參數(shù)資料
型號(hào)： MSP430FG438IPN
廠商： TEXAS INSTRUMENTS INC
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 8 MHz, RISC MICROCONTROLLER, PQFP80
封裝： GREEN, PLASTIC, QFP-80
文件頁數(shù)： 32/73頁
文件大?。?/td> 1121K
代理商： MSP430FG438IPN
MSP430FG43x
MIXED SIGNAL MICROCONTROLLER
SLAS380C APRIL 2004 REVISED MARCH 2011
38
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
12-bit ADC, temperature sensor and built-in VMID
PARAMETER
TEST CONDITIONS
VCC
MIN
NOM
MAX
UNIT
I
Operating supply current into
REFON = 0, INCH = 0Ah,
2.2 V
40
120
A
ISENSOR
Operating supply current into
AVCC terminal (see Note 1)
REFON = 0, INCH = 0Ah,
ADC12ON=NA, TA = 25_C
3 V
60
160
μA
V
(see Note 2)
ADC12ON = 1, INCH = 0Ah,
2.2 V/
986
mV
VSENSOR
(see Note 2)
ADC12ON = 1, INCH = 0Ah,
TA = 0°C
2.2 V/
3 V
986
mV
TC
ADC12ON
1 INCH
0Ah
2.2 V/
355
±3%
mV/
°C
TCSENSOR
ADC12ON = 1, INCH = 0Ah
2.2 V/
3 V
3.55
±3%
mV/
°C
t
Sample time required if
channel 10 is selected
ADC12ON = 1, INCH = 0Ah,
2.2 V
30
s
tSENSOR(sample)
channel 10 is selected
(see Note 3)
ADC12ON = 1, INCH = 0Ah,
Error of conversion result
≤ 1 LSB
3 V
30
μs
I
Current into divider at
ADC12ON
1 INCH
0Bh
2.2 V
NA
A
IVMID
Current into divider at
channel 11 (see Note 4)
ADC12ON = 1, INCH = 0Bh,
3 V
NA
μA
V
AV
divider at channel 11
ADC12ON = 1, INCH = 0Bh,
2.2 V
1.1
±0.04
V
VMID
AVCC divider at channel 11
ADC12ON = 1, INCH = 0Bh,
VMID is ~0.5 x VAVCC
3 V
1.5
1.50
±0.04
V
t
Sample time required if
channel 11 is selected
ADC12ON = 1, INCH = 0Bh,
2.2 V
1400
ns
tVMID(sample)
channel 11 is selected
(see Note 5)
ADC12ON = 1, INCH = 0Bh,
Error of conversion result
≤ 1 LSB
3 V
1220
ns
NOTES:
1. The sensor current ISENSOR is consumed if (ADC12ON = 1 and REFON=1), or (ADC12ON=1 AND INCH=0Ah and sample signal
is high). When REFON = 1, ISENSOR is already included in IREF+.
2. The temperature sensor offset can be as much as
±20_C. A single-point calibration is recommended in order to minimize the offset
error of the built-in temperature sensor.
3. The typical equivalent impedance of the sensor is 51 k
Ω. The sample time required includes the sensor-on time tSENSOR(on)
4. No additional current is needed. The VMID is used during sampling.
5. The on-time tVMID(on) is included in the sampling time tVMID(sample); no additional on time is needed.
12-bit DAC, supply specifications
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
AVCC
Analog supply voltage
AVCC = DVCC,
AVSS = DVSS =0 V
2.20
3.60
V
DAC12AMPx=2, DAC12IR=0,
DAC12_xDAT=0800h
2.2V/3V
50
110
I
Supply Current:
Single DAC Channel
DAC12AMPx=2, DAC12IR=1,
DAC12_xDAT=0800h , VeREF+=VREF+= AVCC
2.2V/3V
50
110
A
IDD
Single DAC Channel
(see Notes 1 and 2)
DAC12AMPx=5, DAC12IR=1,
DAC12_xDAT=0800h, VeREF+=VREF+= AVCC
2.2V/3V
200
440
μA
DAC12AMPx=7, DAC12IR=1,
DAC12_xDAT=0800h, VeREF+=VREF+= AVCC
2.2V/3V
700
1500
PSRR
Power supply
rejection ratio
DAC12_xDAT = 800h, VREF = 1.5 V
ΔAVCC = 100mV
2.2V
70
dB
PSRR
rejection ratio
(see Notes 3 and 4)
DAC12_xDAT = 800h, VREF = 1.5 V or 2.5 V
ΔAVCC = 100mV
3V
70
dB
NOTES:
1. No load at the output pin, DAC12_0 or DAC12_1, assuming that the control bits for the shared pins are set properly.
2. Current into reference terminals not included. If DAC12IR = 1 current flows through the input divider; see Reference Input
specifications.
3. PSRR = 20*log
{ΔAVCC/ΔVDAC12_xOUT}.
4. VREF is applied externally. The internal reference is not used.
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