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LTC2282IUP#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
LTC2282
1
2282fb
TYPICAL APPLICATION
DESCRIPTION
Dual 12-Bit, 105Msps
Low Power 3V ADC
The LTC
®
2282 is a 12-bit 105Msps, low power dual 3V
A/D converter designed for digitizing high frequency,
wide dynamic range signals. The LTC2282 is perfect for
demanding imaging and communications applications
with AC performance that includes 70.1dB SNR and 85dB
SFDR for signals at the Nyquist frequency.
DC specs include ±0.4LSB INL (typ), ±0.2LSB DNL (typ)
and no missing codes over temperature. The transition
noise is a low 0.3LSB
RMS
.
A single 3V supply allows low power operation. A separate
output supply allows the outputs to drive 0.5V to 3.6V
logic.
A single-ended CLK input controls converter operation. An
optional clock duty cycle stabilizer allows high performance
at full speed for a wide range of clock duty cycles.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
FEATURES
APPLICATIONS
n
Integrated Dual 12-Bit ADCs
n
Sample Rate: 105Msps
n
Single 3V Supply (2.85V to 3.4V)
n
Low Power: 540mW
n
70.1dB SNR, 88dB SFDR
n
110dB Channel Isolation at 100MHz
n
Flexible Input: 1V
P-P
to 2V
P-P
Range
n
575MHz Full Power Bandwidth S/H
n
Clock Duty Cycle Stabilizer
n
Shutdown and Nap Modes
n
Pin Compatible Family
105Msps: LTC2282 (12-Bit), LTC2284 (14-Bit)
80Msps: LTC2294 (12-Bit), LTC2299 (14-Bit)
65Msps: LTC2293 (12-Bit), LTC2298 (14-Bit)
40Msps: LTC2292 (12-Bit), LTC2297 (14-Bit)
25Msps: LTC2291 (12-Bit), LTC2296 (14-Bit)
10Msps: LTC2290 (12-Bit), LTC2295 (14-Bit)
n
64-Pin (9mm × 9mm) QFN Package
n
Wireless and Wired Broadband Communication
n
Imaging Systems
n
Spectral Analysis
n
Portable Instrumentation
INPUT FREQUENCY (MHz)
0
SNR (dBFS)
72
150
2282 TA01b
69
67
50 100 200
66
65
73
71
70
68
250 300 350
–
+
INPUT
S/H
ANALOG
INPUT A
ANALOG
INPUT B
CLK A
CLK B
12-BIT
PIPELINED
ADC CORE
CLOCK/DUTY CYCLE
CONTROL
OUTPUT
DRIVERS
•
•
•
OV
DD
OGND
MUX
D11A
D0A
•
•
•
OV
DD
OGND
2282 TA01
D11B
D0B
–
+
OUTPUT
DRIVERS
INPUT
S/H
12-BIT
PIPELINED
ADC CORE
CLOCK/DUTY CYCLE
CONTROL
SNR vs Input Frequency,
–1dB, 2V Range
LTC2282
2
2282fb
PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS
OV
DD
= V
DD
(Notes 1, 2)
Supply Voltage (V
DD
) ..................................................4V
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)
Power Dissipation .............................................1500mW
Operating Temperature Range
LTC2282C ................................................ 0°C to 70°C
LTC2282I..............................................–40°C to 85°C
Storage Temperature Range ...................–65°C to 125°C
TOP VIEW
UP PACKAGE
64-LEAD (9mm s 9mm) PLASTIC QFN
T
JMAX
= 125°C, Q
JA
= 20°C/W
EXPOSED PAD (PIN 65) IS GND AND MUST BE SOLDERED TO PCB
A
INA
+
1
A
INA
–
2
REFHA 3
REFHA 4
REFLA 5
REFLA 6
V
DD
7
CLKA 8
CLKB 9
V
DD
10
REFLB 11
REFLB 12
REFHB 13
REFHB 14
A
INB
–
15
A
INB
+
16
48 DA5
47 DA4
46 DA3
45 DA2
44 DA1
43 DA0
42 NC
41 NC
40 OFB
39 DB11
38 DB10
37 DB9
36 DB8
35 DB7
34 DB6
33 DB5
64 GND
63 V
DD
62 SENSEA
61 VCMA
60 MODE
59 SHDNA
58 OEA
57 OFA
56 DA11
55 DA10
54 DA9
53 DA8
52 DA7
51 DA6
50 OGND
49 OV
DD
GND 17
V
DD
18
SENSEB 19
VCMB 20
MUX 21
SHDNB 22
OEB 23
NC 24
NC 25
DB0 26
DB1 27
DB2 28
DB3 29
DB4 30
OGND 31
OV
DD
32
65
CONVERTER CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution (No Missing Codes)
