SAADC Electrical specification

SAADC Electrical Specification


Symbol	Description	Min.	Typ.	Max.	Units
DNL₁₀	Differential non-linearity, 10-bit resolution	1	<3		LSB11b
V_OS	Differential offset error (calibrated), 10-bit resolution ^{^a}	-5	0	5	LSB10b
f_SAMPLE	Maximum sampling rate			2000	kHz
f_BW,NS1	Input signal bandwidth for NOISESHAPE=NS1			40	kHz
f_BW,NS2	Input signal bandwidth for NOISESHAPE=NS2			20	kHz
t_ACQ,2k	Acquisition time (configurable), source Resistance <= 2kOhm		0.25		µs
t_ACQ,10k	Acquisition time (configurable), source Resistance <= 10kOhm		0.5		µs
t_ACQ,20k	Acquisition time (configurable), source Resistance <= 20kOhm		1		µs
t_ACQ,40k	Acquisition time (configurable), source Resistance <= 40kOhm		2		µs
t_ACQ,100k	Acquisition time (configurable), source Resistance <= 100kOhm		5		µs
t_ACQ,200k	Acquisition time (configurable), source Resistance <= 200kOhm		10		µs
t_ACQ,400k	Acquisition time (configurable), source Resistance <= 400kOhm		20		µs
t_ACQ,800k	Acquisition time (configurable), source Resistance <= 800kOhm		40		µs
t_CONV	Conversion time		0.5		µs
E_G2/5	Error^{^b} for Gain = 2/5	-1.2		1.2	%
E_G1/2	Error^{^b} for Gain = 1/2	-1.2		1.2	%
E_G1	Error^{^b} for Gain = 1	-1.2		1.2	%
E_G2	Error^{^b} for Gain = 2	-1.2		1.2	%
R_INPUT	Input resistance for input frequencies in range 0-200 kHz		735		kΩ
R_INPUT	Input resistance for input frequencies in range 200 kHz - 1 MHz	157			kΩ
E_NOB	Effective number of bits, differential mode, 12-bit resolution, 1/1 gain, 250 ns acquisition time, HFXO, 2 Msps		9		Bit
S_NDR	Peak signal to noise and distortion ratio, differential mode, 12-bit resolution, 1/1 gain, 250 ns acquisition time, HFXO, 2 Msps		56		dB
S_FDR	Spurious free dynamic range, differential mode, 12-bit resolution, 1/1 gain, 250 ns acquisition time, HFXO, 2 Msps		60		dBc

^a Digital output code at zero volt differential input.

^b Does not include temperature drift