LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
No Latency ∆∑ is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners. Protected by U.S. Patents including 6208279, 6411242,
7088280, 7164378.
Typical applicaTion
2.7V TO 5.5V
0.1µF
0.1µF
10k
10k
0.1µF
IN
+
LTC2462
IN
–
10k
R
REF
–
REFOUT
0.1µF
COMP V
CC
SCK
SDO
CS
GND
24602 TA01a
V
REF
vs Temperature
1.2520
REFERENCE OUTPUT VOLTAGE (V)
1.2515
1.2510
1.2505
1.2500
1.2495
1.2490
1.2485
1.2480
–50
–30
–10 10
30
50
TEMPERATURE (°C)
70
90
0.1µF
10µF
SPI
INTERFACE
24602 TA01b
24602fa
1
LTC2460/LTC2462
absoluTe MaxiMuM raTings
(Notes 1, 2)
Supply Voltage (V
CC
) ................................... –0.3V to 6V
Analog Input Voltage
(IN
+
, IN
–
, IN, REF
–
,
COMP, REFOUT) ...........................–0.3V to (V
CC
+ 0.3V)
Digital Voltage
(V
SDI
, V
SDO
, V
SCK
, V
CS
) ................–0.3V to (V
CC
+ 0.3V)
Storage Temperature Range .................. –65°C to 150°C
Operating Temperature Range
LTC2460C/LTC2462C ............................... 0°C to 70°C
LTC2460I/LTC2462I .............................–40°C to 85°C
pin conFiguraTion
LTC2462
TOP VIEW
REFOUT
COMP
CS
SDI
SCK
SDO
1
2
3
4
5
6
12 V
CC
11 GND
10 IN
–
LTC2462
TOP VIEW
REFOUT
COMP
CS
SDI
SCK
SDO
1
2
3
4
5
6
12
11
10
9
8
7
V
CC
GND
IN
–
IN
+
REF
–
GND
9 IN
+
8 REF
–
7 GND
DD PACKAGE
12-LEAD (3mm
×
3mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 43°C/W
EXPOSED PAD (PIN 13) PCB GROUND CONNECTION OPTIONAL
LTC2460
TOP VIEW
REFOUT
COMP
CS
SDI
SCK
SDO
1
2
3
4
5
6
12 V
CC
11 GND
10 GND
9 IN
8 REF
–
7 GND
LTC2460
MS PACKAGE
12-LEAD PLASTIC MSOP
T
JMAX
= 125°C,
θ
JA
= 120°C/W
TOP VIEW
REFOUT
COMP
CS
SDI
SCK
SDO
1
2
3
4
5
6
12
11
10
9
8
7
V
CC
GND
GND
IN
REF
–
GND
DD PACKAGE
12-LEAD (3mm
×
3mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 43°C/W
EXPOSED PAD (PIN 13) PCB GROUND CONNECTION OPTIONAL
MS PACKAGE
12-LEAD PLASTIC MSOP
T
JMAX
= 125°C,
θ
JA
= 120°C/W
orDer inForMaTion
LEAD FREE FINISH
LTC2460CDD#PBF
LTC2460IDD#PBF
LTC2460CMS#PBF
LTC2460IMS#PBF
LTC2462CDD#PBF
LTC2462IDD#PBF
LTC2462CMS#PBF
LTC2462IMS#PBF
TAPE AND REEL
LTC2460CDD#TRPBF
LTC2460IDD#TRPBF
LTC2460CMS#TRPBF
LTC2460IMS#TRPBF
LTC2462CDD#TRPBF
LTC2462IDD#TRPBF
LTC2462CMS#TRPBF
LTC2462IMS#TRPBF
PART MARKING*
LFDQ
LFDQ
2460
2460
LDXM
LDXM
2462
2462
PACKAGE DESCRIPTION
12-Lead Plastic (3mm × 3mm) DFN
12-Lead Plastic (3mm × 3mm) DFN
12-Lead Plastic MSOP-12
12-Lead Plastic MSOP-12
12-Lead Plastic (3mm × 3mm) DFN
12-Lead Plastic (3mm × 3mm) DFN
12-Lead Plastic MSOP-12
12-Lead Plastic MSOP-12
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–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.
