39.20 OPAMP

Table 39-27. OPAMP Electrical Specifications
Operating Conditions: V_CM = V_DD/2
Symbol	Description	Min.	Typ. ✝	Max.	Unit	Conditions
GBWP	Gain Bandwidth Product	—	5.2	—	MHz
T_ON	Turn-on time	—	1	—	µs
PM	Phase margin	—	81	—	°
SR	Slew rate rise	—	9.5	—	V/µs
SR	Slew rate fall	—	13		V/µs
V_OS	Offset	-16	< ±5	+16	mV	V_DD = 1.8-5.5V V_CM = -0.1 - (V_DD + 0.1)V Temp. = -40°C ≤ T_A ≤ +85°C
	Offset	-20	< ±8	+20	mV	V_DD = 1.8-5.5V V_CM = -0.1 - (V_DD + 0.1)V Temp. = -40°C ≤ T_A ≤ +125°C
	Offset	-2.5	±0.5	+2.5	mV	V_DD = 3V V_CM= V_DD/2 Temp. 25°C
	Input offset drift with temperature *	-120	±30	+120	µV/ºC
	Offset calibration step	—	0.5	—	mV
CMRR	Common-Mode Rejection Ratio	—	77	—	dB
PSRR	Power Supply Rejection Ratio	—	67	—	dB
A_OL	Open-loop gain	—	95	—	dB
V_ICM *	Input common-mode voltage	-0.3	—	V_DD + 0.3	V	IRSEL = `0`
V_ICM *	Input common-mode voltage	-0.3	—	V_DD - 0.7	V	IRSEL = `1`
I_SC	Short circuit sourcing current	—	33	—	mA
I_SC	Short circuit sinking current	—	27	—	mA
E_ni	Input noise voltage	—	180	—	µVpp	f = 0.1-10 Hz
e_ni	Input noise voltage density	—	100	—	nV/ $\sqrt{H z}$	f = 1 kHz
V_O	Maximum output voltage swing	—	0.15 ≤ V_O ≤ V_DD - 0.15	—	V	I_load= 1.5 mA
R_LAD	R-ladder unit resistance	—	4	—	kΩ
	V_DD/2 reference accuracy	-3	—	+3	%
	System gain accuracy with internal resistor ladder	-10	< ±3	+10	%	Inverting/Non-inverting PGA
✝ Data found in the “Typ.” column is at T_A = 25°C and V_DD = 3.0V unless otherwise specified. These parameters are for design guidance only and are not tested. * These parameters are characterized but not tested in production.