l
12 Bits
Integral Linearity Error Differential Analog Input (Note 5)
l
–1.5 ±0.4 1.5 LSB
Differential Linearity Error Differential Analog Input
l
–0.9 ±0.2 0.9 LSB
Offset Error (Note 6)
l
–12 ±2 12 mV
Gain Error External Reference
l
–2.5 ±0.5 2.5 %FS
Offset Drift ±10 μV/°C
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. (Note 4)
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2282IUP#PBF LTC2282IUP#TRPBF LTC2282UP
64-Lead (9mm × 9mm) Plastic QFN
–40°C to 85°C
LTC2282CUP#PBF LTC2282CUP#TRPBF LTC2282UP
64-Lead (9mm × 9mm) Plastic QFN
0°C to 70°C
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2282IUP LTC2282IUP#TR LTC2282UP
64-Lead (9mm × 9mm) Plastic QFN
–40°C to 85°C
LTC2282CUP LTC2282CUP#TR LTC2282UP
64-Lead (9mm × 9mm) Plastic QFN
0°C to 70°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *Temperature grades are identifi ed 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 specifi cations, go to: http://www.linear.com/tapeandreel/
ORDER INFORMATION
LTC2282
3
2282fb
ANALOG INPUT
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Analog Input Range (A
IN
+
– A
IN
–
) 2.85V < V
DD
< 3.4V (Note 7)
l
±0.5V to ±1V V
V
IN,CM
Analog Input Common Mode (A
IN
+
+ A
IN
–
)/2 Differential Input Drive (Note 7)
Single Ended Input Drive (Note 7)
l
l
1
0.5
1.5
1.5
1.9
2
V
V
I
IN
Analog Input Leakage Current 0V < A
IN
+
, A
IN
–
< V
DD
l
–1 1 μA
I
SENSE
SENSEA, SENSEB Input Leakage 0V < SENSEA, SENSEB < 1V
l
–3 3 μA
I
MODE
MODE Input Leakage Current 0V < MODE < V
DD
l
–3 3 μA
t
AP
Sample-and-Hold Acquisition Delay Time 0 ns
t
JITTER
Sample-and-Hold Acquisition Delay Time Jitter 0.2 ps
RMS
CMRR Analog Input Common Mode Rejection Ratio 80 dB
Full Power Bandwidth Figure 8 Test Circuit 575 MHz
The l denotes the specifi cations which apply over the full operating temperature range, otherwise
specifi cations are at T
A
= 25°C. (Note 4)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SNR Signal-to-Noise Ratio 5MHz Input 70.1 dB
30MHz Input 70.1 dB
70MHz Input
l
68.5 70 dB
140MHz Input 69.7 dB
SFDR Spurious Free Dynamic Range
2nd or 3rd Harmonic
5MHz Input 88 dB
30MHz Input 86 dB
70MHz Input
l
72 84 dB
140MHz Input 79 dB
SFDR Spurious Free Dynamic Range
4th Harmonic or Higher
5MHz Input 90 dB
30MHz Input 90 dB
70MHz Input
l
79 90 dB
140MHz Input 90 dB
S/(N+D) Signal-to-Noise Plus Distortion Ratio 5MHz Input 70 dB
30MHz Input 70 dB
70MHz Input
l
67.5 69.9 dB
140MHz Input 68.7 dB
I
MD
Intermodulation Distortion f
IN
= 40MHz, 41MHz 85 dB
Crosstalk f
IN
= 100MHz –110 dB
DYNAMIC ACCURACY
The l denotes the specifi cations which apply over the full operating temperature range,
otherwise specifi cations are at T
A
= 25°C. A
IN
= –1dBFS. (Note 4)
CONVERTER CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. (Note 4)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Full-Scale Drift Internal Reference ±30 ppm/°C
External Reference ±5 ppm/°C
Gain Matching External Reference ±0.3 %FS
Offset Matching ±2 mV
Transition Noise SENSE = 1V 0.3 LSB
RMS
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

LTC2282IUP#PBF

Mfr. #:
Buy LTC2282IUP#PBF
Manufacturer:
Analog Devices Inc.
Description:
Analog to Digital Converters - ADC 2x 12-B, 105Msps L Pwr 3V ADC
Lifecycle:
New from this manufacturer.
Delivery:
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