simultaneous sampling 14-bit A/D converters designed
for digitizing high frequency, wide dynamic range signals.
They are perfect for demanding communications applica-
tions with AC performance that includes 73.7dB SNR and
90dB spurious free dynamic range (SFDR). Ultralow jitter
of 0.15ps
RMS
allows undersampling of IF frequencies with
excellent noise performance.
DC specs include ±1LSB INL (typ), ±0.3LSB DNL (typ)
and no missing codes over temperature. The transition
noise is a low 1.2LSB
RMS
.
The digital outputs are serial LVDS to minimize the num-
ber of data lines. Each channel outputs two bits at a time
(2-lane mode) or one bit at a time (1-lane mode). The LVDS
drivers have optional internal termination and adjustable
output levels to ensure clean signal integrity.
The ENC
+
and ENC
–
inputs may be driven differentially
or single-ended with a sine wave, PECL, LVDS, TTL, or
CMOS inputs. An internal clock duty cycle stabilizer
allows high performance at full speed for a wide range of
clock duty cycles.
2-Channel Simultaneous Sampling ADC
73.7dB SNR
90dB SFDR
Low Power: 171mW/113mW/94mW Total
85mW/56mW/47mW per Channel
Single 1.8V Supply
Serial LVDS Outputs: 1 or 2 Bits per Channel
Selectable Input Ranges: 1V
P-P
to 2V
P-P
800MHz Full Power Bandwidth S/H
Shutdown and Nap Modes
Serial SPI Port for Configuration
Pin Compatible 14-Bit and 12-Bit Versions
40-Pin (6mm
×
6mm) QFN Package
APPLICATIONS
n
n
n
n
n
n
Communications
Cellular Base Stations
Software Defined Radios
Portable Medical Imaging
Multichannel Data Acquisition
Nondestructive Testing
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
1.8V
V
DD
CH.1
ANALOG
INPUT
CH.2
ANALOG
INPUT
ENCODE
INPUT
1.8V
OV
DD
OUT1A
OUT1B
AMPLITUDE (dBFS)
DATA
SERIALIZER
OUT2A
OUT2B
DATA
CLOCK
OUT
FRAME
GND
OGND
226514 TA01
LTC2265-14, 65Msps,
2-Tone FFT, f
IN
= 70MHz and 75MHz
0
–10
–20
–30
SERIALIZED
LVDS
OUTPUTS
–40
–50
–60
–70
–80
+
S/H
–
+
S/H
–
14-BIT
ADC CORE
14-BIT
ADC CORE
PLL
–90
–100
–110
–120
0
20
10
FREQUENCY (MHz)
30
226514
TA02
22654314fb
1
LTC2265-14/
LTC2264-14/LTC2263-14
ABSOLUTE MAXIMUM RATINGS
(Notes 1 and 2)
PIN CONFIGURATION
TOP VIEW
PAR/SER
OUT1A
+
OUT2B
–
OUT1A
–
30 OUT1B
+
29 OUT1B
–
28 DCO
+
27 DCO
–
41
GND
26 OV
DD
25 OGND
24 FR
+
23 FR
–
22 OUT2A
+
21 OUT2A
–
11 12 13 14 15 16 17 18 19 20
V
DD
V
DD
ENC
+
ENC
–
CS
SCK
OUT2B
+
SDI
GND
SENSE
V
REF
GND
GND
SDO
V
DD
A
IN1+
1
A
IN1–
2
V
CM1
3
REFH 4
REFH 5
REFL 6
REFL 7
V
CM2
8
A
IN2+
9
A
IN2–
10
V
DD
Supply Voltages
V
DD
, OV
DD
................................................ –0.3V to 2V
Analog Input Voltage (A
IN +
, A
IN –
, PAR/SER, SENSE)
(Note 3)........................................ –0.3V to (V
DD
+ 0.2V)
Digital Input Voltage (ENC
+
, ENC
–
,
CS,
SDI, SCK)
(Note 4)..................................................... –0.3V to 3.9V
SDO (Note 4) ............................................ –0.3V to 3.9V
Digital Output Voltage ................ –0.3V to (OV
DD
+ 0.3V)
Operating Temperature Range
LTC2265C, 2264C, 2263C ........................ 0°C to 70°C
LTC2265I, 2264I, 2263I .......................–40°C to 85°C
Storage Temperature Range...................–65°C to 150°C
40 39 38 37 36 35 34 33 32 31
UJ PACKAGE
40-LEAD (6mm
×
6mm) PLASTIC QFN
T
JMAX
= 150°C,
θ
JA
= 32°C/W
EXPOSED PAD (PIN 41) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LTC2265CUJ-14#PBF
LTC2265IUJ-14#PBF
LTC2264CUJ-14#PBF
LTC2264IUJ-14#PBF
LTC2263CUJ-14#PBF
LTC2263IUJ-14#PBF
TAPE AND REEL
LTC2265CUJ-14#TRPBF
