nRF24LE1 Nordic VLSI, nRF24LE1 Datasheet - Page 160

• Manufacturer Part Number: nRF24LE1
• Manufacturer: Nordic VLSI

nRF24LE1 Preliminary Product Specification
nRF24LE1 includes a general purpose ADC with up to 14 input channels, depending on package variant.
The ADC contains an internal 1.2V reference, but can also be used with external reference or full scale
range equal to VDD. It can be operated in a single step mode with sampling under software control, or a
continuous conversion mode with a programmable sampling rate.
21.1
21.2
21.3
21.3.1
A write operation to the ADCCON1 register automatically starts a conversion, provided that the pwrup bit is
set. If the ADC is busy, the unfinished conversion is aborted and a new one initiated. Write operations to
ADCCON2 and ADCCON3 do not start a conversion. It is not advisable to change these registers while the
ADC is busy.
Revision 1.1
21
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6, 8, 10 or 12 bit resolution
Up to 14 input channels
Single ended or differential input
Full-scale range set by internal reference, external reference or VDD
Single step mode with conversion time down to 3µs
Continuous mode with 2, 4, 8 or 16 kbps sampling rate
Low current consumption; only 0.1 mA at 2 kbps
Mode for measuring supply voltage
ADC
Features
Block diagram
Functional description
Activation
ADCCON1.refsel
ADCCON1.chsel
Internal 1.2V
2/3(VDD
1/3(VDD
AIN13
AIN1
AIN0
AIN9
AIN3
VDD
ADCCON2.diffm
M
U
M
U
X
X
Figure 68. Block diagram of ADC
AIN6
AIN2
1/2
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M
U
X
Vi+
Vi-
Algorithmic
Vref
ADC
ADCDATA[11:0]