An Adaptive Amplifier System for Wireless Sensor Network Applications

Table 1

Test conditions and expected values for the resistor matrix.

Test condition	RtapMux (hexadecimal values)	EXGAIN	Nominal value for Vref (Vdd Units)	PGA gain value (gain ≥1)	PGA gain value (gain ≤1)
1	0	1	0.0208	48.000	0.0208
2	1	1	0.0417	24.000	0.0417
3	0	0	0.0625	16.000	0.0625
4	1	0	0.1250	8.000	0.1250
5	2	0	0.1875	5.333	0.1875
6	3	0	0.2500	4.000	0.2500
7	4	0	0.3125	3.200	0.3125
8	5	0	0.3750	2.667	0.3750
9	6	0	0.4375	2.286	0.4375
10	7	0	0.5000	2.000	0.5000
11	8	0	0.5625	1.778	0.5625
12	9	0	0.6250	1.600	0.6250
13	A	0	0.6875	1.455	0.6875
14	B	0	0.7500	1.333	0.7500
15	C	0	0.8125	1.231	0.8125
16	D	0	0.8750	1.143	0.8750
17	E	0	0.9375	1.067	0.9375
18	F	0	1.0000	1.000	1.0000