LTC2265IUJ-14#TRPBF
LTC2264CUJ-14#TRPBF
LTC2264IUJ-14#TRPBF
LTC2263CUJ-14#TRPBF
LTC2263IUJ-14#TRPBF
PART MARKING*
LTC2265UJ-14
LTC2265UJ-14
LTC2264UJ-14
LTC2264UJ-14
LTC2263UJ-14
LTC2263UJ-14
PACKAGE DESCRIPTION
40-Lead (6mm
×
6mm) Plastic QFN
40-Lead (6mm
×
6mm) Plastic QFN
40-Lead (6mm
×
6mm) Plastic QFN
40-Lead (6mm
×
6mm) Plastic QFN
40-Lead (6mm
×
6mm) Plastic QFN
40-Lead (6mm
×
6mm) Plastic QFN
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
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is 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/
22654314fb
2
LTC2265-14/
LTC2264-14/LTC2263-14
CONVERTER CHARACTERISTICS
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 5)
CONDITIONS
l
LTC2265-14
PARAMETER
Resolution (No Missing Codes)
Integral Linearity Error
Differential Linearity Error
Offset Error
Gain Error
Offset Drift
Full-Scale Drift
Gain Matching
Offset Matching
Transition Noise
External Reference
Internal Reference
External Reference
External Reference
Differential Analog Input
(Note 7)
Internal Reference
External Reference
MIN
14
–3
–0.8
–12
–2.1
±1
±0.3
±3
–0.8
–0.8
±20
±30
±10
±0.2
±3
1.2
3
0.8
12
0.5
TYP
MAX
MIN
14
–3
–0.8
–12
–2.1
LTC2264-14
TYP
±1
±0.3
±3
–0.8
–0.8
±20
±30
±10
±0.2
±3
1.2
MAX
3
0.8
12
0.5
14
–3
LTC2263-14
MIN
TYP
±1
±0.3
±3
–0.8
–0.8
±20
±30
±10
±0.2
±3
1.2
MAX
3
0.8
12
0.5
UNITS
Bits
LSB
LSB
mV
%FS
%FS
µV/°C
ppm/°C
ppm/°C
%FS
mV
LSB
RMS
Differential Analog Input (Note 6)
l
l
l
l
–0.8
–12
–2.1
ANALOG INPUT
SYMBOL PARAMETER
V
IN
V
IN(CM)
V
SENSE
I
INCM
I
IN1
I
IN2
I
IN3
t
AP
t
JITTER
CMRR
BW-3B
The
l
denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C. (Note 5)
CONDITIONS
1.7V < V
DD
< 1.9V
Differential Analog Input (Note 8)
External Reference Mode
Per Pin, 65Msps
Per Pin, 40Msps
Per Pin, 25Msps
0 < A
IN +
, A
IN –
< V
DD
0 < PAR/SER < V
DD
0.625 < SENSE < 1.3V
l
l
l
l
l
V
CM
– 100mV
l
MIN
TYP
1 to 2
V
CM
1.250
81
50
31
MAX
V
CM
+ 100mV
1.300
UNITS
V
P-P
V
V
µA
µA
µA
Analog Input Range (A
IN +
– A
IN –
)
Analog Input Common Mode (A
IN +
+ A
IN –
)/2
External Voltage Reference Applied to SENSE
Analog Input Common Mode Current
0.625
Analog Input Leakage Current (No Encode)
PAR/SER Input Leakage Current
SENSE Input Leakage Current
Sample-and-Hold Acquisition Delay Time
Sample-and-Hold Acquisition Delay Jitter
Analog Input Common Mode Rejection Ratio
Full-Power Bandwidth
–1
–3
–6
0
0.15
80
1
3
6
µA
µA
µA
ns
ps
RMS
dB
MHz
Figure 6 Test Circuit
800
22654314fb
3
LTC2265-14/
LTC2264-14/LTC2263-14
DYNAMIC ACCURACY
SYMBOL
SNR
PARAMETER
Signal-to-Noise Ratio
The
l
denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. A
IN
= –1dBFS. (Note 5)
LTC2265-14
CONDITIONS
5MHz Input
30MHz Input
70MHz Input
140MHz Input
l
LTC2264-14
MIN
72
TYP
73.5
73.4
73.4
72.8
90
90
89
84
90
90
90
90
73.3
73.2
73.1
72.3
–105
MAX
LTC2263-14
MIN
71.4
TYP
72.9
72.9
72.8
72.3
90
90
89
84
90
90
90
90
72.8
72.7
72.5
71.9
–105
MAX
UNITS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBc
MIN
72.3
TYP
73.7
73.7
73.5
73
90
90
89
84
90
90
90
90
73.6
73.5
73.2
72.5
–105
MAX
SFDR
Spurious Free Dynamic Range 5MHz Input
2
nd
or 3
rd
Harmonic
30MHz Input
70MHz Input
140MHz Input
Spurious Free Dynamic Range 5MHz Input
4
th
Harmonic or Higher
30MHz Input
70MHz Input
140MHz Input
l
78
79
79
l
85
85
85
S/(N+D)
Signal-to-Noise Plus
Distortion Ratio
5MHz Input
30MHz Input
70MHz Input
140MHz Input
10MHz Input
l
71.5
71.6
70.9
Crosstalk
The
l
denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at T
A
= 25°C. A
