Advance Information

MH88437-P

9

)

† Electrical Characteristics are over Recommended Operating Conditions unless otherwise stated.

‡ Typical figures are at 25

°C with nominal + 5V supplies and are for design aid only.

Variations from Standard Loop Electrical Characteristics

(MH88437AD-PI/MH88437AS-PI) (+70˚C to +85˚C)

Characteristics

Sym

Min

Typ

Max

Units

Test Conditions

1

Operating Loop Current

16

60

80

mA

mA

CL\=0

CL\=1

Characteristics

Sym

Min

Max

Units

Test Conditions

1

Supply Current

5mA

2RV,

LCD

Low Level Output Voltage

High Level Output Voltage

2.4

0.4

V

V

3

LC

Low Level Input Voltage

High Level Input Voltage

Low Level Input Current

High Level Input Current

2.0

0

350

0.8

60

400

V

V

µA

µA

4

VR+

VR-

DC common mode

VCM

0

2

VCC

VDC

Use coupling caps for

higher voltages and single

ended

Characteristics

Sym

Min

Max

Units

Test Conditions

1

Input Impedance

VR-

VR+

47k

94k

Ω

Ω

2

Output Impedance at VX

10

Ω

3

Receive Gain (VR to 2-Wire)

-1

0

1

dB

Test circuit (Figure 8)

Input 0.5V at 1kHz

4

Frequency Response Gain

(relative to Gain @ 1kHz)

-0.5

0

0.5

dB

ILOOP = 15-60mA

300Hz to 3400 Hz

5

Signal Output Overload Level

at 2-Wire

at VX

0

0

dBm

dBm

THD < 5% @ 1kHz

VCC = 5V

6

Signal/Noise & Distortion

at 2-Wire

at VX

SINAD

70

70

dB

dB

Input 0.5V at 1kHz

300-3400Hz

7

Power Supply Rejection Ratio

at 2-Wire

at VX

PSRR

25

25

40

40

dB

dB

Ripple 0.1Vrms 1kHz on

8

Transhybrid Loss

THL

16

25

dB

Test circuit (Figure 8)

9

2-Wire Input Impedance

Zin

Note 3

Ω

@ 1kHz