Texas Instruments SM320F2812-HT Manuel D’Utilisation
SGUS062A – JUNE 2009 – REVISED APRIL 2010
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Table 6-47. AC Specifications
(1) (2)
T
A
= –55°C to 125°C
T
A
= 220°C
PARAMETER
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
SINAD
Signal-to-noise ratio + distortion
62
57
dB
SNR
Signal-to-noise ratio
62
57
dB
THD
Total harmonic distortion
-68
-68
dB
ENOB (SNR)
Effective number of bits
10.1
9.1
Bits
SFDR
Spurious free dynamic range
69
68
dB
(1)
Not production tested.
(2)
Validated at the following conditions: ADC Input Frequency = 10.71 KHz, XCLKIN = 30 MHz, PLLCR = 0xA (SYSCLK = 150 MHz),
HSPCP = 3 (ADCCLK= 25 MHz), ADCCLKPS = 1 (ADCCLK= 12.5 MHz), CPS = 0 (ADCCLK =12.5 MHZ), ACQ_PS (SH) = 3
HSPCP = 3 (ADCCLK= 25 MHz), ADCCLKPS = 1 (ADCCLK= 12.5 MHz), CPS = 0 (ADCCLK =12.5 MHZ), ACQ_PS (SH) = 3
6.29.3 Current Consumption for Different ADC Configurations (at 25-MHz ADCCLK)
Table 6-48. Current Consumption
(1)
I
DDA
(TYP)
(2)
I
DDAIO
(TYP)
I
DD1
(TYP)
ADC OPERATING MODE/CONDITIONS
(3)
Mode A (Operational Mode):
40 mA
1
m
A
0.5 mA
–BG and REF enabled
–PWD disabled
Mode B:
–ADC clock enabled
7 mA
0
5
m
A
–BG and REF enabled
–PWD enabled
Mode C:
–ADC clock enabled
1
m
A
0
5
m
A
–BG and REF disabled
–PWD enabled
Mode D:
–ADC clock disabled
1
m
A
0
0
–BG and REF disabled
–PWD enabled
(1)
Not production tested.
(2)
IDDA – includes current into V
DDA1
/ V
DDA2
and AV
DDREFBG
(3)
Test Conditions: SYSCLKOUT = 150 MHz
ADC module clock = 25 MHz
ADC performing a continuous conversion of all 16 channels in Mode A
ADC module clock = 25 MHz
ADC performing a continuous conversion of all 16 channels in Mode A
136
Electrical Specifications
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