IN
= –1dBFS. (Note 5)
PARAMETER
V
CM
Output Voltage
V
CM
Output Temperature Drift
V
CM
Output Resistance
V
REF
Output Voltage
V
REF
Output Temperature Drift
V
REF
Output Resistance
V
REF
Line Regulation
–400µA < I
OUT
< 1mA
1.7V < V
DD
< 1.9V
–600µA < I
OUT
< 1mA
I
OUT
= 0
1.225
CONDITIONS
I
OUT
= 0
MIN
0.5 • V
DD
– 25mV
TYP
0.5 • V
DD
±25
4
1.250
±25
7
0.6
1.275
MAX
0.5 • V
DD
+ 25mV
UNITS
V
ppm/°C
Ω
V
ppm/°C
Ω
mV/V
INTERNAL REFERENCE CHARACTERISTICS
DIGITAL INPUTS AND OUTPUTS
SYMBOL PARAMETER
ENCODE INPUTS (ENC
+
, ENC
–
)
Differential Encode Mode (ENC
–
Not Tied to GND)
V
ID
V
ICM
V
IN
R
IN
C
IN
Differential Input Voltage
Common Mode Input Voltage
Input Voltage Range
Input Resistance
Input Capacitance
(Note 8)
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 5)
CONDITIONS
MIN
TYP
MAX
UNITS
l
l
l
0.2
1.1
0.2
10
3.5
1.2
1.6
3.6
V
V
V
V
kΩ
pF
Internally Set
Externally Set (Note 8)
ENC
+
, ENC
–
to GND
(See Figure 10)
22654314fb
4
LTC2265-14/
LTC2264-14/LTC2263-14
DIGITAL INPUTS AND OUTPUTS
SYMBOL PARAMETER
Single-Ended Encode Mode (ENC
–
Tied to GND)
V
IH
V
IL
V
IN
R
IN
C
IN
V
IH
V
IL
I
IN
C
IN
R
OL
I
OH
C
OUT
V
OD
V
OS
R
TERM
High Level Input Voltage
Low Level Input Voltage
Input Voltage Range
Input Resistance
Input Capacitance
High Level Input Voltage
Low Level Input Voltage
Input Current
Input Capacitance
Logic Low Output Resistance to GND
Logic High Output Leakage Current
Output Capacitance
Differential Output Voltage
Common Mode Output Voltage
On-Chip Termination Resistance
100Ω Differential Load, 3.5mA Mode
100Ω Differential Load, 1.75mA Mode
100Ω Differential Load, 3.5mA Mode
100Ω Differential Load, 1.75mA Mode
Termination Enabled, OV
DD
= 1.8V
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 5)
CONDITIONS
V
DD
= 1.8V
V
DD
= 1.8V
ENC
+
to GND
(See Figure 11)
l
l
l
MIN
1.2
TYP
MAX
UNITS
V
0.6
0
30
3.5
3.6
V
V
kΩ
pF
V
DIGITAL INPUTS (CS, SDI, SCK in Serial or Parallel Programming Mode. SDO in Parallel Programming Mode)
V
DD
= 1.8V
V
DD
= 1.8V
V
IN
= 0V to 3.6V
l
l
l
1.3
0.6
–10
3
10
V
µA
pF
Ω
SDO OUTPUT (Serial Programming Mode. Open-Drain Output. Requires 2kΩ Pull-Up Resistor if SDO Is Used)
V
DD
= 1.8V, SDO = 0V
SDO = 0V to 3.6V
l
200
–10
3
247
125
1.125
1.125
350
175
1.250
1.250
100
454
250
1.375
1.375
10
µA
pF
mV
mV
V
V
Ω
DIGITAL DATA OUTPUTS
The
l
denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C. (Note 9)
LTC2265-14
SYMBOL PARAMETER
V
DD
OV
DD
I
VDD
I
OVDD
CONDITIONS
l
l
l
POWER REQUIREMENTS
Analog Supply Voltage (Note 10)
Output Supply Voltage (Note 10)
Analog Supply Current Sine Wave Input
Digital Supply Current
LTC2264-14
MIN
1.7
1.7
TYP
1.8
1.8
53
10
19
15
28
113
130
122
146
1
60
20
MAX
1.9
1.9
63
1.9
1.9
98
1.7
1.7
LTC2263-14
MIN
TYP
1.8
1.8
42
10
18
14
27
94
108
101
124
1
60
20
MAX
1.9
1.9
50
UNITS
V
V
mA
mA
mA
mA
mA
mW
mW
mW
mW
mW
mW
mW
MIN
1.7
1.7
TYP
1.8
1.8
84
11
20
15
28
171
187
178
202
1
60
20
MAX
1-Lane Mode, 1.75mA Mode
1-Lane Mode, 3.5mA Mode
2-Lane Mode, 1.75mA Mode
2-Lane Mode, 3.5mA Mode
1-Lane Mode, 1.75mA Mode
1-Lane Mode, 3.5mA Mode
2-Lane Mode, 1.75mA Mode
2-Lane Mode, 3.5mA Mode
l
l
18
32
17
31
17
31
P
DISS
Power Dissipation
l
l
209
234
144
169
121
146
P
SLEEP
P
NAP
P
DIFFCLK
Sleep Mode Power
Nap Mode Power
Power Increase with Differential Encode Mode Enabled
Hello everyone! The portable ultrasonic atomizer currently developed by our company has encountered a bottleneck in circuit control. The 3MHz piezoelectric ceramic atomizer is currently used. The curr...
