ADM2682EBRIZ datasheet(3/20 Pages) AD

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Preliminary Technical Data

ADM2682E/ADM2687E

Rev. PrE | Page 3 of 20

SPECIFICATIONS

All voltages are relative to their respective ground; 3.0 ≤ VCC ≤ 5.5 V. All minimum/maximum specifications apply over the entire

recommended operation range, unless otherwise noted. All typical specifications are at TA = 25°C, VCC = 5 V unless otherwise noted.

Table 1.

Parameter

Symbol

Min

Typ

Max

Unit

Test Conditions

ADM2687E SUPPLY CURRENT

ICC

Data Rate ≤ 500 kbps

VCC = 3.3 V, 100 Ω load between Y and Z

VCC = 5 V, 100 Ω load between Y and Z

125

VCC = 3.3 V, 54 Ω load between Y and Z

VCC = 5 V, 54 Ω load between Y and Z

120

120 Ω load between Y and Z

ADM2682E SUPPLY CURRENT

ICC

Data Rate = 16 Mbps

150

120 Ω load between Y and Z

230

54 Ω load between Y and Z

ISOLATED SUPPLY VOLTAGE

VISOUT

3.3

DRIVER

Differential Outputs

Differential Output Voltage, Loaded

|VOD2|

2.0

3.6

RL = 100 Ω (RS-422), see Figure 23

1.5

3.6

RL = 54 Ω (RS-485), see Figure 23

|VOD3|

1.5

3.6

−7 V ≤ VTEST1 ≤ 12 V, see Figure 24

Δ|VOD| for Complementary Output States

Δ|VOD|

0.2

RL = 54 Ω or 100 Ω, see Figure 23

Common-Mode Output Voltage

VOC

3.0

RL = 54 Ω or 100 Ω, see Figure 23

Δ|VOC| for Complementary Output States

Δ|VOC|

0.2

RL = 54 Ω or 100 Ω, see Figure 23

Short-Circuit Output Current

IOS

200

Output Leakage Current (Y, Z)

µA

DE = 0 V, RE

��=0V,VCC=0Vor3.6V,

VIN = 12 V

−30

µA

DE = 0 V, RE

��=0V,VCC=0Vor3.6V,

VIN = −7 V

Logic Inputs DE, RE

��,TxD

Input Threshold Low

VIL

0.3 × VCC

DE, RE

��,TxD

Input Threshold High

VIH

0.7 × VCC

DE, RE

��,TxD

Input Current

−10

0.01

µA

DE, RE

��,TxD

RECEIVER

Differential Inputs

Differential Input Threshold Voltage

VTH

−200

−125

−30

−7 V < VCM < +12 V

Input Voltage Hysteresis

VHYS

VOC = 0 V

Input Current (A, B)

125

µA

DE = 0 V, VCC = 0 V or 3.6 V, VIN = 12 V

−100

µA

DE = 0 V, VCC = 0 V or 3.6 V, VIN = -7 V

Line Input Resistance

RIN

kΩ

−7 V < VCM < +12 V

Logic Outputs

Output Voltage Low

VOL

0.2

0.4

IO = 1.5 mA, VA − VB = −0.2 V

Output Voltage High

VOH

VCC − 0.3

VCC − 0.2

IO = −1.5 mA, VA − VB = 0.2 V

Short-Circuit Current

100

COMMON-MODE TRANSIENT IMMUNITY1

kV/µs

VCM = 1 kV, transient magnitude = 800 V

CM is the maximum common-mode voltage slew rate that can be sustained while maintaining specification-compliant operation. VCM is the common-mode potential

difference between the logic and bus sides. The transient magnitude is the range over which the common-mode is slewed. The common-mode voltage slew rates

apply to both rising and falling common-mode voltage edges.

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