Datasheet
LTC1857/LTC1858/LTC1859
2
185789fa
PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS
Supply Voltage (OV
DD
= DV
DD
= AV
DD
= V
DD
) ............. 6V
Ground Voltage Difference
DGND, AGND1, AGND2, AGND3 ........................±0.3V
Analog Input Voltage
ADC
+
, ADC
–
(Note 3) ................. (AGND1 – 0.3V) to (AV
DD
+ 0.3V)
CH0-CH7, COM ..................................................±25V
Digital Input Voltage (Note 4) .......(DGND – 0.3V) to 10V
Digital Output Voltage ..(DGND – 0.3V) to (DV
DD
+ 0.3V)
Power Dissipation ...............................................500mW
Operating Temperature Range
LTC1857C/LTC1858C/LTC1859C .............. 0°C to 70°C
LTC1857I/LTC1858I/LTC1859I .............. –40°C to 85°C
Storage Temperature Range ................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
(Note 1)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TOP VIEW
G PACKAGE
28-LEAD PLASTIC SSOP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
COM
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
MUXOUT
+
MUXOUT
–
ADC
+
ADC
–
AGND1
CONVST
RD
SCK
SDI
DGND
SDO
BUSY
OV
DD
DV
DD
AV
DD
AGND3
AGND2
REFCOMP
V
REF
T
JMAX
= 110°C, θ
JA
= 95°C/W
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC1857CG#PBF LTC1857CG#TRPBF 28-Lead Plastic SSOP 0°C to 70°C
LTC1857IG#PBF LTC1857IG#TRPBF 28-Lead Plastic SSOP –40°C to 85°C
LTC1858CG#PBF LTC1858CG#TRPBF 28-Lead Plastic SSOP 0°C to 70°C
LTC1858IG#PBF LTC1858IG#TRPBF 28-Lead Plastic SSOP –40°C to 85°C
LTC1859CG#PBF LTC1859CG#TRPBF 28-Lead Plastic SSOP 0°C to 70°C
LTC1859IG#PBF LTC1859IG#TRPBF 28-Lead Plastic SSOP –40°C to 85°C
LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC1857CG LTC1857CG#TR 28-Lead Plastic SSOP 0°C to 70°C
LTC1857IG LTC1857IG#TR 28-Lead Plastic SSOP –40°C to 85°C
LTC1858CG LTC1858CG#TR 28-Lead Plastic SSOP 0°C to 70°C
LTC1858IG LTC1858IG#TR 28-Lead Plastic SSOP –40°C to 85°C
LTC1859CG LTC1859CG#TR 28-Lead Plastic SSOP 0°C to 70°C
LTC1859IG LTC1859IG#TR 28-Lead Plastic SSOP –40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/