ltc1867lign-trpbf Linear Technology Corporation, ltc1867lign-trpbf Datasheet

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ltc1867lign-trpbf

Manufacturer Part Number
ltc1867lign-trpbf
Description
Ltc1863 - 12-bit, 8-channel 200ksps Adcs
Manufacturer
Linear Technology Corporation
Datasheet
FEATURES
BLOCK DIAGRA
APPLICATIO S
Industrial Process Control
High Speed Data Acquisition
Battery Operated Systems
Multiplexed Data Acquisition Systems
Imaging Systems
Sample Rate: 200ksps
16-Bit No Missing Codes and 2LSB Max INL
8-Channel Multiplexer with:
SPI/MICROWIRE
Signal-to-Noise Ratio: 89dB
Single 5V Operation
On-Chip or External Reference
Low Power: 1.3mA at 200ksps, 0.76mA at 100ksps
Sleep Mode
Automatic Nap Mode Between Conversions
16-Pin Narrow SSOP Package
CH7/COM
Single Ended or Differential Inputs and
Unipolar or Bipolar Conversion Modes
CH0
CH1
CH2
CH3
CH4
CH5
CH6
1
2
3
4
5
6
7
8
ANALOG
INPUT
MUX
U
TM
Serial I/O
+
W
INTERNAL
2.5V REF
LTC1863/LTC1867
SERIAL
PORT
18637 BD
16
15
14
13
12
11
10
9
V
GND
SDI
SDO
SCK
CS/CONV
V
REFCOMP
DD
REF
DESCRIPTIO
MICROWIRE is a trademark of National Semiconductor Corp.
The LTC
12-/16-bit A/D converters with serial I/O, and an internal
reference. The ADCs typically draw only 1.3mA from a
single 5V supply.
The 8-channel input multiplexer can be configured for
either single-ended or differential inputs and unipolar
or bipolar conversions (or combinations thereof). The
automatic nap and sleep modes benefit power sensitive
applications.
The LTC1867’s DC performance is outstanding with a
perature. The signal-to-noise ratio (SNR) for the LTC1867
is typically 89dB, with the internal reference.
Housed in a compact, narrow 16-pin SSOP package, the
LTC1863/LTC1867 can be used in space-sensitive as well
as low-power applications.
2LSB INL specification and no missing codes over tem-
, LTC and LT are registered trademarks of Linear Technology Corporation.
®
1863/LTC1867 are pin-compatible, 8-channel
– 0.5
– 1.0
– 1.5
– 2.0
2.0
1.5
1.0
0.5
12-/16-Bit, 8-Channel
0
Integral Nonlinearity vs Output Code
0
U
16384
LTC1863/LTC1867
(LTC1867)
OUTPUT CODE
200ksps ADCs
32768
49152
18637 GO1
65536
18637f
1

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ltc1867lign-trpbf Summary of contents

Page 1

... The signal-to-noise ratio (SNR) for the LTC1867 is typically 89dB, with the internal reference. Housed in a compact, narrow 16-pin SSOP package, the LTC1863/LTC1867 can be used in space-sensitive as well as low-power applications. , LTC and LT are registered trademarks of Linear Technology Corporation. MICROWIRE is a trademark of National Semiconductor Corp ...

Page 2

LTC1863/LTC1867 ABSOLUTE AXI U RATI GS (Notes 1, 2) Supply Voltage (V ) ................................... –0. Analog Input Voltage CH0-CH7/COM (Note 3) .......... – 0. REFCOMP (Note 4)......... – 0.3V to ...

Page 3

ACCURACY SYMBOL PARAMETER THD Total Harmonic Distortion Peak Harmonic or Spurious Noise Channel-to-Channel Isolation Full Power Bandwidth ALOG I PUT The denotes the specifications which apply over the full operating temperature range, ...

Page 4

LTC1863/LTC1867 W U POWER REQUIRE E TS range, otherwise specifications are at T SYMBOL PARAMETER V Supply Voltage DD I Supply Current DD P Power Dissipation DISS CHARACTERISTICS range, otherwise specifications are at T SYMBOL ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS Integral Nonlinearity vs Output Code 2.0 1.5 1.0 0.5 0 – 0.5 – 1.0 – 1.5 – 2.0 0 16384 32768 49152 65536 OUTPUT CODE 18637 GO1 4096 Points FFT Plot (f = ...

Page 6

LTC1863/LTC1867 W U TYPICAL PERFOR A CE CHARACTERISTICS Supply Current vs f SAMPLE 2 1.5 1.0 0 100 1000 f (ksps) SAMPLE 18637 G10 Integral Nonlinearity vs Output Code (LTC1863) 1.0 0.8 0.6 ...

Page 7

CTIO S CHO-CH7/COM (Pins 1-8): Analog Input Pins. Analog inputs must be free of noise with respect to GND. CH7/ COM can be either a separate channel or the common minus input for the other ...

Page 8

LTC1863/LTC1867 DIAGRA S (For Short Pulse Mode CS/CONV 50% t (SDO Valid After CONV ) CS/CONV 0.4V Hi-Z SDO t (SLEEP Mode Wake-Up Time ...

Page 9

APPLICATIO S I FOR ATIO APPLICATIO S I FOR ATIO Analog Input Multiplexer The analog input multiplexer is controlled by a 7-bit input data word. The input data word is defined as follows ...

Page 10

LTC1863/LTC1867 U U APPLICATIO S I FOR ATIO Driving the Analog Inputs The analog inputs of the LTC1863/LTC1867 are easy to drive. Each of the analog inputs can be used as a single- ended input relative to the GND pin ...

Page 11

U U APPLICATIO S I FOR ATIO 50 ANALOG CH0 INPUT 2000pF GND REFCOMP 10 F Figure 1a. Optional RC Input Filtering for Single-Ended Input 1000pF 50 DIFFERENTIAL ANALOG 1000pF 50 INPUTS 1000pF 10 F Figure 1b. Optional RC Input ...

Page 12

LTC1863/LTC1867 U U APPLICATIO S I FOR ATIO where V is the RMS amplitude of the fundamental fre- 1 quency and V through V are the amplitudes of the 2 N second through Nth harmonics. Internal Reference The LTC1863/LTC1867 has ...

Page 13

U U APPLICATIO S I FOR ATIO If the CS/CONV returns low during a bit decision, it can create a small error. For best performance ensure that the CS/CONV returns low either within 100ns after the conver- sion starts (i.e. ...

Page 14

LTC1863/LTC1867 U U APPLICATIO S I FOR ATIO CS/CONV SCK 1 2 SDI SD 0S DON'T CARE t CONV SDO MSB = D11 D10 (LTC1863) Hi-Z t CONV SDO MSB = D15 D14 D13 (LTC1867) Hi-Z Figure 7. Example 2, ...

Page 15

... FLASH SHALL NOT EXCEED 0.010" (0.254mm) 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 16

... A at 250ksps 1ksps, SO-8 and MSOP Packages 450 A at 150ksps 1ksps, SO-8 and MSOP Packages 850 A at 250ksps 1ksps, SO-8 and MSOP Packages 450 A at 150ksps 1ksps, SO-8 and MSOP Packages www.linear.com 18637f LT/TP 0504 1K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2004 ...

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