MAX14920 Datasheet, PDF (3/29 Pages) Maxim Integrated Products – High-Accuracy 12-/16-Cell Measurement AFEs

MAX14920 / MAX14921
High-Accuracy 12-/16-Cell Measurement AFEs
DC ELECTRICAL CHARACTERISTICS (continued)
(V_P = +65V, DGND = AGND, V_L = V_EN = +3.3V, V_A = +5V, C_SAMPLE = 1FF, T_A = -40°C to +85°C, unless otherwise noted. Typical
values are at T_A = +25°C.) (Note 2)
PARAMETER
V_P UVLO
UVLO Hysteresis
LDOIN UVLO
V_A UVLO
V_L UVLO
LDO Output Voltage
ANALOG INPUTS (T1, T2, T3)
Input Signal Range
On-Resistance
Input Leakage Current
CAPACITOR INPUTS (CT_)
Capacitor Discharge Current
ANALOG INPUTS (CV_)
Differential Input Signal Range
for Guaranteed Accuracy
CV1 Input Voltage Range
CV2–CV12 Input Voltage Range
(MAX14920)
CV2–CV16 Input Voltage Range
(MAX14921)
Input Leakage Current
Balancing Input Current
Sample Switch On-Resistance
Cell Undervoltage Threshold
Cell Overvoltage Threshold
SYMBOL
UV_V_PVTH
UV_V_PHYST
UV_LDOIN_VT
UV_V_AVTH
UV_V_LVTH
V_{A_LDO_OUT}
V_P rising
CONDITIONS
V_LDOIN rising
V_A rising
V_L rising
0 < I_LOAD < 10mA
V_T
R_ONA
I_{T_LEAK}
Reference to AGND
T_ route to buffer amplifier
T_ route to AOUT
I_{LT_}
Hold phase, SAMPL = low
V_Dn
V_CV1
V_CVn
V_CVn – V_CVn-1 (Note 3)
n ≥ 2, V_CVn ≥ V_CVn-1 (Note 3)
V_CVm
I_{LS_}
I_{LH_}
I_{LC_}
I_{LD_}
I_{LB_}
R_SAMPLE
R_SWCAL
UV_V_CVTH
OV_V_CVTH
m ≥ 2, V_CVm ≥ V_CVm-1 (Note 3)
During sampling phase
During holding phase
During calibration
During diagnostics, DIAG = 1
BA_ active, V_CVn - V_CVn-1 = +4.5V
(Note 3)
V_CVn > +2V, I_SINK = 2mA (Note 3)
V_CVn > +1.5V, I_SINK = 1mA (Note 3)
V_CVn > +2V, I_SINK = 2mA (Note 3)
An undervoltage sets the associated SPI
Cn bit
An overvoltage sets the associated SPI
Cn bit
MIN
+5.25
+4.75
0
-1
-1
-1
+0.5
0
+1.5
+1.5
-1
-1
-1
+1.4
TYP MAX UNITS
+6
V
200
mV
+6
V
+4.7
V
+1.6
V
+5 +5.25
V
V_A
V
200
I
+1
FA
+1
+1
FA
+4.5
V
+5
V
+65
V
+65
V
+1
+10
FA
+10
10
6.5
12
mA
80
150
90
I
800 16,000
+1.5 +1.6
V
V_A
V
Maxim Integrated
  3