LTC1609CSW#TRPBF Linear Technology, LTC1609CSW#TRPBF Datasheet

IC ADC SRL 16BIT 200KSPS 20-SOIC

LTC1609CSW#TRPBF

Manufacturer Part Number
LTC1609CSW#TRPBF
Description
IC ADC SRL 16BIT 200KSPS 20-SOIC
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1609CSW#TRPBF

Number Of Bits
16
Sampling Rate (per Second)
200k
Data Interface
Serial
Number Of Converters
1
Power Dissipation (max)
100mW
Voltage Supply Source
Analog and Digital
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
20-SOIC (0.300", 7.50mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Price
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FEATURES
TYPICAL APPLICATIO
APPLICATIO S
ANALOG INPUT
– 10V TO 10V
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: 50 W
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
+
2.5V
200kHz, 16-Bit Serial Sampling ADC Configured for 10V Inputs
100
200
2.2 F
+
2.5V
U
33.2k
2.2 F
10
11
12
13
14
1
2
3
4
5
6
7
8
9
R1
AGND1
R2
R3
NC
CAP
REF
NC
AGND2
NC
NC
SB/BTC
EXT/INT
DGND
U
IN
IN
IN
LTC1609
DATACLK
PWRD
BUSY
SYNC
DATA
V
V
TAG
ANA
R/C
DIG
CS
NC
NC
NC
NC
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1609 TA01
+
DESCRIPTIO
SERIAL INTERFACE
The LTC
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,
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.
10 F
5V and 3.3V and unipolar inputs of 0V to 10V, 0V to 5V
, LTC and LT are registered trademarks of Linear Technology Corporation.
with Multiple Input Ranges
16-Bit, 200ksps, Serial ADC
0.1 F
®
1609 is a 200ksps, serial sampling 16-bit A/D
5V
U
–100
–120
–130
–20
–40
–60
–80
0
0
Nonaveraged 4096 Point FFT Plot
25
FREQUENCY (kHz)
50
LTC1609
f
f
SINAD = 87.2dB
THD = –100.1dB
SAMPLE
IN
= 1kHz
75
= 200kHz
1609 G06
1609fa
1
100

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LTC1609CSW#TRPBF Summary of contents

Page 1

... A separate convert start input (R/C) and a data ready signal (BUSY) ease connections to FIFOs, DSPs and microprocessors. , LTC and LT are registered trademarks of Linear Technology Corporation DIG + ...

Page 2

LTC1609 ABSOLUTE MAXIMUM V .......................................................................... 7V ANA ........................................................... 0.3V DIG ANA V ........................................................................... 7V DIG Ground Voltage Difference DGND, AGND1 and AGND2 .............................. 0.3V Analog Inputs (Note ................................................ ...

Page 3

U CONVERTER CHARACTERISTICS temperature range, otherwise specifications are at T PARAMETER CONDITIONS Bipolar Zero Error Drift Bipolar Ranges Unipolar Zero Error External Reference = 2.5V, Unipolar Ranges Unipolar Zero Error Drift Unipolar Ranges Full-Scale Error Drift Full-Scale Error External Reference ...

Page 4

LTC1609 U U DIGITAL I PUTS A D DIGITAL OUTPUTS operating temperature range, otherwise specifications are at T SYMBOL PARAMETER V High Level Input Voltage IH V Low Level Input Voltage IL I Digital Input Current IN C Digital Input ...

Page 5

W U POWER REQUIREMENTS otherwise specifications are (Note 5) A SYMBOL PARAMETER V Positive Supply Voltage DD I Positive Supply Current DD P Power Dissipation DIS Note 1: Absolute Maximum Ratings are those values beyond ...

Page 6

LTC1609 W U TYPICAL PERFOR A CE CHARACTERISTICS Supply Current vs Supply Voltage 15 200kHz SAMPLE 14.5 14.0 13.5 13.0 12.5 12.0 11.5 11.0 4.5 5.0 5.5 4.75 5.25 SUPPLY VOLTAGE (V) 1609 G01 Typical INL Curve 2.0 ...

Page 7

PIN FUNCTIONS (20-Pin SO/28-Pin SSOP) R1 (Pin 1/Pin 1): Analog Input. See Table 1 and Figure 1 IN for input range connections. AGND1 (Pin 2/Pin 2): Analog Ground. Tie to analog ground plane. R2 (Pin 3/Pin 3): ...