Consult LTC Marketing for information on non-standard lead based finish parts.
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/
24602fa
2
LTC2460/LTC2462
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 2)
PARAMETER
Resolution (No Missing Codes)
Integral Nonlinearity
Offset Error
Offset Error Drift
Gain Error
Gain Error Drift
Includes Contributions of ADC and Internal Reference
Includes Contributions of ADC and Internal Reference
C-Grade
I-Grade
l
l
l
elecTrical characTerisTics
CONDITIONS
(Note 3)
(Note 4)
MIN
l
l
l
TYP
1
2
0.02
±0.01
±2
±5
2.2
80
MAX
10
15
±0.25
±10
UNITS
Bits
LSB
LSB
LSB/°C
% of FS
ppm/°C
ppm/°C
µV
RMS
dB
16
Transition Noise
Power Supply Rejection DC
analog inpuTs
specifications are at T
A
= 25°C.
PARAMETER
SYMBOL
V
IN+
V
IN–
V
IN
V
OR+
, V
UR+
V
OR–
, V
UR–
C
IN
The
l
denotes the specifications which apply over the full operating temperature range, otherwise
CONDITIONS
LTC2462
LTC2462
LTC2460
V
IN–
= 0.625V (See Figure 3)
V
IN+
= 0.625V (See Figure 3)
V
IN
= GND (Note 8)
V
IN
= V
CC
(Note 8)
V
IN
= GND (Note 8)
V
IN
= V
CC
(Note 8)
l
l
l
l
l
l
l
MIN
0
0
0
TYP
MAX
V
REF
V
REF
V
REF
UNITS
V
V
V
LSB
LSB
pF
Positive Input Voltage Range
Negative Input Voltage Range
Input Voltage Range
Overrange/Underrange Voltage, IN
+
Overrange/Underrange Voltage, IN–
IN
+
, IN
–
, IN Sampling Capacitance
8
8
0.35
–10
–10
–10
–10
1.247
1
1
1
1
50
l
I
DC_LEAK(IN+, IN–, IN)
IN
+
, IN
–
DC Leakage Current (LTC2462)
IN DC Leakage Current (LTC2460)
I
DC_LEAK(IN–)
I
CONV
V
REF
IN
–
DC Leakage Current
Input Sampling Current (Note 5)
Reference Output Voltage
Reference Voltage Coefficient
10
10
10
10
1.253
±10
nA
nA
nA
nA
nA
V
ppm/°C
ppm/°C
dB
mA
µA
mV/mA
nV/√Hz
1.25
±2
±5
–90
(Note 11)
C-Grade
I-Grade
2.7V ≤ V
CC
≤ 5.5V
V
CC
= 5.5, Forcing Output to GND
V
CC
= 5.5, Forcing Output to GND
2.7V ≤ V
CC
≤ 5.5V, I
OUT
= 100μA Sourcing
,
,
C
COMP
= 0.1μF C
REFOUT
= 0.1μF At f = 1kHz
l
Reference Line Regulation
Reference Short Circuit Current
COMP Pin Short Circuit Current
Reference Load Regulation
Reference Output Noise Density
l
l
35
200
3.5
30
The
l
denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C.
SYMBOL
V
CC
I
CC
PARAMETER
Supply Voltage
Supply Current
Conversion
Nap
Sleep
CONDITIONS
l
l
l
l
power requireMenTs
MIN
2.7
TYP
MAX
5.5
UNITS
V
mA
µA
µA
24602fa
1.5
800
0.2
2.5
1500
2
3
LTC2460/LTC2462
operating temperature range,otherwise specifications are at T
A
= 25°C. (Note 2)
SYMBOL
V
IH
V
IL
I
IN
C
IN
V
OH
V
OL
I
OZ
PARAMETER
High Level Input Voltage
Low Level Input Voltage
Digital Input Current
Digital Input Capacitance
High Level Output Voltage
Low Level Output Voltage
Hi-Z Output Leakage Current
I
O
= –800µA
I
O
= 1.6mA
l
l
l
DigiTal inpuTs anD DigiTal ouTpuTs
The
l
denotes the specifications which apply over the full
CONDITIONS
l
l
l
MIN
V
CC
– 0.3
TYP
MAX
0.3
UNITS
V
V
µA
pF
V
–10
10
V
CC
– 0.5
10
0.4
–10
10
V
µA
TiMing characTerisTics
The
l
denotes the specifications which apply over the full operating temperature
range,otherwise specifications are at T
A
= 25°C.
