Datasheet
LTC2157-12/
LTC2156-12/LTC2155-12
2
21576512f
ABSOLUTE MAXIMUM RATINGS
Supply Voltage
V
DD
, OV
DD
................................................ –0.3V to 2V
Analog Input Voltage
A
INA/B
+
, A
INA/B
–
, PAR/SER,
SENSE (Note 3)
........................ –0.3V to (V
DD
+ 0.2V)
Digital Input Voltage
ENC
+
, ENC
–
(Note 3) ................ –0.3V to (V
DD
+ 0.3V)
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
LTC2157C, LTC2156C, LTC2155C
............ 0°C to 70°C
LTC2157I, LTC2156I, LTC2155I ............ –40°C to 85°C
Storage Temperature Range
.................. –65°C to 150°C
(Notes 1, 2)
PIN CONFIGURATION
TOP VIEW
UP PACKAGE
64-LEAD (9mm × 9mm) PLASTIC QFN
65
GND
V
DD
1
V
DD
2
GND 3
A
INA
+
4
A
INA
–
5
GND 6
SENSE
7
V
REF
8
GND 9
V
CM
10
GND 11
A
INB
–
12
A
INB
+
13
GND 14
V
DD
15
V
DD
16
48 OGND
47 DA2_3
+
46 DA2_3
–
45 DA0_1
+
44 DA0_1
–
43 NC
42 NC
41 CLKOUT
+
40 CLKOUT
–
39 DB10_11
+
38 DB10_11
–
37 DB8_9
+
36 DB8_9
–
35 DB6_7
+
34 DB6_7
–
33 OGND
64 V
DD
63 PAR/SER
62 CS
61 SCK
60 SDI
59 SDO
58 GND
57 DA10_11
+
56 DA10_11
–
55 DA8_9
+
54 DA8_9
–
53 DA6_7
+
52 DA6_7
–
51 DA4_5
+
50 DA4_5
–
49 OV
DD
V
DD
17
GND 18
ENC
+
19
ENC
–
20
GND 21
OF
–
22
OF
+
23
NC 24
NC
25
DB0_1
–
26
DB0_1
+
27
DB2_3
–
28
DB2_3
+
29
DB4_5
–
30
DB4_5
+
31
OV
DD
32
T
JMAX
= 150°C, θ
JA
= 20°C/W
EXPOSED PAD (PIN 65) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2157CUP-12#PBF LTC2157CUP-12#TRPBF LTC2157UP-12
64-Lead (9mm × 9mm) Plastic QFN
0°C to 70°C
LTC2157IUP-12#PBF LTC2157IUP-12#TRPBF LTC2157UP-12
64-Lead (9mm × 9mm) Plastic QFN
–40°C to 85°C
LTC2156CUP-12#PBF LTC2156CUP-12#TRPBF LTC2156UP-12
64-Lead (9mm × 9mm) Plastic QFN
0°C to 70°C
LTC2156IUP-12#PBF LTC2156IUP-12#TRPBF LTC2156UP-12
64-Lead (9mm × 9mm) Plastic QFN
–40°C to 85°C
LTC2155CUP-12#PBF LTC2155CUP-12#TRPBF LTC2155UP-12
64-Lead (9mm × 9mm) Plastic QFN
0°C to 70°C
LTC2155IUP-12#PBF LTC2155IUP-12#TRPBF LTC2155UP-12
64-Lead (9mm × 9mm) 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/