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LTC1609ISW#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
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LTC1609
1609fa
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LTC1609
28
27
26
25
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16
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R1
IN
AGND1
R2
IN
R3
IN
NC
CAP
REF
NC
AGND2
NC
NC
SB/BTC
EXT/INT
DGND
V
DIG
V
ANA
PWRD
BUSY
CS
NC
NC
R/C
NC
TAG
NC
DATA
DATACLK
SYNC
+
33.2k
0.1µF
100Ω
ANALOG INPUT
–10V TO 10V
2.2µF
+
2.2µF
+
10µF
SERIAL INTERFACE
1609 TA01
5V
200Ω
2.5V
2.5V
The LTC
®
1609 is a 200ksps, serial sampling 16-bit A/D
converter that draws only 65mW (typical) from a single 5V
supply. This easy-to-use device includes a sample-and-
hold, a precision reference, a switched capacitor succes-
sive approximation A/D and trimmed internal clock.
The input range is specified for bipolar inputs of ±10V,
±5V and ±3.3V and unipolar inputs of 0V to 10V, 0V to 5V
and 0V to 4V. Maximum DC specs include ±2LSB INL and
16-bit no missing codes over temperature. It has a typical
signal-to-noise ratio of 87dB.
The ADC has a high speed serial interface. The serial
output data can be clocked out using either the internal
serial shift clock or be clocked out by an external shift
clock. A separate convert start input (R/C) and a data ready
signal (BUSY) ease connections to FIFOs, DSPs and
microprocessors.
16-Bit, 200ksps, Serial ADC
with Multiple Input Ranges
■
Sample Rate: 200ksps
■
Input Ranges
Unipolar: 0V to 10V, 0V to 5V and 0V to 4V
Bipolar: ±10V, ±5V and ±3.3V
■
Guaranteed No Missing Codes
■
Serial I/O
■
Single 5V Supply
■
Power Dissipation: 65mW Typ
■
Power Down Mode: 50µW
■
SNR: 87dB Typ
■
Operates with Internal or External Reference
■
28-Pin SSOP and 20-Pin SO Packages
■
Improved 2nd Source to ADS7809 and AD977A
■
Industrial Process Control
■
Multiplexed Data Acquisition Systems
■
High Speed Data Acquisition for PCs
■
Digital Signal Processing
200kHz, 16-Bit Serial Sampling ADC Configured for ±10V Inputs
, LTC and LT are registered trademarks of Linear Technology Corporation.
DESCRIPTIO
U
FEATURES
APPLICATIO S
U
TYPICAL APPLICATIO
U
FREQUENCY (kHz)
0
–60
–40
0
75
1609 G06
–80
–100
25 50 100
–120
–130
–20
MAGNITUDE (dB)
f
SAMPLE
= 200kHz
f
IN
= 1kHz
SINAD = 87.2dB
THD = –100.1dB
Nonaveraged 4096 Point FFT Plot
2
LTC1609
1609fa
(Notes 1, 2)
V
ANA
.......................................................................... 7V
V
DIG
to V
ANA
........................................................... 0.3V
V
DIG
........................................................................... 7V
Ground Voltage Difference
DGND, AGND1 and AGND2 .............................. ±0.3V
Analog Inputs (Note 3)
R1
IN
, R2
IN
, R3
IN
................................................ ±25V
CAP ............................V
ANA
+ 0.3V to AGND2 – 0.3V
REF....................................Indefinite Short to AGND2
Momentary Short to V
ANA
ABSOLUTE MAXIMUM RATINGS
W
WW
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PACKAGE/ORDER INFORMATION
W
U
U
ORDER PART
NUMBER
LTC1609CG
LTC1609IG
T
JMAX
= 125°C, θ
JA
= 95°C/W
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7
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TOP VIEW
G PACKAGE
28-LEAD PLASTIC SSOP
28
27
26
25
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23
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20
19
18
17
16
15
R1
IN
AGND1
R2
IN
R3
IN
NC
CAP
REF
NC
AGND2
NC
NC
SB/BTC
EXT/INT
DGND
V
DIG
V
ANA
PWRD
BUSY
CS
NC
NC
R/C
NC
TAG
NC
DATA
DATACLK
SYNC
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Digital Input Voltage (Note 4) ........ DGND – 0.3V to 10V
Digital Output Voltage........ DGND – 0.3V to V
DIG
+ 0.3V
Power Dissipation.............................................. 500mW
Operating Ambient Temperature Range
LTC1609AC/LTC1609C............................ 0°C to 70°C
LTC1609AI/LTC1609I ......................... – 40°C to 85°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
ORDER PART
NUMBER
LTC1609CSW
LTC1609ISW
LTC1609ACSW
LTC1609AISW
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2
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5
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TOP VIEW
SW PACKAGE
20-LEAD PLASTIC SO
20
19
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13
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R1
IN
AGND1
R2
IN
R3
IN
CAP
REF
AGND2
SB/BTC
EXT/INT
DGND
V
DIG
V
ANA
PWRD
BUSY
CS
R/C
TAG
DATA
DATACLK
SYNC
T
JMAX
= 125°C, θ
JA
= 130°C/W
The ● indicates specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. With external reference (Notes 5, 6).
