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ADM2487EBRWZ Scheda tecnica(PDF) 3 Page - Analog Devices

Il numero della parte ADM2487EBRWZ
Spiegazioni elettronici  2.5 kV Isolated RS-485 Transceivers with Integrated Transformer Driver
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
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ADM2482E/ADM2487E
Rev. 0 | Page 3 of 20
SPECIFICATIONS
All voltages are relative to their respective ground; 3.0 V ≤ VDD1 ≤ 5.5 V, 3.0 V ≤ VDD2 ≤ 3.6 V. All minimum/maximum specifications
apply over the entire recommended operation range, unless otherwise noted. All typical specifications are at TA = 25°C, VDD1 = 5 V,
VDD2 = 3.3 V, unless otherwise noted.
Table 1.
Parameter
Symbol
Min
Typ
Max
Unit
Test Conditions
SUPPLY CURRENT
Power-Supply Current, Logic Side
TxD/RxD Data Rate < 500 kbps
IDD1
3.5
mA
Unloaded output
ADM2487E TxD/RxD Data Rate = 500 kbps
IDD1
4
mA
Half-duplex configuration,
RTERMINATION = 120 Ω, see Figure 8
ADM2482E TxD/RxD Data Rate = 16 Mbps
IDD1
6.0
mA
Half-duplex configuration,
RTERMINATION = 120 Ω, see Figure 8
Power-Supply Current, Bus Side
TxD/RxD Data Rate < 500 kbps
IDD2
17
mA
Unloaded output
ADM2487E TxD/RxD Data Rate = 500 kbps
IDD2
40
mA
VDD2 = 3.6 V, half-duplex
configuration, RTERMINATION = 120 Ω,
see Figure 8
ADM2482E TxD/RxD Data Rate = 16 Mbps
IDD2
50
mA
VDD2 = 3.6 V, half-duplex
configuration, RTERMINATION = 120 Ω,
see Figure 8
DRIVER
Differential Outputs
Differential Output Voltage, Loaded
|VOD2|
2.0
5.0
V
RL = 100 Ω (RS-422), see Figure 2
1.5
5.0
V
RL = 54 Ω (RS-485), see Figure 2
|VOD3|
1.5
5.0
V
−7 V ≤ VTEST ≤ +12 V, see Figure 3
∆|VOD| for Complementary Output States
∆|VOD|
0.2
V
RL = 54 Ω or 100 Ω, see Figure 2
Common-Mode Output Voltage
VOC
3.0
V
RL = 54 Ω or 100 Ω, see Figure 2
∆|VOC| for Complementary Output States
∆|VOC|
0.2
V
RL = 54 Ω or 100 Ω, see Figure 2
Short-Circuit Output Current
IOS
250
mA
Output Leakage Current (Y, Z)
IO
125
μA
DE = 0 V, RE = 0 V, VCC = 0 V or
3.6 V, VIN = 12 V
−100
μA
DE = 0 V, RE = 0 V, VCC = 0 V or
3.6 V, VIN = −7 V
Logic Inputs
Input Threshold Low
VIL
0.25 × VDD1
V
DE, RE, TxD
Input Threshold High
VIH
0.7 × VDD1
V
DE, RE, TxD
Input Current
II
−10
+0.01
+10
μA
DE, RE, TxD
RECEIVER
Differential Inputs
Differential Input Threshold Voltage
VTH
−200
−125
−30
mV
−7 V < VCM < +12 V
Input Voltage Hysteresis
VHYS
15
mV
VOC = 0 V
Input Current (A, B)
II
125
μA
DE = 0 V, VDD = 0 V or 3.6 V,
VIN = 12 V
−125
μA
DE = 0 V, VDD = 0 V or 3.6 V,
VIN = −7 V
Line Input Resistance
RIN
96
−7 V < VCM < +12 V
Logic Outputs
Output Voltage Low
VOLRxD
0.2
0.4
V
IORxD = 1.5 mA, VA − VB = −0.2 V
Output Voltage High
VOHRxD
VDD1 − 0.3
VDD1 − 0.2
V
IORxD = −1.5 mA, VA − VB = 0.2 V
Short Circuit Current
IOS
100
mA
Tristate Output Leakage Current
IOZR
±1
μA
VDD1 = 5.0 V, 0 V < VO < VDD1


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