S42
Hardware User Guide
1VV0301303 Rev. 11
Page 44 of 85
2021-05-06
Not Subject to NDA
The conversion time T
CONV
is < 2µs, the minimum acquisition time is 3µs, therefore the
max. sample rate
F
SAMPLE_MAX
= 1/ (t
ACQ_MIN
+ t
CONV_MAX
) = 1 ( 3µs +2µs) = 200khz
This sample rate, allowing to capture AC signals with a max. frequency content of 100kHz,
is only available with custom FW.
ADC/TWI and ADC/LUA FW versions are made for capturing DC signals and increase
resolution by oversampling.
Please refer to
[1] Nordic: nRF52_Series_Reference_Manual and
[2] Nordic: nRF52832_PS v1.x.pdf (Product Specification)
For detailed information according the pin mapping documentation Nordic nRF52 pins to
module pins, please contact Telit using the information given in section 1.5 Related
Documents
The max. allowed source resistance of V
SOURCE
is limited in dependency of the acquisition
time.
TACQ /µs
Max. resistance VSOURCE /k
Ω
3
10
5
40
10
100
15
200
20
400
40
800
