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MAX14920 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX14920
Description  High-Accuracy 12-/16-Cell Measurement AFEs
PDF  30 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX14920 Datasheet(HTML) 4 Page - Maxim Integrated Products

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4
Maxim Integrated
MAX14920/MAX14921
High-Accuracy 12-/16-Cell Measurement AFEs
DC ELECTRICAL CHARACTERISTICS (continued)
(VP = +65V, DGND = AGND, VL = VEN = +3.3V, VA = +5V, CSAMPLE = 1FF, TA = -40°C to +85°C, unless otherwise noted. Typical
values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ANALOG OUTPUT (AOUT)
Output Signal Range
VAOUT
Reference to AGND
+0.3
VA - 0.3
V
Amplifier Offset Voltage
VOFFSET
VAOUT = +3.3V, after self-calibration
(Note 5)
Q
50
Q
100
F
V
Temperature Offset Drift
If not recalibrated
Q
1.5
F
V/°C
Gain
A_V
Gain = VAOUT/VD
1
V/V
Output Error
VO_ERR
(Note 4)
-0.5
+0.5
mV
Amplifier Gain Error
VGAIN_ERR
ROUT = 100kI, VD = 2V to 4.5V (Note 6)
-0.2
+0.2
mV
VP Monitor Voltage
VPMON
[SC0, SC1, SC2, SC3]
= [0, 0, 1, 1]
MAX14920
VP/12
V
MAX14921
VP/16
VP Monitor Accuracy
VPMONA
[SC0, SC1, SC2, SC3] =
[0, 0, 1, 1]
-0.25
0
+2.5
%
CHARGE-BALANCE DRIVERS (BA_)
Output Low
VBAL
IBA_ = 30µA, VCV(n) - VCV(n - 1) = +3.3V
(Note 3)
VCV(n - 1)
VCV(n - 1)
+ 0.9
V
Output High
VBAH
IBA_ = -30µA, VCV(n) - VCV(n - 1) = +3.3V
(Note 3)
VCV(n) - 1.5
VCV(n)
V
Pulldown Resistance
RPDWN
10.5
14.8
21.5
kI
LOGIC OUTPUT (SDO)
Output Low Voltage
VOL
ISINK = 10mA
+0.4
V
Output High Voltage
VOH
ISOURCE = 0.5mA
VL - 0.25
V
Output Leakage Current
IL
VCS = VL
-1
+1
F
A
LOGIC INPUTS (SDI, SCLK, EN, SAMPL)
Input Low Voltage
VIL
VL < +2.3V
0.2 x VL
V
+2.3V < VL < +5.5V
0.3 x VL
Input High Voltage
VHL
VL < +2.3V
0.8 x VL
V
+2.3V < VL < +5.5V
0.7 x VL
Input Leakage Current
IL
-1
+1
F
A
DYNAMIC CHARACTERISTICS
AOUT Settling Time
tSET
Measured between channels with
+4V signal change. Settling to Q1mV
accuracy, CLOAD = 100pF (Figure 1)
5
F
s
Sampling Time
tSAMPL
CSAMPLE = 1FF, during charge injection
error calibration
40
ms
Holding Delay Time
tHD
Delay from SMPLB set to 1 or SAMPL
falling edge to holding of all cell voltages
0.5
F
s



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