AD7306JRZ Ver la hoja de datos (PDF) - Analog Devices
Número de pieza
componentes Descripción
Fabricante
AD7306JRZ Datasheet PDF : 10 Pages
| |||
0.1µF
+5V INPUT
0.1µF
0.1µF
7
2 C1+
3
C1–
VCC
±10V
POWER
1
V+
22
23
C2+
SUPPLY
GENERATOR
V–
C2–
24
0.1µF
0.1µF
20
T1 IN
T1
TTL/CMOS
19
INPUTS T2 IN
T2
16
T3 IN
T3
AD7306
21
R2 OUT
R2
TTL/CMOS
OUTPUTS
17
R1
R1 OUT
15
232/422 SEL
5
T1 OUT
RS-232
6
OUTPUTS
T2 OUT
10
RS-422
11 T3 OUT (B) OUTPUT
T3 OUT (A)
4
RS-232
R2 IN INPUT
9
RS-232/
R1IN /R1IN (A) RS-422
INPUT
8
R1IN (B)
RS-422
INPUT
18
14
Figure 1. AD7306 Application Circuit
T3 IN
T3 OUT (B)
T3
RL DIFF = 100Ω
CL1 = 100pF
CL2 = 100pF
T3 OUT (A)
Figure 2. RS-422 Driver. Propagation Delay Test Circuit
T3 OUT (B)
T3 IN
T3
VOD
RL DIFF
T3 OUT (A)
Figure 3. RS-422 Driver. Voltage Measurement Test
Circuit
AD7306
3V
1.5V
0V
T3 OUT (A)
1/2 VO
VO
t PLH
T3 OUT (B)
VO
0V
–VO
t SKEW
90% POINT
10% POINT
tR
1.5V
t PHL
t SKEW
90% POINT
10% POINT
tF
Figure 4. RS-422 Driver. Propagation Delay Rise/Fall
Timing
DIFFERENTIAL
INPUT
R1IN (B) - R1IN (A)
2.5V
–2.5V
R1OUT
0V
t PHL
VOL
0V
tPLH
VOH
Figure 5. RS-422 Receiver Timing
232/422 SEL
1.5V
1.5V
t EN1
R1OUT
RS-232
t EN2
VOH
VOL
RS-422
VOH
VOL
RS-232
Figure 6. RS-232/RS-422 Receiver Enable Timing
REV. D
–5–
Share Link: 