EXPOSED PAD (PIN 49) IS GND, MUST BE SOLDERED TO PCB
orDer inFormaTion
LEAD FREE FINISH
LTC2389CUK-18#PBF
LTC2389IUK-18#PBF
LEAD FREE FINISH
LTC2389CLX-18#PBF
LTC2389ILX-18#PBF
LTC2389HLX-18#PBF
TAPE AND REEL
LTC2389CUK-18#TRPBF
LTC2389IUK-18#TRPBF
TRAY
LTC2389CLX-18#PBF
LTC2389ILX-18#PBF
LTC2389HLX-18#PBF
PART MARKING*
LTC2389UK-18
LTC2389UK-18
PART MARKING*
LTC2389LX-18
LTC2389LX-18
LTC2389LX-18
PACKAGE DESCRIPTION
48-Lead 7mm
×
7mm Plastic QFN
48-Lead 7mm
×
7mm Plastic QFN
PACKAGE DESCRIPTION
48-Lead 7mm
×
7mm Plastic LQFP
48-Lead 7mm
×
7mm Plastic LQFP
48-Lead 7mm
×
7mm Plastic LQFP
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
–40°C to 125°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/
238918f
2
D6 13
D7 14
D8 15
D9 16
GND 17
OV
DD
18
V
DD
19
GND 20
D10 21
D11/SDI 22
D12/SDO 23
D13/SCK 24
UK PACKAGE
48-LEAD (7mm
×
7mm) PLASTIC QFN
LTC2389-18
analog inpuT
The
l
denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C. (Note 4)
PARAMETER
Absolute Input Range (IN
+
)
Absolute Input Range (IN
–
)
SYMBOL
V
IN+
V
IN–
V
IN+
– V
IN–
V
CM
I
IN
C
IN
CMRR
V
IHCNVST
V
ILCNVST
I
INCNVST
CONDITIONS
(Note 5)
Fully Differential (Note 5)
Pseudo-Differential Unipolar (Note 5)
Pseudo-Differential Bipolar (Note 5)
Fully Differential
Pseudo-Differential Unipolar
Pseudo-Differential Bipolar
Fully Differential
C- and I-Grades
H-Grade
Sample Mode
Hold Mode
l
l
l
l
l
l
l
l
l
l
l
l
MIN
–0.1
–0.1
–0.1
V
REF
/2 – 0.1
–V
REF
0
–V
REF
/2
V
REF
/2 – 0.1
–1
–2
TYP
MAX
V
REF
+ 0.1
V
REF
+ 0.1
0.1
V
REF
/2 + 0.1
V
REF
V
REF
V
REF
/2
UNITS
V
V
V
V
V
V
V
V
µA
µA
pF
pF
dB
V
V
REF
/2
0
Input Differential Voltage Range
Input Common Mode Voltage Range
Analog Input Leakage Current
Analog Input Capacitance
Input Common Mode Rejection Ratio
CNVST
High Level Input Voltage
CNVST
Low Level Input Voltage
CNVST
Input Current
V
REF
/2
V
REF
/2 + 0.1
1
2
45
5
70
1.5
0.5
–25
–60
V
µA
V
IN
= 0V to V
DD
l
converTer characTerisTics
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
SYMBOL
PARAMETER
Resolution
No Missing Codes
Transition Noise
Fully Differential
Pseudo-Differential Unipolar
Pseudo-Differential Bipolar
Fully Differential (Note 6)
Pseudo-Differential Unipolar (Note 6)
Pseudo-Differential Bipolar (Note 6)
Fully Differential
Pseudo-Differential Unipolar
Pseudo-Differential Bipolar
Fully Differential (Note 7)
Pseudo-Differential Unipolar (Note 7)
Pseudo-Differential Bipolar (Note 7)
External Reference (Note 7)
Internal Reference (Note 7)
l
l
l
l
l
l
l
l
l
CONDITIONS
l
l
MIN
18
18
TYP
MAX
UNITS
Bits
Bits
0.76
1.5
1.5
–3
–3
–3
–0.9
–0.9
–0.9
–10
–15
–15
±1.25
±1.25
±1.25
±0.3
±0.3
±0.3
0
0
0
±0.05
l
LSB
RMS
LSB
RMS
LSB
RMS
3
3
3
0.9
0.9
0.9
10
15
15
0.15
0.15
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
ppm/°C
%
%
ppm/°C
INL
Integral Linearity Error
DNL
Differential Linearity Error
ZSE
Zero-Scale Error
Zero-Scale Error Drift
FSE
Full-Scale Error
Full-Scale Error Drift
±5
238918f
3
LTC2389-18
Dynamic accuracy
The
l
denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. A
IN
= –1dBFS (Notes 4, 8)
SYMBOL
SINAD
PARAMETER
Signal-to-(Noise +
Distortion) Ratio
CONDITIONS
Fully Differential, f
IN
= 2kHz
Pseudo-Differential Unipolar, f
IN
= 2kHz
Pseudo-Differential Bipolar, f
IN
= 2kHz
Fully Differential, f
IN
= 2kHz (H-Grade)
Pseudo-Differential Unipolar, f
IN
= 2kHz (H-Grade)
Pseudo-Differential Bipolar, f
IN
= 2kHz (H-Grade)
SNR
Signal-to-Noise Ratio
Fully Differential, f
IN
= 2kHz
Pseudo-Differential Unipolar, f
IN
= 2kHz
Pseudo-Differential Bipolar, f
IN
= 2kHz
Fully Differential, f
IN
