AD2426 datasheet(21/38 Pages) AD

21 / 38 page

AD2426/AD2427/AD2428

Rev. F

Page 21 of 38

November 2023

The 32-lead LFCSP_SS package requires thermal trace squares

and thermal vias to an embedded ground plane in the PCB. The

exposed paddle must connect to ground for proper operation to

data sheet specifications. Refer to JEDEC standard JESD51-5 for

more information.

ESD CAUTION

TEST CIRCUITS AND SWITCHING

CHARACTERISTICS

Figure 20 shows a line driver voltage measurement circuit of the

differential line driver and receiver AP/AN and BP/BN pins.

OUTPUT DRIVE CURRENTS

Figure 21 through Figure 26 show typical current voltage char-

acteristics for the output drivers of the transceiver. The curves

represent the current drive capability of the output drivers as a

function of output voltage. Drive Strength 0 is DS0, Drive

Strength 1 is DS1, controlled via the PINCFG register.

Note the following:

•I2C pins only support high drive strength (DS1).

• Digital I/Os include BCLK, SYNC, IRQ/IO0, ADR1/IO1,

ADR2/IO2, DTX0/IO3, DTX1/IO4, DRX0/IO5,

DRX1/IO6, PDMCLK/IO7 pins.

Table 14. Thermal Characteristics

Parameter

Conditions

Typical (°C/W)



Airflow = 0 m/s

31.6



JMA

Airflow = 1 m/s

28.8



JMA

Airflow = 2 m/s

28.1



Airflow = 0 m/s

4.6



Airflow = 0 m/s

14.7



Airflow = 0 m/s

0.20



Airflow = 1 m/s

0.27



Airflow = 2 m/s

0.30

Figure 20. Differential Line Driver Voltage Measurement

ESD (electrostatic discharge) sensitive device.

Charged devices and circuit boards can discharge

without detection. Although this product features

patented or proprietary protection circuitry, damage

may occur on devices subjected to high energy ESD.

Therefore, proper ESD precautions should be taken to

avoid performance degradation or loss of functionality.

VOD

AP/BP

AN/BN

Figure 21. Digital I/O Drivers (DS0, 1.8 V IOVDD)

Figure 22. Digital I/O Drivers (DS0, 3.3 V IOVDD)

Figure 23. I2C Drivers (1.8 V IOVDD)

– 2.0

0.4

0.8

1.2

2.0

– 6.0

VOL

IOVDD = 1.9V @ – 40°C

IOVDD = 1.8V @ 25°C

IOVDD = 1.7V @ 125°C

– 4.0

– 8.0

1.6

0.2

0.6

1.4

1.8

SOURCE VOLTAGE (V)

VOH

1.0

2.0

3.0

4.0

– 20

VOL

IOVDD = 3.6V @ – 40°C

IOVDD = 3.3V @ 25°C

IOVDD = 3.0V @ 125°C

– 10

– 30

0.5

1.5

2.5

3.5

SOURCE VOLTAGE (V)

VOH

– 1.5

0.4

0.8

1.2

2.0

– 2.5

VOL

IOVDD = 1.9V @ – 40°C

IOVDD = 1.8V @ 25°C

– 1.0

IOVDD = 1.7V @ 125°C

– 2.0

– 3.0

– 0.5

1.6

0.2

0.6

1.4

1.8

SOURCE VOLTAGE (V)

– 3.5

– 4.5

– 4.0

– 5.0

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