Datasheet
LTC2172-12/
LTC2171-12/LTC2170-12
2
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pin conFiguraTionabsoluTe MaxiMuM raTings
Supply Voltages
V
DD
, OV
DD
............................................... –0.3V to 2V
Analog Input Voltage (A
IN
+
, A
IN
–
,
PAR/SER, SENSE) (Note 3) .......... –0.3V to (V
DD
+ 0.2V)
Digital Input Voltage (ENC
+
, ENC
–
, CS,
SDI, SCK) (Note 4) .................................... –0.3V to 3.9V
SDO (Note 4) ............................................. –0.3V to 3.9V
Digital Output Voltage ................ –0.3V to (OV
DD
+ 0.3V)
Operating Temperature Range
LTC2172C, LTC2171C, LTC2170C ............. 0°C to 70°C
LTC2172I, LTC2171I, LTC2170I ............–40°C to 85°C
Storage Temperature Range .................. –65°C to 150°C
(Notes 1 and 2)
1615 17 18 19
TOP VIEW
53
GND
UKG PACKAGE
52-LEAD (7mm × 8mm) PLASTIC QFN
20 21 22 23 24 25 26
5152 50 49 48 47 46 45 44 43 42 41
33
34
35
36
37
38
39
40
8
7
6
5
4
3
2
1A
IN1
+
A
IN1
–
V
CM12
A
IN2
+
A
IN2
–
REFH
REFH
REFL
REFL
A
IN3
+
A
IN3
–
V
CM34
A
IN4
+
A
IN4
–
OUT2A
+
OUT2A
–
OUT2B
+
OUT2B
–
DCO
+
DCO
–
OV
DD
OGND
FR
+
FR
–
OUT3A
+
OUT3A
–
OUT3B
+
OUT3B
–
V
DD
V
DD
SENSE
GND
V
REF
PAR/SER
SDO
GND
OUT1A
+
OUT1A
–
OUT1B
+
OUT1B
–
V
DD
V
DD
ENC
+
ENC
–
CS
SCK
SDI
GND
OUT4B
–
OUT4B
+
OUT4A
–
OUT4A
+
32
31
30
29
28
27
9
10
11
12
13
14
T
JMAX
= 150°C,
θ
JA
= 28°C/W
EXPOSED PAD (PIN 53) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2172CUKG-12#PBF LTC2172CUKG-12#TRPBF LTC2172UKG-12 52-Lead (7mm × 8mm) Plastic QFN 0°C to 70°C
LTC2172IUKG-12#PBF LTC2172IUKG-12#TRPBF LTC2172UKG-12 52-Lead (7mm × 8mm) Plastic QFN –40°C to 85°C
LTC2171CUKG-12#PBF LTC2171CUKG-12#TRPBF LTC2171UKG-12 52-Lead (7mm × 8mm) Plastic QFN 0°C to 70°C
LTC2171IUKG-12#PBF LTC2171IUKG-12#TRPBF LTC2171UKG-12 52-Lead (7mm × 8mm) Plastic QFN –40°C to 85°C
LTC2170CUKG-12#PBF LTC2170CUKG-12#TRPBF LTC2170UKG-12 52-Lead (7mm × 8mm) Plastic QFN 0°C to 70°C
LTC2170IUKG-12#PBF LTC2170IUKG-12#TRPBF LTC2170UKG-12 52-Lead (7mm × 8mm) Plastic QFN –40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/