Si7034-A10

Rev. 1.0

5

Conversion Time

Normal Mode, RH conversion1

5.8

8.5

ms

Normal Mode, Temperature conversion1

3.7

6

ms

Fast Mode, parallel Temp and RH conver-

sion2

0.9

1.5

ms

Fast Mode, additional RH conversion

time4

1.6

2.5

ms

Powerup Time

From VDD

≥ 1.67 V to ready for a

conversion, 25 °C

—

10

15

ms

From VDD

≥ 1.67 V to ready for a

conversion, full temperature range

—

—

50

ms

After issuing a software reset

command

—1.2

2.0

ms

1.67

 V

Parameter

Symbol

Test Condition

Min

Typ

Max

Unit

Hysteresis

High-to-low versus

low-to-high transition

——

V

SCLK Frequency2

—

—

400

kHz

SCL High Time

0.6

—

—

µs

SCL Low Time

1.3

—

—

µs

Start Hold Time

0.6

—

—

µs

Notes:

2. Depending on the conversion command, the Si7034 may hold the master during the conversion (clock stretch). At

above 300 kHz SCL, the Si7034 may hold the master briefly for user register and device ID transactions. At the highest

3. Pulses up to and including 50 ns will be suppressed.

Table 2. General Specifications (Continued)

1.67

 V

Parameter

Symbol

Test Condition

Min

Typ

Max

Unit

Notes:

1. In Normal Mode, a temperature conversion is performed first, followed by an RH conversion.

2. In Fast Mode, both a temperature conversion and an RH conversion are initiated at the same time and occur in parallel.

3. Current consumption of RH conversion after the temperature conversion has finished. In Fast Mode, the temperature

conversion finishes before the RH conversion.

4. Additional time for RH conversion after the temperature conversion has finished.

6. Occurs once during powerup. Duration is <5 msec.

is <100

9. Additional current consumption when HTRE bit enabled.