2Maxim Integrated
MAX14920/MAX14921
High-Accuracy 12-/16-Cell Measurement AFEs
(All voltages referenced to AGND.)
V
P
.........................................................................-0.3V to +70V
LDOIN .............................................. (V
A
- 0.3V) to (V
P
+ 0.3V)
V
A
...........................................................................-0.3V to +6V
V
L
........................................................................-0.3V to +5.5V
CV0, DGND ..........................................................-0.3V to +0.3V
SCLK, SDI, CS, EN ..................................................-0.3V to +6V
SDO, SAMPL ............................................... -0.3V to (V
L
+ 0.3V)
CV1 .......................................................................... -0.3V to +6V
CV2–CV12 .............................(V
CV
(n* - 1)
- 0.3V)
to (V
P
+ 0.3V)
CT1–CT12 .................................... -0.3V
to (V
CV1
–V
CV12
+ 0.3V)
CB2–CB12 .......................................-0.3V
to (V
CV(n* - 1)
+ 0.3V)
CV2–CV16
(MAX14921 only) .............. (V
CV(m** - 1)
- 0.3V)
to (V
P
+ 0.3V)
CT1–CT16
(MAX14921 only) ......................-0.3V to (V
CV1–
V
CV16
+ 0.3V)
CB2–CB16
(MAX14921 only) .......................-0.3V
to (V
CV(m** - 1)
+ 0.3V)
BA1 ......................................................... -0.3V to (V
CV1
+ 0.3V)
BA2–BA12 .....(V
CV(n* - 1)
- 0.3V)
to min((V
CVn*
+ 0.3V) or +6V)
BA2–BA16 (MAX14921 only) ............(V
CV(m** - 1)
- 0.3V)
to min
((V
CVm**
+ 0.3V) or +6V)
AOUT, T1, T2, T3 ........................................-0.3V to (V
A
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
64-Pin TQFP-EP (derate 31.3mW/°C above +70°C)...2508mW
80-Pin TQFP (derate 23.3mW/°C above +70°C) ........1860mW
Operating Temperature Range .......................... -40NC to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range ............................ -65NC to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
Soldering Temperature (reflow) ......................................+260°C
*n = 2–12
**m = 2–16
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(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)
Junction-to-Ambient Thermal Resistance (q
JA
)
64-Pin TQFP-EP..........................................................31.9°C/W
80-Pin TQFP ..................................................................43°C/W
Junction-to-Case Thermal Resistance (q
JC
)
64-Pin TQFP-EP...............................................................1°C/W
80-Pin TQFP ....................................................................8°C/W
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
PACKAGE THERMAL CHARACTERISTICS (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
POWER SUPPLIES
V
P
Supply Voltage V
P
+6 +65 V
V
P
Supply Current
I
P_OFF
EN = low or LOPW = 1 1
FA
I
P_ON
EN = high 65 150
LDOIN Supply Voltage V
LDOIN
+6 +65 V
LDOIN Supply Current
I
LDOIN_OFF
EN = low, I
A
= 0A 75 125
FA
I
LDOIN_ON
EN = high, I
A
= 0A 350 500
V
A
Analog Supply Voltage V
A
V
A
supply externally, V
A
= V
LDOIN
+4.75 +5 +5.25 V
V
A
Analog Supply Current
I
A_OFF
EN = low, V
A
= V
LDOIN
50 75
FA
I
A_ON
EN = high, V
A
= V
LDOIN
350 450
V
L
Supply Voltage V
L
+1.62 +5.5 V
V
L
Supply Current I
L
All logic inputs static, held at logic-low
or logic-high
2.5 5 FA
评论0
最新资源