2_5V = 0, IVREF+max ≤ IVREF+≤ IVREF+min
2.2
AVCC(min)
AVCC minimum voltage,
Positive built-in reference
REF2_5V = 1, IVREF+min ≥ IVREF+≥ --0.5mA
2.8
V
AVCC(min)
Positive built in reference
active
REF2_5V = 1, IVREF+min ≥ IVREF+≥ --1mA
2.9
V
I
Load current out of VREF+
VCC =2.2 V
0.01
--0.5
mA
IVREF+
Load current out of VREF+
terminal
VCC =3V
0.01
--1
mA
IVREF+ = 500 A +/-- 100 A
Analog input voltage 0 75 V;
VCC =2.2 V
±2
LSB
I
Load-current regulation
Analog input voltage ~0.75 V;
REF2_5V = 0
VCC =3V
±2
LSB
IL(VREF)+
Load current regulation
VREF+ terminal
IVREF+ = 500 A ± 100 A
Analog input voltage ~1.25 V;
REF2_5V = 1
VCC =3V
±2
LSB
I
Load current regulation
IVREF+ =100 A → 900 A,
C
5 F ax 0 5 x V
V
3 V
20
ns
IDL(VREF) +
Load current regulation
VREF+ terminal
CVREF+=5 F, ax ~0.5 x VREF+
Error of conversion result ≤ 1LSB
VCC =3 V
20
ns
CVREF+
Capacitance at pin VREF+
(see Note 1)
REFON =1,
0mA ≤ IVREF+ ≤ IVREF+max
VCC =2.2 V/3V
5
10
F
TREF+
Temperature coefficient of
built-in reference
IVREF+ is a constant in the range of
0mA ≤ IVREF+ ≤ 1mA
VCC =2.2 V/3V
±100 ppm/°C
tREFON
Settle time of internal
reference voltage (see
Figure 18 and Note 2)
IVREF+ =0.5 mA,CVREF+ =10 F,
VREF+ =1.5 V, VAVCC =2.2 V
17
ms
NOTES: 1. The internal buffer operational amplifier and the accuracy specifications require an external capacitor. All INL and DNL tests uses
two capacitors between pins VREF+ and AVSS and VREF--/VeREF-- and AVSS:10 F tantalum and 100 nF ceramic.
2. The condition is that the error in a conversion started after tREFON is less than ±0.5 LSB. The settling time depends on the external
capacitive load.
CVREF+
1 F
0
1ms
10 ms
100 ms
tREFON
tREFON ≈ .66xCVREF+ [ms] with CVREF+ in F
100 F
10 F
Figure 18. Typical Settling Time of Internal Reference tREFON vs External Capacitor on VREF+
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