A5191HRT

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3

Symbol

Parameter

Min

Typ

Max

Units

Input Voltage, Low

3.0 – 5.5 V

V

Input Voltage, High

3.0 – 5.5 V

V

3.0 – 5.5 V

0.4

V

3.0 – 5.5 V

2.4

V

Input Capacitance of:

Analog Input

RXA

Digital Input

2.9

25

3.5

pF

pF

pF

Input Leakage Current

±500

nA

Output Leakage Current

±10

mA

Power Supply Current

(RBIAS = 500 k

W, AREF = 1.235 V)

3.3 V

5.0 V

150

150

330

300

450

600

mA

mA

Dynamic Digital Current

5.0 V

25

200

mA

Analog Reference

3.3 V

5.0 V

1.2

1.235

2.5

2.6

V

V

(Note 3)

Carrier Detect Reference (AREF – 0.08 V)

3.3 V

5.0 V

1.15

2.42

V

Comparator Bias Current

(RBIAS = 500 k

W, AREF = 1.235 V)

2.5

mA

3. The HART specification requires carrier detect (CD) to be active between 80 and 120 mVp−p. Setting CDREF at AREF − 0.08 VDC will set

the carrier detect to a nominal 100 mVp−p.

Pin Name

Description

Min

Typ

Max

Units

RxA

Receive analog input

Leakage current

Frequency – mark (logic 1)

Frequency – space (logic 0)

1190

2180

1200

2200

±150

1210

2220

nA

Hz

Hz

RxAF

Output of the high−pass filter

Slew rate

Gain bandwidth (GBW)

Voltage range

150

0.15

0.025

V/

ms

kHz

V

RxAFI

Carrier detect and receive filter input

Leakage current

±500

nA

TxA

Modulator output

Frequency – mark (logic 1)

Frequency – space (logic 0)

Amplitude (AREF 1.235 V)

Slew Rate − mark (logic 1)

Slew Rate − space (logic 0)

Loading (AREF = 1.235 V)

30

1196.9

2194.3

500

1860

3300

Hz

Hz

mV

V/s

V/s

k

W

RxD

Receive digital output

Rise/fall time

20

ns

CD

Carrier detect output

Rise/fall time

20

ns

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product

performance may not be indicated by the Electrical Characteristics if operated under different conditions.

4. The modular output frequencies are proportional to the input clock frequency (460.8 kHz).