1840 查看數據表（PDF） - Linear Technology
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1840 Datasheet PDF : 12 Pages
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LTC1840
ABSOLUTE AXI U RATI GS
(Note 1)
VCC to GND .................................................... –0.3 to 6V
A0, A1 ............................................. –0.3 to (VCC + 0.3V)
IDACOUTA, IDACOUTB ............................. –0.3 to (VCC + 0.75V)
All other pins ................................................. –0.3 to 6V
Operating Temperature
LTC1840C ............................................... 0°C to 70°C
LTC1840I .............................................–40°C to 85°C
Storage Temperature Range ..................–65°C to 125°C
Lead Temperature (Soldering, 10 sec).................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
SCL 1
SDA 2
A1 3
A0 4
FAULT 5
GPIO1 6
GPIO2 7
GND 8
TOP VIEW
16 VCC
15 IDACOUTA
14 IDACOUTB
13 BLAST
12 TACHB
11 TACHA
10 GPIO4
9 GPIO3
GN PACKAGE
16-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 110°C/W
ORDER PART
NUMBER
LTC1840CGN
LTC1840IGN
GN PART
MARKING
1840
1840I
Consult LTC marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 3V
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
DACs
n
Resolution
8
Bits
DNL
INL
ZSE
IDACOUTA(FS),
IDACOUTB(FS)
Power Supply
Differential Nonlinearity
Integral Nonlinearity
Zero-Scale Error
Output Voltage Rejection
Output Voltage Rejection
Full-Scale Current
VDACOUT = 1.1V, Guaranteed Monotonic
q
±0.9
LSB
VDACOUT = 1.1V
±4
LSB
VDACOUT = 1.1V
–0.2 0.1
2
µA
1.1V< VDACOUT < 3.75V
±1
LSB
VCC = 5.75V, 1.1V < VDACOUT < 6.5V
±2
LSB
Sinking
VDACOUT = 1.1V
97
q 95
103
µA
105
µA
VCC
Positive Supply Voltage
ICC
Supply Current
VUVLO
UVLO/POR Voltage
VUVHYS
UVLO/POR Voltage Hysteresis
Oscillator Performance
VCC = 3V, A0 and A1 Floating
VCC = 5V, A0 and A1 Floating
(Note 2)
q 2.7
5.75
V
400 600
µA
500 750
µA
q 2.1
2.4
2.69
V
20
90
160
mV
fOSC
PSRR
Oscillator Frequency
Supply Sensitivity
GPIO Performance
2.7V < VCC < 5.75V
q 47
50
53
kHz
0.1
0.5
%/V
IO
VIL
VIH
VIHYST
ILEAK
Output Current Sink
Digital Input Low Voltage
Digital Input High Voltage
Input Hysteresis
Leakage
VGPIOX = 0.7V, Internal Pull-Down Enabled
Internal Pull-Down Disabled
Internal Pull-Down Disabled
(Note 2)
Internal Pull-Down Disabled
q 10
q
q 0.7VCC
50
mA
0.3VCC
V
V
mV
±1
µA
1840f
2
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