LTC1325 LINER [Linear Technology], LTC1325 Datasheet - Page 3

• Manufacturer Part Number: LTC1325
• Description: Microprocessor-Controlled Battery Management System
• Manufacturer: LINER [Linear Technology]

RECO
SYMBOL
V
V
I
V
V
t
t
t
t
t
t
f
t
t
f
A/D Converter
SYMBOL
t
t
t
t
t
t
t
The
temperature range.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All voltage values are with respect to the GND pin.
Note 3: V
unless otherwise stated. ADC clock is the serial CLK.
ELECTRICAL CHARACTERISTICS
OZ
dDO
dis
en
hDO
fDOUT
CLK
rPGATE
fPGATE
OSC
hDI
dsuCS
dsuDI
WHCLK
WLCLK
WHCS
WLCS
rDOUT
OL
OH
OHFET
OLFET
denotes specifications which apply over the full operating
REG
WW
within specified min and max limits, CLK (Pin 5) = 500kHz,
PARAMETER
Output Low Voltage
Output High Voltage
Hi-Z Output Leakage
DIS or PGATE Output High
DIS or PGATE Output Low
Delay Time, CLK to D
Delay Time, CS to D
Delay Time, CLK to D
Time D
D
D
Serial I/O Clock Frequency
PGATE Rise Time
PGATE Fall Time
Internal Oscillator Frequency
Offset Error
Linearity Error
Full-Scale Error
On-Channel Leakage
Off-Channel Leakage
PARAMETER
Hold Time, D
Setup Time, CS Before First CLK
Setup Time, D
CLK High Time
CLK Low Time
CS High Time Between Data Transfers
CS Low Time During Data Transfer
OUT
OUT
Rise Time
Fall Time
E DED CHARACTERISTICS
OUT
U
Remains Valid After CLK
IN
IN
After CLK
Stable Before First CLK
OUT
OUT
OUT
Hi-Z
Valid
Enabled
CONDITIONS
D
D
V
V
V
See Test Circuits
See Test Circuits
See Test Circuits
See Test Circuits
See Test Circuits
See Test Circuits
CLK Pin
C
C
Charge Mode, Fail-Safes Disabled
V
V
V
V
V
CS
DD
DD
LOAD
LOAD
IN
IN
IN
IN
IN
OUT
OUT
Channel (Note 3)
Channel (Notes 3, 4)
Channel (Note 3)
Channel ON Only (Notes 3, 5)
Channel OFF (Notes 3, 5)
= 5V
= 4.5V to 16V
= 4.5V to 16V
, I
, I
CONDITIONS
MSBF = 1
MSBF = 0
= 1500pF
= 1500pF
OUT
OUT
V
DD
= 1.6mA
= – 1.6mA
= 12V 5%, T
Note 4: Linearity error is specified between the actual end points of the
A/D transfer curve.
Note 5: Channel leakage is measured after channel selection.
Note 6: Gas gauge offset excludes A/D offset error.
Note 7: I = V
voltage with control bits VR1 = VR0 = 1, duty ratio = 1 and R
determined by the user.
A
= 25 C, unless otherwise noted.
DAC
(Duty Ratio)/R
V
SENSE
DD
MIN
MIN
150
400
2.4
0.8
25
90
43
52
– 0.05
1
1
1
, where V
TYP
TYP
111
30
DAC
is the DAC output
MAX
MAX
0.05
LTC1325
650
510
400
250
100
500
150
150
130
0.4
0.5
10
10
10
2
1
SENSE
CLK Cycles
CLK Cycles
is
UNITS
UNITS
3
LSB
LSB
LSB
kHz
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
V
A
V
V
A
A
s
s
s
s