= 2kHz (H-Grade)
Pseudo-Differential Unipolar, f
IN
= 2kHz (H-Grade)
Pseudo-Differential Bipolar, f
IN
= 2kHz (H-Grade)
THD
Total Harmonic
Distortion
Fully Differential, f
IN
= 2kHz, First 5 Harmonics
Pseudo-Differential Unipolar, f
IN
= 2kHz, First 5 Harmonics
Pseudo-Differential Bipolar, f
IN
= 2kHz, First 5 Harmonics
Fully Differential, f
IN
= 2kHz, First 5 Harmonics (H-Grade)
Pseudo-Differential Unipolar, f
IN
= 2kHz, First 5 Harmonics (H-Grade)
Pseudo-Differential Bipolar, f
IN
= 2kHz, First 5 Harmonics (H-Grade)
SFDR
Spurious-Free
Dynamic Range
Fully Differential, f
IN
= 2kHz
Pseudo-Differential Unipolar, f
IN
= 2kHz
Pseudo-Differential Bipolar, f
IN
= 2kHz
Fully Differential, f
IN
= 2kHz (H-Grade)
Pseudo-Differential Unipolar, f
IN
= 2kHz (H-Grade)
Pseudo-Differential Bipolar, f
IN
= 2kHz (H-Grade)
–3dB Input Bandwidth
Aperture Delay
Aperture Jitter
Transient Response
Full-Scale Step
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
MIN
97.3
92.2
92.7
96.6
92.0
92.5
98.1
92.7
93.3
97.7
92.5
93.1
TYP
99.7
94.5
95.1
99.7
94.5
95.1
99.8
94.6
95.2
99.8
94.6
95.2
–116
–112
–111
–116
–112
–111
MAX
UNITS
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
–105
–102
–102
–103
–102
–102
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
MHz
ns
ps
RMS
ns
106
102
102
104
102
102
117
113
112
117
113
112
50
0.5
1
70
reFerence characTerisTics
SYMBOL
V
REFOUT
PARAMETER
Internal Reference Voltage
V
REFOUT
Tempco
REFOUT Output Impedance
REFOUT Line Regulation
V
REF
Converter REFIN Voltage
REFIN Input Impedance
VCM Output Voltage
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
CONDITIONS
REFOUT Tied to REFIN, I
OUT
= 0µA
I
OUT
= 0µA (Note 9)
–0.1mA ≤ I
OUT
≤ 0.1mA
V
DD
= 4.75V to 5.25V
4.076
I
OUT
= 0µA
l
MIN
4.076
TYP
4.096
±10
2.3
0.3
4.096
74
2.08
MAX
4.116
±20
UNITS
V
ppm/°C
kΩ
mV/V
4.116
V
kΩ
V
238918f
4
LTC2389-18
DigiTal inpuTs anD DigiTal ouTpuTs
The
l
denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
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
Output Source Current
Output Sink Current
I
OUT
= –500µA
I
OUT
= 500µA
V
OUT
= 0V to OV
DD
V
OUT
= 0V
V
OUT
= OV
DD
l
l
l
SYMBOL
V
IH
V
IL
I
IN
C
IN
V
OH
V
OL
I
OZ
I
SOURCE
I
SINK
CONDITIONS
l
l
MIN
0.8 • OV
DD
TYP
MAX
0.2 • OV
DD
UNITS
V
V
µA
pF
V
V
IN
= 0V to OV
DD
l
–10
5
OV
DD
– 0.2
10
0.2
–10
–10
10
10
V
µA
mA
mA
power requiremenTs
The
l
denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C. (Note 4)
PARAMETER
Supply Voltage
Supply Voltage
Core Supply Current
I/O Supply Current
Power Down Current
(I
VDD
+ I
OVDD
)
Power Dissipation
2.5Msps Sample Rate
2.5Msps Sample Rate, Internal Reference Enabled
2.5Msps Sample Rate (C
L
= 15pF)
Conversion Done, P
D
= OV
DD
, Other Digital Inputs
Tied to OV
DD
or GND
2.5Msps Sample Rate
Conversion Done, P
D
= OV
DD
, Other Digital Inputs
Tied to OV
DD
or GND
l
SYMBOL
V
DD
OV
DD
I
VDD
I
OVDD
I
PD
P
D
CONDITIONS
l
l
l
MIN
4.75
1.71
TYP
5
32.5
34.1
1.6
15
162.5
75
MAX
5.25
5.25
36
UNITS
V
V
mA
mA
mA
µA
mW
µW
250
180
1250
Timing characTerisTics
SYMBOL
f
SMPL
t
CONV
t
ACQ
t
CYC
t
CNVSTL
t
CNVSTH
t
BUSYLH
t
RESETH
t
SCK
t
SCKH
t
SCKL
t
DSCK
t
SSDI
PARAMETER
Sampling Frequency
Conversion Time
Acquisition Time
Time Between
CNVST↓
CNVST
Low Time
CNVST
High Time
CNVST↓
to BUSY Delay
RESET Pulse Width
SCK Period
SCK High Time
SCK Low Time
SCK↓ Delay From
CS↓
SDI Setup Time From SCK↓
The
l
denotes the specifications which apply over the full operating temperature
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FPGA/CPLD
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