As the title says, in a boost circuit, the input voltage fluctuates between 12-18V, the output voltage is 24V, the output current is 2A, and the switching frequency is 50kHz. How should the RC buffer ...
Hello Expert,
I looked at the schematic of the DC2222A (LTC2500 evaluation board) and found that all digital signal transmission lines (such as between the FPGA and the ADC) have a 33Ω series resistor...
As shown in the figure, the test voltage is marked on the figureThe voltage on the left side of 330K becomes lower when it reaches the op amp's non-inverting input, but the voltage at the feedback-reg...
If we want to connect the world, one protocol is not enough?
Connecting buildings, factories and power grids? Multi-protocol and multi-band is the only way
Thread, Zigbee, Bluetooth 5.0 and Sub-1 GHz,...
Serial peripheral interface SPI (serial peripheral interface) bus technology is a synchronous serial interface introduced by Motorola. It allows the CPU to communicate with peripheral interface d...[Details]
On January 20, TechWeb quoted foreign media reports that the multi-billion dollar camera module order thrown out by electric car manufacturer Tesla has attracted the interest of many companies, which...[Details]
Introduction: South Korea has a land area of only 100,000 square kilometers. What does this mean? Shandong Province has an area of 150,000 square kilometers. South Korea is only two-thirds the si...[Details]
1. First, you need to make sure your oscilloscope is working properly. Use a passive probe, preferably the one that comes with the oscilloscope, and connect it to the probe compensation terminal on t...[Details]
The circuit diagram is as follows: The microcontroller source program is as follows: #include reg51.h #include intrins.h unsigned int times; unsigned int controlway; unsigned int flag = 0; u...[Details]
The main purpose of this car battery heater circuit is to ensure that the battery can be charged and discharged satisfactorily even at extremely low temperatures.
Circuit Description
...[Details]
Fault phenomenon Current 1A range, output is uncontrolled. Testing process Upon inspection, it was found that multiple components of the instrument control board were damaged and had poor performance...[Details]
In view of the requirements of variable frequency amplitude modulation of modern power supply, it is proposed to use PIC16F873 to generate SPWM wave to control IR2136 to trigger IGBT to generate PW...[Details]
Android tablets have always had shortcomings. For example, the lack of targeted optimization of the system leads to a poor experience, which results in a large gap in the user experience of Android t...[Details]
1 Introduction
At present, embedded processors based on ARM core have become the mainstream in the embedded system market. With the widespread application of ARM technology, the establishment ...[Details]
NuVolta Technologies (hereinafter referred to as NuVolta) today announced the launch of the first high-power wireless charging reference design for the automotive market - NVTREF8040Q. Based on NuVol...[Details]
Recently, Xiaodu, as an important part of Baidu's "AI Life" layout, CEO Li Ying brought the new Xiaodu Tiantian home
robot
to the 2023 Baidu World Conference, showing that in the era of ...[Details]
In the magical first half of this year, the automotive industry was like a world of ice and fire. The more desolate the traditional fuel vehicle companies were, the more delighted the new energy vehi...[Details]
51 microcontroller 51 microcontroller is the collective name for all microcontrollers compatible with the Intel 8031 instruction system. The ancestor of this series of microcontrollers is Intel...[Details]
0 Introduction
When developing embedded systems, the binary code of the target platform is usually generated on the host machine through cross-compilation, and then written into the target machine f...[Details]