Texas Instruments AFE5832 - Page 63

OPAMP-
GND
OPAMP+
OPAMP-
GND
OPAMP+
Layout of I/Q channels should be symmetric (mirror matching)
GND
49.9
R144
49.9
R153
CW I/V OUTPUT
1uF
C229
1uF
C234
1uF
C238
1uF
C236
0.1uF
C230
0.1uF
C233
0.1uF
C237
0.1uF
C235
GND
CW_Q_OUT_M
CW_Q_OUT_P
CW_SE_IP
CW_SE_QP
GND
GND
OPAMP+
OPAMP-GND
OPAMP+
OPAMP-
GND
TP68
TP67
3
1
2
3
4
5
6
7
8
9
V+
V-
CM
U15
1
2
3
4
5
6
7
8
9
V+
V-
CM
U16
5
6
7
4
8
U17B
1
2
3
4
8
U17A
OPA2614ID
4.7µF
C224
4.7µF
C243
OPAMP+
OPAMP-
OPAMP+
OPAMP-
0.015µFC241
0.015µF
C245
0.015µF
C226
0.015µF
C222
OPAMP+
OPAMP-
0.1uF
C239
499
R146
499
R155
499
R142
499
R151
49.9
R154
49.9
R152
49.9
R143
49.9
R145
4.7µF
C225
4.7µF
C223
4.7µF
C244
4.7µF
C242
1000pF
C231
1000pF
C232
Match tolerance of components in the I/Q path. R=0.1%, C=5%
3
2
1
J67
STX-3000
1
2 3 4 5
J66
1
2 3 4 5
J68
5
6
7
4
8
U18B
OPA2614ID
OPAMP+
OPAMP-
1
2
3
4
8
U18A
OPA2614ID
OPAMP+
OPAMP-
1
2
3
4
8
U19A
OPA2614ID
OPAMP+
OPAMP-
GND
OPAMP+
OPAMP-
0.1uF
C262
140k
R170
140k
R169
GND
OPAMP+
OPAMP-
0.1uF
C249
140k
R162
140k
R161
1uF
C250
0.1uF
C252
1uF
C254
0.1uF
C256
OPAMP+
OPAMP-
1uF
C251
0.1uF
C253
1uF
C255
0.1uF
C257
OPAMP+
OPAMP-
GND
GND
0
R164
0
R167
0
R175
0
R176
DNP
GND
0.1uF
C258
GND
0.1uF
C260
DNP
GND
VrQ
VocmQ
CW_I_OUT_M
CW_I_OUT_P
0
R158
0
R159
0.1uF
C247
DNP
GND
VrI
VocmI
VocmQ
5
6
7
4
8
U19B
OPA2614ID
OPAMP+
OPAMP-
0
R177
0
R178
DNP
GND
0.1uF
C261
GND
VrQ
GND
OPAMP+
OPAMP-
0.1uF
C264
1
2
3
4
8
U20A
OPAMP+
OPAMP-
0
R165
0
R166
DNP
GND
0.1uF
C259
GND
VocmI
5
6
7
4
8
U20B
OPAMP+
OPAMP-
0
R172
0
R173
DNP
GND
0.1uF
C263
GND
VrI
Vcm
Vr
Vcm
Vr
Vcm
Vr
4.99
R157
DNP
4.99
R160
DNP
4.99
R163
DNP
4.99
R168
DNP
499
R147
499
R141
499
R156
499
R150
0.1uF
C265
GND
0.1uF
C266
GND
0.015µFC240
0.015µF
C246
0.015µFC228
0.015µF
C221
3.30k
R148
4.70k
R149
4.70k
R174
3.30k
R171
www.ti.com AFE5832 EVM Schematic
63
SLOU489–August 2017
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Figure 74. AFE5832 Rev. A EVM Schematic 5 of 12