Datasheet

MSP430x22x2, MSP430x22x4
MIXED SIGNAL MICROCONTROLLER
SLAS504B − JULY 2006 − REVISED JULY 2007
54
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
operational amplifier OA feedback network,
noninverting amplifier mode (OAFCx = 4) (MSP430x22x4 only)
PARAMETER TEST CONDITIONS VCC MIN TYP MAX UNIT
OAFBRx = 0 0.998 1.00 1.002
OAFBRx = 1 1.328 1.334 1.340
OAFBRx = 2 1.985 2.001 2.017
G
Gain
OAFBRx = 3
22V/3V
2.638 2.667 2.696
G Gain
OAFBRx = 4
2.2 V/ 3 V
3.94 4.00 4.06
OAFBRx = 5 5.22 5.33 5.44
OAFBRx = 6 7.76 7.97 8.18
OAFBRx = 7 15.0 15.8 16.6
THD
Total harmonic distortion/
All gains
2.2 V −60
dB
THD
Total
harmonic
distortion/
nonlinearity
All gains
3 V −70
dB
t
Settle
Settling time (see Note 1) All power modes 2.2 V/3 V 7 12 μs
NOTES: 1. The settling time specifies the time until an ADC result is stable. This includes the minimum required sampling time of the ADC. The
settling time of the amplifier itself might be faster.
operational amplifier OA feedback network,
inverting amplifier mode (OAFCx = 6) (see Note 1) (MSP430x22x4 only)
PARAMETER TEST CONDITIONS VCC MIN TYP MAX UNIT
OAFBRx = 1 −0.345 −0.335 −0.325
OAFBRx = 2 −1.023 −1.002 −0.979
OAFBRx = 3 −1.712 −1.668 −1.624
G Gain
OAFBRx = 4
2.2 V/ 3 V
−3.10 −3.00 −2.90
G
Gain
OAFBRx = 5
2.2
V/
3
V
−4.51 −4.33 −4.15
OAFBRx = 6 −7.37 −6.97 −6.57
OAFBRx = 7 −16.3 −14.8 −13.1
THD
Total harmonic distortion/
All gains
2.2 V −60
dB
THD
Total
harmonic
distortion/
nonlinearity
All gains
3 V −70
dB
t
Settle
Settling time (see Note 2) All power modes 2.2 V/3 V 7 12 μs
NOTES: 1. This includes the 2 OA configuration “inverting amplifier with input buffer”. Both OA needs to be set to the same power mode OAPMx.
2. The settling time specifies the time until an ADC result is stable. This includes the minimum required sampling time of the ADC. The
settling time of the amplifier itself might be faster.