Rainbow Electronics MAX1464 - Manual (Page 32)

MAX1464
Low-Power, Low-Noise Multichannel
Sensor Signal Processor
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BIT NAME DESCRIPTION
15–7 — Unused.
6–4 BIAS2[2:0] ADC bias setting to use during conversion of channel 2. BIAS2[2] = MSB.
3–2 — Unused.
1–0 REF2[1:0] Reference select for conversion on channel 2. REF2[2] = MSB.
Table 11. ADC_Config_2B (Address = 06h)
BITS NAME DESCRIPTION
15–11 PGAT[4:0] Programmable gain to use during conversion of temperature sensor. PGAT[4] = MSB.
10–8 CLKT[2:0] ADC clock setting to use during conversion of the temperature sensor. CLKT[2] = MSB.
7 — Unused.
6–4 REST[2:0] ADC resolution setting to use during conversion of the temperature sensor. REST[2] = MSB.
3 COT[3] Coarse-offset DAC sign bit.
2–0 COT[2:0] Coarse-offset DAC setting to use during conversion of the temperature sensor. COT[2] = MSB.
Table 12. ADC_Config_TA (Address = 08h)
BITS NAME DESCRIPTION
15–7 — Unused.
6–4 BIAST[2:0] ADC bias setting to use during conversion of the temperature sensor. BIAST[2] = MSB.
3–0 — Unused.
Table 13. ADC_Config_TB (Address = 09h)
PGAn[4:0] GAIN (V/V)
00000 0.99
00001 7.7
00010 15.5
00011 23
00100 31
00101 39
00110 46
00111 54
01000 62
01010 77
01100 92
01110 107
10000 123
10100 153
11000 183
11100 214
11110 244
Table 14. Programmable-Gain Amplifier
(PGAn[4:0], Where n = 1, 2, or T)
CLKn[2:0] DIVISOR n f ADC (Hz)
000 4 1M
001 8 500k
010 16 250k
011 32 125k
100 64 62.5 k
101 128 31.25k
110 256 15.625k
111 512 7.8125k
Table 15. ADC Clock (CLKn[2:0],
Where n = 1, 2, or T; f
CLK = 4MHz)