A d v a nce d I n fo rm a t i o n

20

Linear Technology / Dust Networks

Eterna Datasheet

High Drive

- 0.3

†

+ 0.3

†

Input leakage current

50

nA

8.6

Temperature Sensor Characteristics

The following characteristics are measured with VSUPPLY = 3.6 V at 25 °C, unless otherwise specified.

Table 11

Temperature Sensor Characteristics

Parameter

Conditions

Min

Typ

Max

Units

Offset

Temperature offset error at 25 ºC

±0.25

°C

Slope error

Slope error from -40 to +85 ºC

±0.033

°C/°C

8.7

ADC Characteristics

The following characteristics are measured with VSUPPLY = 3.6 V at 25 °C, unless otherwise specified.

Table 12

ADC Characteristics

Parameter

Conditions

Min

Typ

Max

Units

Variable gain amplifier

Gain

Gain error

1

8

1

%

Digital to analog converter (DAC)

Offset output

Differential non-linearity (DNL)

1.8/16

1.8

7.2

V

mV

Analog to digital converter (ADC)

Full-scale, signal

Resolution

Offset

Differential non-linearity (DNL)

Integral non-linearity (INL)

Settling time

Conversion time

Current consumption

Midscale

10-kOhm source impedance

1.80

1.8

±4

1

1

10

20

50

V

mV

LSB

LSB

LSB

µs

µs

µA

Analog Inputs*

Load

Input resistance

17

1

35

2

pF

kOhm

* The analog inputs to the ADC can be model as a series resistor to a load capacitor. At a minimum the entire circuit,

including the source impedance for the signal driving the analog input should be designed to settle to within ¼ LSB within

the sampling window to match the performance of the ADC.

8.8

System Characteristics

The following characteristics are measured with VSUPPLY = 3.6 V at 25 °C, unless otherwise specified.

Table 13

System Characteristics

Parameter

Conditions

Min

Typ

Max

Units

Doze to Active state delay

5

µs

Doze to Radio TX or RX

1.2

ms

Start from Doze state

4

µC

Radio baud rate

250

kbps

RESETn pulse width

125

µs