Datasheet

LPC4370 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 2 — 21 October 2013 124 of 150
NXP Semiconductors
LPC4370
32-bit ARM Cortex-M4/M0 microcontroller
12. ADC/DAC electrical characteristics
[1] f
in
= signal input frequency. The bias current is programmable. Higher bias current allows for a higher ADC conversion frequency at
higher power consumption.
Table 34. 12-bit ADC characteristics
V
DDA(3V3)
over specified ranges; T
amb
=  40  C to +85  C; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
V
DC
DC input common mode
level
0.1 0.5 0.9 V
C
in
input capacitance single ended - 4.5 - pF
R
i
input resistance single ended; per selected
positive or negative input pin
-5 - k
V
i(range)
input voltage range differential, peak-to-peak 0.72 0.8 0.88 V
f
c(ADC)
ADC conversion
frequency
12-bit resolution - - 80 MSamples/s
f
c(ADC)
= 10 Msamples/s; f
in
= 1 MHz; bias current bits CRS[3:0] = 0000
[1]
INL integral non-linearity - 1.1 - LSB
DNL differential non-linearity - 0.7 - LSB
ENOB effective number of bits - 10.4 - -
SNR signal-to-noise ratio - 64.0 - dB
THD total harmonic distortion - -73 - dB
SFDR spurious free dynamic
range
-80 - dB
HD2 second harmonic
distortion
--84 - dB
HD3 third harmonic distortion - -75 - dB
f
c(ADC)
= 60 Msamples/s; f
in
= 1 MHz; bias current bits CRS[3:0] = 0011
[1]
INL integral non-linearity - 1.2 - LSB
DNL differential non-linearity - 0.7 - LSB
ENOB effective number of bits - 10.1 - -
SNR signal-to-noise ratio - 63 - dB
THD total harmonic distortion - -72 - dB
SFDR spurious free dynamic
range
-75 - dB
HD2 second harmonic
distortion
--79 - dB
HD3 third harmonic distortion - -75 - dB