39.20 OPAMP

Table 39-27. OPAMP Electrical Specifications
Operating Conditions:
  • VCM = VDD/2
Symbol Description Min. Typ. ✝ Max. Unit Conditions
GBWP Gain Bandwidth Product — 5.2 — MHz
TON Turn-on time — 1 — µs
PM Phase margin — 81 — °
SR Slew rate rise — 9.5 — V/µs
Slew rate fall — 13 V/µs
VOS Offset -16 < ±5 +16 mV

VDD = 1.8-5.5V
VCM = -0.1 - (VDD + 0.1)V
Temp. = -40°C ≤ TA ≤ +85°C
Offset -20 < ±8 +20 mV

VDD = 1.8-5.5V
VCM = -0.1 - (VDD + 0.1)V
Temp. = -40°C ≤ TA ≤ +125°C
Offset -2.5 ±0.5 +2.5 mV

VDD = 3V
VCM= VDD/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
AOL Open-loop gain — 95 — dB
VICM * Input common-mode voltage -0.3 — VDD + 0.3 V IRSEL = 0
Input common-mode voltage -0.3 — VDD - 0.7 V IRSEL = 1
ISC Short circuit sourcing current — 33 — mA
Short circuit sinking current — 27 — mA
Eni Input noise voltage — 180 — µVpp f = 0.1-10 Hz
eni Input noise voltage density — 100 — nV/ H z f = 1 kHz
VO Maximum output voltage swing — 0.15 ≤ VO ≤ VDD - 0.15 — V Iload= 1.5 mA
RLAD R-ladder unit resistance — 4 — kΩ
VDD/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 TA = 25°C and VDD = 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.