MSP430F6779A Datasheet, PDF (56/176 Pages) Texas Instruments – Polyphase Metering SoCs

MSP430F6779A, MSP430F6778A, MSP430F6777A, MSP430F6776A, MSP430F6775A
MSP430F6769A, MSP430F6768A, MSP430F6767A, MSP430F6766A, MSP430F6765A
MSP430F6749A, MSP430F6748A, MSP430F6747A, MSP430F6746A, MSP430F6745A
SLAS982 – MAY 2014
www.ti.com
Table 5-43. SD24_B AC Performance
f_SD24 = 1 MHz, SD24OSRx = 256, SD24REFON = 1
PARAMETER
TEST CONDITIONS
SD24GAIN: 1
V_CC
MIN TYP MAX UNIT
3V
82
86
SD24GAIN: 2
3V
85
SD24GAIN: 4
3V
84
SINAD
Signal-to-noise +
distortion ratio
SD24GAIN: 8
SD24GAIN: 16
f_IN = 50Hz⁽¹⁾
3V
81
83
dB
3V
80
SD24GAIN: 32
3V
71
73
SD24GAIN: 64
3V
67
SD24GAIN: 128
3V
61
SD24GAIN: 1
3V
95
THD
Total harmonic distortion SD24GAIN: 8
f_IN = 50Hz⁽¹⁾
3V
90
dB
SD24GAIN: 32
3V
86
(1) The following voltages were applied to the SD24_B inputs: V_I,A+(t) = 0 V + V_PP/2 × sin(2π × f_IN × t) and V_I,A-(t) = 0 V - V_PP/2 × sin(2π ×
f_IN × t)
resulting in a differential voltage of V_ID = V_I,A+(t) - V_I,A-(t) = V_PP × sin(2π × f_IN × t) with V_PP being selected as the maximum value allowed
for a given range (according to SD24_B recommended operating conditions).
Table 5-44. SD24_B AC Performance
f_SD24 = 2 MHz, SD24OSRx = 512, SD24REFON = 1
PARAMETER
TEST CONDITIONS
SD24GAIN: 1
V_CC
MIN TYP MAX UNIT
3V
87
SD24GAIN: 2
3V
85
SD24GAIN: 4
3V
84
SINAD
Signal-to-noise +
distortion ratio
SD24GAIN: 8
SD24GAIN: 16
f_IN = 50Hz⁽¹⁾
3V
3V
83
dB
81
SD24GAIN: 32
3V
76
SD24GAIN: 64
3V
71
SD24GAIN: 128
3V
65
(1) The following voltages were applied to the SD24_B inputs: V_I,A+(t) = 0 V + V_PP/2 × sin(2π × fIN × t) and V_I,A-(t) = 0 V - V_PP/2 × sin(2π ×
f_IN × t)
resulting in a differential voltage of V_ID = V_I,A+(t) - V_I,A-(t) = V_PP × sin(2π × f_IN × t) with V_PP being selected as the maximum value allowed
for a given range (according to SD24_B recommended operating conditions).
Table 5-45. SD24_B AC Performance
f_SD24 = 32 kHz, SD24OSRx = 512, SD24REFON = 1
PARAMETER
TEST CONDITIONS
SD24GAIN: 1
V_CC
MIN TYP MAX UNIT
3V
89
SD24GAIN: 2
3V
85
SD24GAIN: 4
3V
84
SINAD
Signal-to-noise +
distortion ratio
SD24GAIN: 8
SD24GAIN: 16
f_IN = 50Hz⁽¹⁾
3V
3V
82
dB
80
SD24GAIN: 32
3V
76
SD24GAIN: 64
3V
67
SD24GAIN: 128
3V
61
(1) The following voltages were applied to the SD24_B inputs: V_I,A+(t) = 0 V + V_PP/2 × sin(2π × fIN × t) and V_I,A-(t) = 0 V - V_PP/2 × sin(2π ×
f_IN × t)
resulting in a differential voltage of V_ID = V_I,A+(t) - V_I,A-(t) = V_PP × sin(2π × f_IN × t) with V_PP being selected as the maximum value allowed
for a given range (according to SD24_B recommended operating conditions).
56
Specifications
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MSP430F6769A MSP430F6768A MSP430F6767A MSP430F6766A MSP430F6765A MSP430F6749A
MSP430F6748A MSP430F6747A MSP430F6746A MSP430F6745A