339
Two output pins (INT2, INT3) are used to select the desired gain factor of the amplifier.
Table 3. Amplifier Gain Factor
INT2
INT3
GAIN FACTOR
0
0
1
0
1
2
1
0
4
1
1
8
Figure 20. Autoranging Circuit Diagram
+
–
+
–
+
–
VIN
3
2
VCC3
8
1
4
TLC272
68 k
Ω
VCC3
30 k
Ω
15 k
Ω
VCC3
10 k
Ω
23
LM399
LM399
10 k
Ω
VCC3
17
24
5
4
3
2
12
’370Cx5x
AN6 ( DIGITAL I / O )
AN0
AN7 ( DIGITAL I /O)
51
50
INT2
INT3
( DIGITAL I / O )
( DIGITAL I / O )
9
8
14
30 k
Ω
10 k
Ω
VCC3
10 k
Ω
20 k
Ω
68 k
Ω
TLC4066
TLC4066
TLC4066
2
3
9
B
B
B
C
R
T
L
C
R
T
L
C
R
T
L
A
A
A
13
5
4
2
6
6
6
4
8
4
5
7
1
3
5
74LS04
74LS04
74LS04
74LS139
1
3
2
Y0
Y1
Y2
Y3
A
B
G
1
*
Summary of Contents for TMS370 Series
Page 1: ...TMS370 Microcontroller Family Application Book 1996 8 Bit Microcontroller Family ...
Page 2: ...Printed in U S A February 1996 SPNA017 ...
Page 3: ...1996 Application TMS370 Microcontroller Family Book ...
Page 20: ...1 Part I Introduction ...
Page 21: ...2 ...
Page 22: ...3 Introduction Microcontroller Products Semiconductor Group Texas Instruments ...
Page 23: ...4 ...
Page 25: ...6 ...
Page 27: ...8 ...
Page 29: ...10 ...
Page 31: ...12 ...
Page 33: ...14 ...
Page 37: ...18 ...
Page 39: ...20 ...
Page 41: ...22 ...
Page 43: ...24 ...
Page 45: ...26 ...
Page 47: ...28 ...
Page 49: ...30 ...
Page 81: ...62 ...
Page 82: ...63 Clear RAM Microcontroller Products Semiconductor Group Texas Instruments ...
Page 83: ...64 ...
Page 85: ...66 ...
Page 86: ...67 RAM Self Test on the TMS370 Microcontroller Products Semiconductor Group Texas Instruments ...
Page 87: ...68 ...
Page 89: ...70 ...
Page 90: ...71 ROM Checksum on the TMS370 Microcontroller Products Semiconductor Group Texas Instruments ...
Page 91: ...72 ...
Page 95: ...76 ...
Page 97: ...78 ...
Page 98: ...79 Bubble Sort With the TMS370 Microcontroller Products Semiconductor Group Texas Instruments ...
Page 99: ...80 ...
Page 101: ...82 ...
Page 103: ...84 ...
Page 105: ...86 ...
Page 109: ...90 ...
Page 115: ...96 ...
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Page 119: ...100 ...
Page 121: ...102 ...
Page 125: ...106 ...
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Page 207: ...188 ...
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Page 219: ...200 ...
Page 221: ...202 ...
Page 313: ...294 ...
Page 315: ...296 ...
Page 319: ...300 ...
Page 323: ...304 ...
Page 324: ...305 T1PWM Set Up Routines Microcontroller Products Semiconductor Group Texas Instruments ...
Page 325: ...306 ...
Page 327: ...308 ...
Page 329: ...310 ...
Page 331: ...312 ...
Page 387: ...368 ...
Page 389: ...370 ...
Page 393: ...374 ...
Page 395: ...376 ...
Page 396: ...377 PACT Command Macros Microcontroller Products Semiconductor Group Texas Instruments ...
Page 397: ...378 ...
Page 403: ...384 ...
Page 405: ...386 ...
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Page 485: ...466 ...
Page 487: ...468 ...
Page 491: ...472 ...
Page 492: ...473 Part V External Memory Expansion Examples ...
Page 493: ...474 ...
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