Datasheet
TSC2008
SBAS406B – JUNE 2008 – REVISED MARCH 2009 ..........................................................................................................................................................
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As an example, use V
DD
= 1.2V and 12-bit mode with 2MHz SPI clock (f
SCLK
= 2MHz). The equivalent TSC
throughput is at least seven times faster than the effective throughput across the bus (9.26k x 7 = 64.82kSPS).
The supply current to the TSC for this rate and configuration is 240.08 µ A. To achieve an equivalent sample
throughput of 8.2kSPS using the device without preprocessing, the TSC2008 consumes only (8.2/64.82) ×
240.08 µ A = 30.37 µ A.
Table 7. Effective and Equivalent Throughput Rates
TSC
CONVERSION EFFECTIVE EQUIVALENT NO. NO. CCLK
SUPPLY SPI BUS CYCLE TIME THROUGHPUT THROUGHPUT OF OF f
CCLK
PERIODS
VOLTAGE SPEED (f
SCLK
) RESOLUTION ( µ s) (kSPS) (kSPS) SCL CCLK (kHz) (ns)
8-bit 204.3 4.89 34.26 17 127 3700 270.3
100kHz
12-bit 330.0 3.03 21.21 25 148 1850 540.5
8-bit 51.3 19.48 136.39 17 127 3700 270.3
1MHz
12-bit 105.0 9.52 66.67 25 148 1850 540.5
8-bit 42.8 23.35 163.46 17 127 3700 270.3
2MHz
12-bit 92.5 10.81 75.68 25 148 1850 540.5
8-bit 41.1 24.32 170.22 17 127 3700 270.3
2.5MHz
12-bit 90.0 11.11 77.78 25 148 1850 540.5
2.7V
8-bit 38.6 25.92 181.47 17 127 3700 270.3
4MHz
12-bit 86.3 11.59 81.16 25 148 1850 540.5
8-bit 36.0 27.76 194.31 17 127 3700 270.3
10MHz
12-bit 82.5 12.12 84.85 25 148 1850 540.5
8-bit 35.4 28.26 197.81 17 127 3700 270.3
16MHz
12-bit 81.6 12.26 85.82 25 148 1850 540.5
8-bit 35.0 28.57 199.98 17 127 3700 270.3
25MHz
12-bit 81.0 12.35 86.42 25 148 1850 540.5
8-bit 205.3 4.87 34.10 17 127 3600 277.8
100kHz
12-bit 332.2 3.01 21.07 25 148 1800 555.6
8-bit 52.3 19.13 133.90 17 127 3600 277.8
1MHz
12-bit 107.2 9.33 65.28 25 148 1800 555.6
8-bit 43.8 22.84 159.90 17 127 3600 277.8
2MHz
12-bit 94.7 10.56 73.90 25 148 1800 555.6
8-bit 42.1 23.77 166.36 17 127 3600 277.8
1.8V 2.5MHz
12-bit 92.2 10.84 75.90 25 148 1800 555.6
8-bit 39.5 25.30 177.09 17 127 3600 277.8
4MHz
12-bit 88.5 11.30 79.12 25 148 1800 555.6
8-bit 37.0 27.04 189.30 17 127 3600 277.8
10MHz
12-bit 84.7 11.80 82.62 25 148 1800 555.6
8-bit 36.3 27.52 192.62 17 127 3600 277.8
16MHz
12-bit 83.8 11.94 83.55 25 148 1800 555.6
8-bit 211.0 4.74 33.18 17 127 3100 322.5
100kHz
12-bit 345.5 2.89 20.26 25 148 1550 645.2
8-bit 58.0 17.25 120.76 17 127 3100 322.5
1MHz
12-bit 120.5 8.3 58.10 25 148 1550 645.2
8-bit 49.5 20.22 141.51 17 127 3100 322.5
2MHz
12-bit 108.0 9.26 64.82 25 148 1550 645.2
1.2V
8-bit 47.8 20.93 146.54 17 127 3100 322.5
2.5MHz
12-bit 105.5 9.48 66.36 25 148 1550 645.2
8-bit 45.2 22.12 154.81 17 127 3100 322.5
4MHz
12-bit 101.7 9.83 68.81 25 148 1550 645.2
8-bit 44.4 22.54 157.77 17 127 3100 322.5
5MHz
12-bit 100.5 9.95 69.66 25 148 1550 645.2
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