Texas Instruments Evaluation Board for the LMP7312 LMP7312MAEVAL/NOPB LMP7312MAEVAL/NOPB 데이터 시트
제품 코드
LMP7312MAEVAL/NOPB
3
L
M
P
7
3
1
2
E
v
a
lu
a
tio
n
B
o
a
rd
U
s
e
r
G
u
id
e
(5
5
1
6
0
0
3
6
0
-0
0
1
R
E
V
A
)
Table 1 Register Values
LSB
MSB
HI_Z
NULL_SW
EN_CL
Gain_0
Gain_1
Gain Value (V/V)
Mode of
Operation
0
0
0
0
0
0.096
Attenuation
0
0
0
1
0
0.192
Attenuation
0
0
0
0
1
0.384
Attenuation
0
0
0
1
1
0.768
Attenuation
0
0
1
0
1
1
Amplification
0
0
1
1
1
2
Amplification
1
x
x
x
x
-
High
Impedance
output
0
1
x
x
x
1
Null Switch
mode
Table 2 S2 Dip switch description
PINS
NAME
1-2
Hiz
3-4
Null_SW
5-6
EN_CL
7-8
Gain_0
9-10
Gain_1
WRITING TO THE REGISTER USING A
MICROCONTROLLER
A microcontroller can be used to program the
LMP7312. If the microcontroller is provided with a
TTL logic signal connect pin1 and pin2 of J6
together, otherwise, apply a voltage compliant
with the microcontroller logic value to the VIO
banana plug, and short pin2 and pin3 of J6. The
microcontroller signals are connected to the
LMP7312 through J7. More information on the
SPI configuration is provided in the SPI section of
the LMP7312 datasheet.
LMP7312. If the microcontroller is provided with a
TTL logic signal connect pin1 and pin2 of J6
together, otherwise, apply a voltage compliant
with the microcontroller logic value to the VIO
banana plug, and short pin2 and pin3 of J6. The
microcontroller signals are connected to the
LMP7312 through J7. More information on the
SPI configuration is provided in the SPI section of
the LMP7312 datasheet.
Table 3 J7 connector description
PIN
NAME
PIN
NAME
1
CSB
8
NC
2
GND
9
NC
3
SCK
10
NC
4
NC
11
NC
5
SDI
12
NC
6
NC
13
NC
7
SDO
14
NC
Interfacing ADC Eval Board
The LMP7312 Eval Board can be interfaced with
the ADC141S626 and ADC161S626 Eval Boards
through the P1 connector only when the
LMP7312 is configured in the differential output
mode (see Output Configuration section).
the ADC141S626 and ADC161S626 Eval Boards
through the P1 connector only when the
LMP7312 is configured in the differential output
mode (see Output Configuration section).
Table 4 P1 connector description
PIN
1
2
3
4
5
NAME
Vs GND OUT-
GND OUT+