Digital Output Ground Voltage (OGND) ....... –0.3V to 1V
Analog Input Voltage (Note 3) ..... –0.3V to (V
DD
+ 0.3V)
Digital Input Voltage .................... –0.3V to (V
DD
+ 0.3V)
Digital Output Voltage ............... –0.3V to (OV
DD
+ 0.3V)
PI CO FIGURATIO
64 GND
63 V
DD
62 V
DD
61 GND
60 V
CM
59 SENSE
58 MODE
57 LVDS
56 OF
+
/OFA
55 OF
–
/DA11
54 D11
+
/DA10
53 D11
–
/DA9
52 D10
+
/DA8
51 D10
–
/DA7
50 OGND
49 OV
DD
A
IN+
1
A
IN+
2
A
IN–
3
A
IN–
4
REFHA 5
REFHA 6
REFLB 7
REFLB 8
REFHB 9
REFHB 10
REFLA 11
REFLA 12
V
DD
13
V
DD
14
V
DD
15
GND 16
65
48 D9
+
/DA6
47 D9
–
/DA5
46 D8
+
/DA4
45 D8
–
/DA3
44 D7
+
/DA2
43 D7
–
/DA1
42 OV
DD
41 OGND
40 D6
+
/DA0
39 D6
–
/CLKOUTA
38 D5
+
/CLKOUTB
37 D5
–
/OFB
36 CLKOUT
+
/DB11
35 CLKOUT
–
/DB10
34 OV
DD
33 OGND
UP PACKAGE
64-LEAD (9mm
×
9mm) PLASTIC QFN
EXPOSED PAD (PIN 65) IS GND, MUST BE SOLDERED TO PCB
T
JMAX
= 150°C,
θ
JA
= 20°C/W
ORDER I FOR ATIO
LEAD FREE FINISH
LTC2241CUP-12#PBF
LTC2241IUP-12#PBF
LEAD BASED FINISH
LTC2241CUP-12
LTC2241IUP-12
TAPE AND REEL
LTC2241CUP-12#TRPBF
LTC2241IUP-12#TRPBF
TAPE AND REEL
LTC2241CUP-12#TR
LTC2241IUP-12#TR
ENC
+
17
ENC
–
18
SHDN 19
OE 20
DO
–
/DB0 21
DO
+
/DB1 22
D1
–
/DB2 23
D1
+
/DB3 24
OGND 25
OV
DD
26
D2
–
/DB4 27
D2
+
/DB5 28
D3
–
/DB6 29
D3
+
/DB7 30
D4
–
/DB8 31
D4
+
/DB9 32
Consult LTC Marketing for parts specified with wider operating temperature ranges. *Temperature grades are 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/
2
U
U
W W
U
W
W
OV
DD
= V
DD
(Notes 1, 2)
Power Dissipation ............................................ 1500mW
Operating Temperature Range
LTC2241C-12 .......................................... 0°C to 70°C
LTC2241I-12 .......................................–40°C to 85°C
Storage Temperature Range ..................–65°C to 150°C
U
U
U
TOP VIEW
PART MARKING*
LTC2241UP-12
LTC2241UP-12
PART MARKING*
LTC2241UP-12
LTC2241UP-12
PACKAGE DESCRIPTION
64-Lead (9mm
×
9mm) Plastic QFN
64-Lead (9mm
×
9mm) Plastic QFN
PACKAGE DESCRIPTION
64-Lead (9mm
×
9mm) Plastic QFN
64-Lead (9mm
×
9mm) Plastic QFN
TEMPERATURE RANGE
0°C to 70°C
–40°C to 125°C
TEMPERATURE RANGE
0°C to 70°C
–40°C to 125°C
224112fa
LTC2241-12
CO VERTER CHARACTERISTICS
The
●
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
PARAMETER
Resolution (No Missing Codes)
Integral Linearity Error
Differential Linearity Error
Offset Error
Gain Error
Offset Drift
Full-Scale Drift
Transition Noise
Internal Reference
External Reference
SENSE = 1V
Differential Analog Input (Note 5)
Differential Analog Input
(Note 6)
External Reference
CONDITIONS
●
●
●
●
●
A ALOG I PUT
SYMBOL
V
IN
V
IN, CM
I
IN
I
SENSE
I
MODE
I
LVDS
t
AP
t
JITTER
PARAMETER
The
●
denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C. (Note 4)
CONDITIONS
2.375V < V
DD
< 2.625V (Note 7)
+
–
)/2
Analog Input Range (A
IN+
– A
IN–
)
Analog Input Common Mode (A
IN
+ A
IN
Analog Input Leakage Current
SENSE Input Leakage
MODE Pin Pull-Down Current to GND
LVDS Pin Pull-Down Current to GND
Sample and Hold Acquisition Delay Time
Sample and Hold Acquisition Delay Time Jitter
Full Power Bandwidth
DY A IC ACCURACY
SYMBOL
SNR
PARAMETER
The
●
denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. A
IN
= –1dBFS. (Note 4)
CONDITIONS
10MHz Input
70MHz Input
140MHz Input
240MHz Input
SFDR
Spurious Free Dynamic Range
2nd or 3rd Harmonic
(Note 11)
