参数资料
型号: MSP430F6638IPZR
厂商: TEXAS INSTRUMENTS INC
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 20 MHz, RISC MICROCONTROLLER, PQFP100
封装: PLASTIC, QFP-100
文件页数: 70/105页
文件大小: 1077K
代理商: MSP430F6638IPZR
PRODUCTPREVIEW
V
R+
Gain Error
Offset Error
DAC Code
DAC V
OUT
Ideal transfer
function
R
=
Load
AV
CC
C
= 100 pF
Load
2
DAC Output
Positive
Negative
R
O/P(DAC12_x)
Max
0.3
AV
CC
AV
– 0.3 V
CC
V
OUT
Min
R
Load
AV
CC
C
= 100 pF
Load
2
I
Load
DAC12
O/P(DAC12_x)
MSP430F663x
www.ti.com
SLAS566A – JUNE 2010 – REVISED JULY 2010
Figure 9. Linearity Test Load Conditions and Gain/Offset Definition
12-Bit DAC, Output Specifications
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
No load, VeREF+ = AVCC, DAC12_xDAT = 0h,
0
0.005
DAC12IR = 1, DAC12AMPx = 7
No load, VeREF+ = AVCC, DAC12_xDAT = 0FFFh,
AVCC
Output voltage
DAC12IR = 1, DAC12AMPx = 7
– 0.05
VO
range(1) (see
2.2 V/3 V
V
RLoad = 3 k, VeREF+ = AVCC, DAC12_xDAT =
0
0.1
0h, DAC12IR = 1, DAC12AMPx = 7
RLoad = 3 k, VeREF+ = AVCC, DAC12_xDAT =
AVCC
0FFFh, DAC12IR = 1, DAC12AMPx = 7
– 0.13
Maximum DAC12 load
CL(DAC12)
2.2 V/3 V
100
pF
capacitance
DAC12AMPx = 2, DAC12xDAT = 0FFFh,
–1
VO/P(DAC12) > AVCC – 0.3
Maximum DAC12 load
IL(DAC12)
2.2 V/3 V
mA
current
DAC12AMPx = 2, DAC12xDAT = 0h,
1
VO/P(DAC12) < 0.3 V
RLoad = 3 k, VO/P(DAC12) < 0.3 V,
150
250
DAC12AMPx = 2, DAC12_xDAT = 0h
Output resistance
RLoad = 3 k, VO/P(DAC12) > AVCC – 0.3 V,
RO/P(DAC12)
2.2 V/3 V
150
250
DAC12_xDAT = 0FFFh
RLoad = 3 k,
6
0.3 V
≤ VO/P(DAC12) ≤ AVCC – 0.3 V
(1)
Data is valid after the offset calibration of the output amplifier.
Figure 10. DAC12_x Output Resistance Tests
Copyright 2010, Texas Instruments Incorporated
67
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