English
Language : 

MSP430F673X Datasheet, PDF (71/121 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER
◁
www.ti.com
MSP430F673x
MSP430F672x
SLAS731A – DECEMBER 2011 – REVISED APRIL 2012
SD24_B, Power Supply and Recommended Operating Conditions
MIN TYP
MAX UNIT
AVCC
fSD
VI
VIC
VID,FS
Analog supply voltage
Modulator clock frequency(1)
Absolute input voltage range
Common-mode input voltage range
Differential full scale input voltage
AVCC = DVCC, AVSS = DVSS = 0 V
VID = VI,A+ - VI,A-
SD24GAINx = 1
2.4
0.03
AVSS - 1V
AVSS - 1V
-VREF/GAIN
±910
3.6
2.3
±920
AVCC
AVCC
+VREF/GAIN
V
MHz
V
V
SD24GAINx = 2
±455 ±460
SD24GAINx = 4
±227 ±230
SD24GAINx = 8
±113 ±115
VID
Differential input voltage for specified
performance (2)
SD24REFS = 1
SD24GAINx = 16
±57
±58
mV
SD24GAINx = 32
±28
±29
SD24GAINx = 64
±14 ±14.5
SD24GAINx =
128
±7 ±7.2
CREF
VREF load capacitance(3)
SD24REFS = 1
100
nF
(1) Modulator clock frequency: MIN = 32.768 kHz - 10% ≈ 30 kHz. MAX = 32.768 kHz × 64 + 10% ≈ 2.3 MHz
(2) The full-scale range (FSR) is defined by VFS+ = +VREF/GAIN and VFS-= -VREF/GAIN: FSR = VFS+ - VFS-= 2*VREF/GAIN. If VREF is sourced
externally, the analog input range should not exceed 80% of VFS+ or VFS-; i.e., VID = 0.8 VFS- to 0.8 VFS+. If VREF is sourced internally,
the given VID ranges apply.
(3) There is no capacitance required on VREF. However, a capacitance of 100nF is recommended to reduce any reference voltage noise.
SD24_B, Analog Input (1)
PARAMETER
CI
Input capacitance
ZI
Input impedance
(Pin A+ or A- to AVSS)
ZID
Differential input impedance
(Pin A+ to pin A-)
TEST CONDITIONS
SD24GAINx = 1
SD24GAINx = 2
SD24GAINx = 4
SD24GAINx = 8
SD24GAINx = 16
SD24GAINx = 32, 64, 128
SD24GAINx = 1
fSD24 = 1MHz
SD24GAINx = 8
SD24GAINx = 32
SD24GAINx = 1
fSD24 = 1MHz
SD24GAINx = 8
SD24GAINx = 32
(1) All parameters pertain to each SD24_B converter.
VCC
MIN TYP MAX UNIT
5
5
5
pF
5
5
5
3V
200
3V
200
kΩ
3V
200
3V
300 400
3V
400
kΩ
3V
300 400
Copyright © 2011–2012, Texas Instruments Incorporated
Submit Documentation Feedback
71
 ▷