Texas Instruments DEM-OPA-SO-1C demonstration fixture DEM-OPA-SO-1C DEM-OPA-SO-1C Datenbogen
Produktcode
DEM-OPA-SO-1C
www.ti.com
2
Circuit
R
4
C
E
12
2
V
SN
TTL
5
C_HOLD
V
SP
-V
S
9
GND
1
I
Q
+V
S
13
V
SN
V
SP
V
SN
OTA_OUT
R
6
R
9
C
3
C
4
R
14
R
3
R
11
3
B
11
S/H In-
10
S/H In+
R
7
R
5
R
13
R
10
In
OTA_In
R
2
V
SN
+
+
C
5
C
2
L
1
TB1
L
2
C
6
C
1
HOLD
7
CTRL
C
HOLD
4
R
8
R
12
R
1
3
Components
Circuit
The circuit schematic in
shows the connections for all possible components. Each configuration
uses only some of the components.
Figure 2. Schematic for DEM-OPA-SO-1C
Components that have RF performance similar to the ones in
may be substituted.
Table 1. Component Descriptions
PART
DESCRIPTION
C
5
, C
6
Tantalum Chip Capacitor, SMD EIA Size 3516, 20V
C
1
, C
2
, C
3
, C
4
Multilayer Ceramic Chip Capacitor, SMD 1206, 50V
OTA_IN, OTA_OUT, IN, TTL, C_HOLD
SMA or SMB Board Jack (Amphenol 901-144-8)
L
1
, L
2
EMI-Suppression Ferrite Chip, SMD 1206 (Steward LI 1206 B 900 R)
TB
1
Terminal Block, 3.5mm Centers (On-Shore Technology ED555/3DS)
R
XX
Metal Film Chip Resistor, SMD 1206, 1/8W
Please refer to
for the location of the following components:
•
R
3
, R
4
, R
9
and R
12
set the desired input/output impedances of the Operational Transconductance
Amplifer (OTA) section.
•
R
5
is used to set the gain of the OTA section.
•
R
10
, R
11
, R
13
, and R
14
set the desired input/output impedances of the sampling OTA section.
•
C
1
is the hold capacitor.
•
R
7
and R
8
sets the input impedance for the TTL control.
2
DEM-OPA-SO-1C Demonstration Fixture
SBOU039 – August 2006