PARAMETER
Conversion Time
SCK Frequency Range
SCK Low Period
SCK High Period
CS
Falling Edge to SDO Low Z
CS
Rising Edge to SDO High Z
CS
Falling Edge to SCK Falling Edge
SCK Falling Edge to SDO Valid
SDI Setup Before SCK↑
SDI Hold After SCK↑
(Note 7)
(Note 3)
(Note 3)
(Notes 7, 8)
(Notes 7, 8)
t
CONV
f
SCK
t
lSCK
t
hSCK
t
1
t
2
t
3
t
KQ
t
4
t
5
SYMBOL
CONDITIONS
l
l
l
l
l
l
l
l
l
l
MIN
13
250
250
0
0
100
0
100
100
TYP
16.6
MAX
23
2
UNITS
ms
MHz
ns
ns
100
100
100
ns
ns
ns
ns
ns
ns
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2.
All voltage values are with respect to GND. V
CC
= 2.7V to 5.5V
unless otherwise specified.
V
REFCM
= V
REF
/2, FS = V
REF
V
IN
= V
IN+
– V
IN–
, –V
REF
≤ V
IN
≤ V
REF
; V
INCM
= (V
IN+
+ V
IN–
)/2.
Note 3.
Guaranteed by design, not subject to test.
Note 4.
Integral nonlinearity is defined as the deviation of a code from a
straight line passing through the actual endpoints of the transfer curve.
Guaranteed by design and test correlation.
Note 5:
CS
= V
CC
. A positive current is flowing into the DUT pin.
Note 6:
SCK = V
CC
or GND. SDO is high impedance.
Note 7:
See Figure 4.
Note 8:
See Figure 5.
Note 9:
Input sampling current is the average input current drawn from the
input sampling network while the LTC2460/LTC2462 is actively sampling
the input.
Note 10:
A positive current is flowing into the DUT pin.
Note 11:
Temperature coefficient is calculated by dividing the maximum
change in output voltage by the specified temperature range.
射频识别(Radio Frequency Identification，RFID)技术是一种利用无线射频通信实现的非接触式自动识别技术，与目前广泛采用的条形码技术相比，RFID具有容量大、识别距离远、穿透能力强、抗污性强等特点。RFID技术已经发展得比较成熟并获得了大规模商用，但超高频RFID技术相对滞后。本文分析了射频芯片nRF9E5的功能特性，并将其用于RFID系统中，设计了一套有源超高频(...[详细]
便携式医疗设备的特殊性决定了它们应该是对用户友好的、必须工作在无菌环境下，并且空间占用小、耗能低。 同时，便携式医疗设备还需要足够的计算能力以便处理医疗数据，能够连接到无线或有线接口以便记录和发送数据。从设计人员的角度考虑，上述需求需要低功耗的单片机（MCU）和数字信号控制器（Digital Signal Controller，DSC）。 正是有了嵌入式处理器，设计人员才有可能设...[详细]
控制器局部网CAN(Controller Area Network)属于现场总线的一种，是一种有效支持分布式控制或实时控制的串行通信网络，被公认为是最有前途的现场总线之一。 在工业控制系统中，电动执行器是电动单元组合仪表中一个很重要的执行单元。它由控制电路和执行机构两个在电路上完全独立的部分组成，可接收来自调节器的电控信号，将其线性地转换成机械转角或直线位移，用来操纵风门、挡板、阀门等...[详细]
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