10MHz Input
70MHz Input
140MHz Input
240MHz Input
Spurious Free Dynamic Range
4th Harmonic or Higher
(Note 11)
10MHz Input
70MHz Input
140MHz Input
240MHz Input
S/(N+D)
Signal-to-Noise Plus
Distortion Ratio
(Note 12)
10MHz Input
70MHz Input
140MHz Input
240MHz Input
IMD
Intermodulation Distortion
f
IN1
= 135MHz, f
IN2
= 140MHz
●
●
●
●
Signal-to-Noise Ratio (Note 10)
U
W U
U
MIN
12
–2.3
–1
–15
–3.4
TYP
±0.7
±0.4
±5
±0.7
±10
±60
±45
0.74
MAX
2.3
1
15
3.4
UNITS
Bits
LSB
LSB
mV
%FS
µV/C
ppm/C
ppm/C
LSB
RMS
U
MIN
●
●
●
●
TYP
±0.5
to
±1
1.25
MAX
1.3
1
1
UNITS
V
V
µA
µA
µA
µA
ns
fs
RMS
MHz
Differential Input (Note 7)
0 < A
IN+
, A
IN–
< V
DD
0V < SENSE < 1V
1.2
–1
–1
7
7
0.4
95
Figure 8 Test Circuit
1200
MIN
64
TYP
65.5
65.4
65.4
65.2
78
MAX
UNITS
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBc
224112fa
65
74
73
72
87
74
87
87
87
65.4
62.1
65.2
65.1
64.9
81
3
LTC2241-12
I TER AL REFERE CE CHARACTERISTICS
PARAMETER
V
CM
Output Voltage
V
CM
Output Tempco
V
CM
Line Regulation
V
CM
Output Resistance
2.375V < V
DD
< 2.625V
–1mA < I
OUT
< 1mA
CONDITIONS
I
OUT
= 0
DIGITAL I PUTS A D DIGITAL OUTPUTS
SYMBOL
V
ID
V
ICM
R
IN
C
IN
V
IH
V
IL
I
IN
C
IN
OV
DD
= 2.5V
C
OZ
I
SOURCE
I
SINK
V
OH
V
OL
OV
DD
= 1.8V
V
OH
V
OL
V
OD
V
OS
High Level Output Voltage
Low Level Output Voltage
Differential Output Voltage
Output Common Mode Voltage
I
O
= –500µA
I
O
= 500µA
Hi-Z Output Capacitance
Output Source Current
Output Sink Current
High Level Output Voltage
Low Level Output Voltage
OE = High (Note 7)
V
OUT
= 0V
V
OUT
= 2.5V
I
O
= –10µA
I
O
= –500µA
I
O
= 10µA
I
O
= 500µA
PARAMETER
Differential Input Voltage
Common Mode Input Voltage
Input Resistance
Input Capacitance
High Level Input Voltage
Low Level Input Voltage
Input Current
Input Capacitance
(Note 7)
V
DD
= 2.5V
V
DD
= 2.5V
V
IN
= 0V to V
DD
(Note 7)
CONDITIONS
(Note 7)
Internally Set
Externally Set (Note 7)
ENCODE INPUTS (ENC
+
, ENC
–
)
The
●
denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
MIN
●
●
LOGIC INPUTS (OE, SHDN)
●
●
●
LOGIC OUTPUTS (CMOS MODE)
3
37
23
2.495
2.45
0.005
0.07
1.75
0.07
●
●
LOGIC OUTPUTS (LVDS MODE)
100Ω Differential Load
100Ω Differential Load
247
1.125
350
1.250
454
1.375
mV
V
4
U
U
U
U
U
(Note 4)
MIN
1.225
TYP
1.25
±35
3
2
MAX
1.275
UNITS
V
ppm/°C
mV/V
Ω
TYP
MAX
UNITS
V
0.2
1.2
1.5
1.5
4.8
2
1.7
0.7
–10
3
10
2.0
V
V
kΩ
pF
V
V
µA
pF
pF
mA
mA
V
V
V
V
V
V
224112fa
LTC2241-12
The
●
denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C. (Note 9)
SYMBOL
V
DD
P
SLEEP
P
NAP
OV
DD
I
VDD
I
OVDD
P
DISS
OV
DD
I
VDD
P
DISS
PARAMETER
Analog Supply Voltage
Sleep Mode Power
Nap Mode Power
Output Supply Voltage
Analog Supply Current
Output Supply Current
Power Dissipation
Output Supply Voltage
Analog Supply Current
Power Dissipation
(Note 8)
(Note 7)
CONDITIONS
(Note 8)
SHDN = High, OE = High, No CLK
SHDN = High, OE = Low, No CLK
(Note 8)
●
●
●
●
●
●
●
POWER REQUIRE E TS
LVDS OUTPUT MODE
2.375
2.5
226
58
710
0.5
2.5
226
585
2.625
252
70
805
2.625
252
V
mA
mA
mW
V
mA
mW
CMOS OUTPUT MODE
The
●
denotes the specifications which apply over the full operating temperature
据外媒报道，萨里大学（University of Surrey）的研究人员开发出一种无需依赖GPS即可在人口密集的城市地区精确定位设备位置的人工智能系统。该系统可将定位误差从734米缩小到22米以内，这对于自动驾驶汽车和救援车辆等技术的发展意义重大。 图片来源： 萨里大学 在发表于《IEEE Robotics and Automation Letters》的论文中，研究人员介绍了PEn...[详细]
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