Page 8

LTC1609 U U FUNCTIONAL BLOCK DIAGRA 20k R1 IN 10k 20k REF 2.5V REF REF BUF CAP (2.5V) AGND1 AGND2 INTERNAL DGND CLOCK U U APPLICATIO S I FOR ATIO Conversion Details The LTC1609 ...

Page 9

... In the unipolar case, the data is in straight binary format (SB/BTC = HIGH). Figures 4a and 4b show the transfer characteristics of the LTC1609. LinearView is a trademark of Linear Technology Corporation. LTC1609 , R2 and R3 ...

Page 10

LTC1609 U U APPLICATIO S I FOR ATIO INPUT RANGE WITHOUT TRIM 200 10V 33.2k + 2.2 F 200 33. 2.2 F Figure 3a. Offset/Gain ...

Page 11

U U APPLICATIO S I FOR ATIO INPUT RANGE WITHOUT TRIM V 100 10V 33.2k + 2.2 F 200 V 5V 33. 100 3.3V 33.2k + 2.2 F Table 1b. Analog Input Range Connections for ...

Page 12

LTC1609 U U APPLICATIO S I FOR ATIO Table 1c. LTC1609 Output Codes for Ideal Input Voltages DESCRIPTION Full-Scale Range 10V 5V Least Significant Bit 305 V 153 V +Full Scale (FS – 1LSB) 9.999695V 4.999847V 3.339898V Midscale 0V 0V ...

Page 13

U U APPLICATIO S I FOR ATIO Dynamic Performance FFT (Fast Fourier Transform) test techniques are used to test the ADC’s frequency response, distortion and noise at the rated throughput. By applying a low distortion sine wave and analyzing the ...

Page 14

LTC1609 U U APPLICATIO S I FOR ATIO Power Shutdown When the PWRD pin is tied high, power consumption drops to a typical value from a specified maxi- mum of 100mW. In the power shutdown mode, the ...

Page 15

U U APPLICATIO S I FOR ATIO External Clock Mode With the EXT/INT pin tied high, the DATACLK pin becomes a digital input and the LTC1609 can accept an externally supplied data clock. There are several ways in which the ...

Page 16

LTC1609 U U APPLICATIO S I FOR ATIO External Data Clock Data Read After the Conversion Figure 10 shows how the result from the current conver- sion can be read out after the conversion has been com- pleted. The externally ...

Page 17

U U APPLICATIO S I FOR ATIO EXTERNAL DATACLK BUSY t 17 SYNC DATA Figure 11. Conversion and Read Timing Using a Discontinuous Data Clock (EXT/INT Tied High, CS Tied ...

Page 18

LTC1609 U U APPLICATIO S I FOR ATIO 0 EXTERNAL DATACLK R BUSY SYNC DATA TAG Figure 12. Conversion and Read Timing Using an External Data Clock (EXT/INT Tied High). Read Previous Conversion Result During ...

Page 19

U U APPLICATIO S I FOR ATIO R/C BUSY DCLK DATA B15 B14 B13 B12 B11 B10 OUT Figure 14. Data Output from Cascading Two (CS = Low, TAG (#2) = Low) LTC1609s Together Output Data ...

Page 20

LTC1609 U U APPLICATIO S I FOR ATIO R4 200 E15 R4 R5 100 E16 33k E17 R6 5V JP1 Figure 15a. LTC1609 “Postage Stamp” Evaluation Circuit Schematic ...

Page 21

U U APPLICATIO S I FOR ATIO Figure 15b. LTC1609 “Postage Stamp” Evaluation Board Silkscreen (2 Actual Size) Figure 15d. LTC1609 “Postage Stamp” Evaluation Board Bottom Metal Layer (2 Actual Size Figure 15c. LTC1609 “Postage Stamp” Evaluation Board ...

Page 22

LTC1609 U U APPLICATIO S I FOR ATIO 200 33. 10V OFFSET LTC1662 TRIM CS/LD CS/LD V OUTA SCK SCK GND GAIN SDI SDI V CC TRIM 5V REF V OUTB + 2.2 F 0.1 F 200 0V ...

Page 23

... FLASH SHALL NOT EXCEED .254mm (.010") PER SIDE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 24

... Low Glitch Settling Time, Serial I/O SO-8 Package, Micropower, Serial I/O www.linear.com 0.394 – 0.419 (10.007 – 10.643 0.037 – 0.045 (0.940 – 1.143) 0.004 – 0.012 (0.102 – 0.305) S20 (WIDE) 1098 LT/TP 0302 1.5K REV A • PRINTED IN THE USA LINEAR TECHNOLOGY CORPORATION 2000 1609fa ...

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