tsl2301 TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS, tsl2301 Datasheet - Page 3

• Manufacturer Part Number: tsl2301
• Description: Linear Optical Sensor Array With Analogtodigital Converter
• Manufacturer: TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS

www.taosinc.com
Register address map
The TSL2301 contains seven registers (Table 2). Three registers control the gain of the analog-to-digital
converters (ADCs). Three other registers allow the offset of the system to be corrected. Together the gain and
offset registers are used to maximize the achievable dynamic range. The last register is a mode register that
selects both device cascade options and production test options. Note that device cascade options do not apply
to the 8-pin packaged device.
The offset registers are 8-bit signed offsets and the gain registers are 5-bit magnitudes. The programmed offset
correction is applied to the sampled energy, and then the gain is applied. (e.g., the gain will affect the offset
correction). These two registers allow the user to maximize the dynamic range achievable in the given system.
The mode register is used during factory testing and for future product enhancements. The user should always
program zeros into the mode register.
GAIN CODE
10
12
13
14
15
11
0
1
2
3
4
5
6
7
8
9
RELATIVE GAIN
1.00
1.02
1.05
1.07
1.09
1.12
1.15
1.18
1.21
1.24
1.27
1.31
1.34
1.38
1.43
1.47
ADDRESS
1F
0
1
2
3
4
5
Table 1. Gain Settings and Results
% INCREASE
Table 2. Register Address Map
t
REGISTER DESCRIPTION
2.17
2.22
2.27
2.33
2.38
2.44
2.50
2.56
2.63
2.70
2.78
2.86
2.94
3.03
3.13
Pixels 68–101 Offset
Pixels 34–67 Offset
Pixels 68–101 Gain
Pixels 0–33 Offset
Pixels 34–67 Gain
Pixels 0–33 Gain
Mode
GAIN CODE
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
REGISTER WIDTH
RELATIVE GAIN
8
5
8
5
8
5
4
t
1.52
1.57
1.62
1.68
1.74
1.81
1.88
1.96
2.05
2.14
2.24
2.35
2.48
2.61
2.77
2.94
% INCREASE
Copyright E 2000, TAOS Inc.
3.23
3.33
3.45
3.57
3.70
3.85
4.00
4.17
4.35
4.55
4.76
5.00
5.26
5.56
5.88
6.25
TAOS007 – JULY 2000
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