LTC1609 LTC1609A
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Resolution ● 16 16 Bits
No Missing Codes ● 15 16 Bits
Transition Noise 0.9 0.9 LSB
RMS
Integral Linearity Error (Note 7) ● ±3 ±2LSB
Differential Linearity Error ● –2 3 –1 1.75 LSB
Bipolar Zero Error External Reference = 2.5V (Note 8), Bipolar Ranges ● ±10 ±10 mV
CONVERTER CHARACTERISTICS
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3
LTC1609
1609fa
LTC1609 LTC1609A
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
S/(N + D) Signal-to-(Noise 1kHz Input Signal (Note 14) 87.5 85 87.5 dB
+ Distortion) Ratio 10kHz Input Signal 87 87 dB
20kHz, –60dB Input Signal 30 30 dB
THD Total Harmonic 1kHz Input Signal, First 5 Harmonics – 100 – 100 –96 dB
Distortion 10kHz Input Signal, First 5 Harmonics –94 –94 dB
Peak Harmonic or 1kHz Input Signal –102 –102 dB
Spurious Noise 10kHz Input Signal –94 –94 dB
Full-Power Bandwidth (Note 15) 275 275 kHz
–3dB Input Bandwidth 1 1 MHz
Aperture Delay 40 40 ns
Aperture Jitter Sufficient to Meet AC Specs Sufficient to Meet AC Specs
Transient Response Full-Scale Step (Note 9) 2 2 µs
Overvoltage Recovery (Note 16) 150 150 ns
LTC1609/LTC1609A
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Analog Input Range (Note 9) 4.75V ≤ V
ANA
≤ 5.25V, 4.75V ≤ V
DIG
≤ 5.25V, ● ±10, 0V to 5V, etc. V
(See Tables 1a and 1b)
C
IN
Analog Input Capacitance 10 pF
R
IN
Analog Input Impedance See Tables 1a and 1b kΩ
The ● indicates specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 5)
(Notes 5, 14)
A ALOG I PUT
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DY A IC ACCURACY
UW
LTC1609/LTC1609A
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
REF
Output Voltage I
OUT
= 0 ● 2.470 2.500 2.520 V
V
REF
Output Tempco I
OUT
= 0 ±5 ppm/°C
Internal Reference Source Current 1 µA
External Reference Voltage for Specified Linearity (Notes 9, 10) 2.30 2.50 2.70 V
External Reference Current Drain External Reference = 2.5V (Note 9) ● 100 µA
CAP Output Voltage I
OUT
= 0 2.50 V
The ● indicates specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 5)
INTERNAL REFERENCE CHARACTERISTICS
UU U
The ● indicates specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. With external reference (Notes 5, 6).
LTC1609 LTC1609A
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Bipolar Zero Error Drift Bipolar Ranges ±2 ±2 ppm/°C
Unipolar Zero Error External Reference = 2.5V, Unipolar Ranges ● ±10 ±10 mV
Unipolar Zero Error Drift Unipolar Ranges ±2 ±2 ppm/°C
Full-Scale Error Drift ±7 ±7 ppm/°C
Full-Scale Error External Reference = 2.5V (Notes 12, 13) ● ±0.50 ±0.25 %
Full-Scale Error Drift External Reference = 2.5V ±2 ±2 ppm/°C
Power Supply Sensitivity
V
ANA
= V
DIG
= V
DD
V
DD
= 5V ±5% (Note 9) ±8 ±8LSB
CONVERTER CHARACTERISTICS
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LTC1609ISW#PBF

Mfr. #:
Buy LTC1609ISW#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Analog to Digital Converters - ADC 16-B, 200ksps, Serial Smpl ADC
Lifecycle:
New from this manufacturer.
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