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Linear Technology Electronic Components Datasheet

LTC2302 Datasheet

(LTC2302 / LTC23026) 12-Bit ADC

No Preview Available !

LTC2302 pdf
FEATURES
n 12-Bit Resolution
n 500ksps Sampling Rate
n Low Noise: SINAD = 72.8dB
n Guaranteed No Missing Codes
n Single 5V Supply
www.DataShneetA4Uu.tcoo-mShutdown Scales Supply Current with Sample
Rate
n Low Power: 14mW at 500ksps
70μW at 1ksps
35μW Sleep Mode
n 1-Channel (LTC2302) and 2-Channel (LTC2306)
Versions
n Unipolar or Bipolar Input Ranges (Software
Selectable)
n Internal Conversion Clock
n SPI/MICROWIRECompatible Serial Interface
n Separate Output Supply OVDD (2.7V to 5.25V)
n Software Compatible with the LTC2308
n 10-Pin (3mm × 3mm) DFN Package
APPLICATIONS
n High Speed Data Acquisition
n Industrial Process Control
n Motor Control
n Accelerometer Measurements
n Battery-Operated Instruments
n Isolated and/or Remote Data Acquisition
LTC2302/LTC2306
Low Noise, 500ksps,
1-/2-Channel, 12-Bit ADCs
DESCRIPTION
The LTC®2302/LTC2306 are low noise, 500ksps, 1-/2-chan-
nel, 12-bit ADCs with an SPI/MICROWIRE compatible
serial interface. These ADCs include a fully differential
sample-and-hold circuit to reduce common mode noise.
The internal conversion clock allows the external serial
output data clock (SCK) to operate at any frequency up
to 40MHz.
The LTC2302/LTC2306 operate from a single 5V supply
and draw just 2.8mA at a sample rate of 500ksps. The
auto-shutdown feature reduces the supply current to 14μA
at a sample rate of 1ksps.
The LTC2302/LTC2306 are packaged in a tiny 10-pin 3mm
× 3mm DFN. The low power consumption and small size
make the LTC2302/LTC2306 ideal for battery-operated
and portable applications, while the 4-wire SPI compat-
ible serial interface makes these ADCs a good match for
isolated or remote data acquisition systems.
TYPE
Int Reference
Ext Reference
NUMBER OF INPUT CHANNELS
128
LTC2308
LTC2302
LTC2306
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
5V
10μF
0.1μF
0.1μF
2.7V TO 5.25V
VDD OVDD
ANALOG INPUTS CH0 (IN+)
0V TO 4.096V UNIPOLAR
±2.048V BIPOLAR CH1 (IN)
ANALOG
INPUT
MUX
+ 12-BIT
500ksps
ADC
PIN NAMES IN PARENTHESIS
REFER TO LTC2302
GND
LTC2302
LTC2306
SERIAL
PORT
SDI
SDO SERIAL DATA LINK TO
ASIC, PLD, MPU, DSP
SCK OR SHIFT REGISTER
CONVST
0.1μF
VREF
10μF
23026 TA01
8192 Point FFT, fIN = 1kHz (LTC2306)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
0
fSMPL = 500kHz
SINAD = 72.8dB
THD = –88.7dB
50 100 150 200 250
FREQUENCY (kHz)
23026 TA01b
23026f
1


Linear Technology Electronic Components Datasheet

LTC2302 Datasheet

(LTC2302 / LTC23026) 12-Bit ADC

No Preview Available !

LTC2302 pdf
LTC2302/LTC2306
ABSOLUTE MAXIMUM RATINGS (Notes 1, 2)
Supply Voltage (VDD, OVDD)......................... –0.3V to 6V
Analog Input Voltage (Note 3)
CH0(IN+)-CH1(IN),
REF ..............................(GND – 0.3V) to (VDD + 0.3V)
Digital Input Voltage
(Note 3).............................(GND – 0.3V) to (VDD + 0.3V)
Digital Output Voltage ... (GND – 0.3V) to (OVDD + 0.3V)
Power Dissipation ...............................................500mW
Operating Temperature Range
LTC2302C/LTC2306C ............................... 0°C to 70°C
LTC2302I/LTC2306I.............................. –40°C to 85°C
Storage Temperature Range................... –65°C to 150°C
www.DataShPeeIt4NU.cComONFIGURATION
LTC2302
TOP VIEW
SDO 1
CONVST 2
VDD 3
IN+ 4
IN5
10 OVDD
9 SCK
11 8 SDI
7 GND
6 VREF
DD PACKAGE
10-LEAD (3mm s 3mm) PLASTIC DFN
TJMAX = 150°C, θJA = 43°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
LTC2306
TOP VIEW
SDO 1
CONVST 2
VDD 3
CH0 4
CH1 5
10 OVDD
9 SCK
11 8 SDI
7 GND
6 VREF
DD PACKAGE
10-LEAD (3mm s 3mm) PLASTIC DFN
TJMAX = 150°C, θJA = 43°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2302CDD#PBF
LTC2302CDD#TRPBF LDGV
10-Lead (3mm × 3mm) Plastic DFN
0°C to 70°C
LTC2302IDD#PBF
LTC2302IDD#TRPBF
LDGV
10-Lead (3mm × 3mm) Plastic DFN
–40°C to 85°C
LTC2306CDD#PBF
LTC2306CDD#TRPBF LDGW
10-Lead (3mm × 3mm) Plastic DFN
0°C to 70°C
LTC2306IDD#PBF
LTC2306IDD#TRPBF
LDGW
10-Lead (3mm × 3mm) Plastic DFN
–40°C to 85°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/
23026f
2


Part Number LTC2302
Description (LTC2302 / LTC23026) 12-Bit ADC
Maker Linear Technology Corporation
Total Page 20 Pages
PDF Download
LTC2302 pdf
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