參數(shù)資料
型號(hào): LTC2495IUHF#TR
廠商: LINEAR TECHNOLOGY CORP
元件分類: ADC
英文描述: 16-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PQCC38
封裝: 5 X 7 MM, PLASTIC, MO-220WKHD, QFN-38
文件頁(yè)數(shù): 3/32頁(yè)
文件大小: 619K
代理商: LTC2495IUHF#TR
LTC2495
2495fa
pin FuncTions
ADCINN (Pin 26): Negative ADC Input. Connect to the
output of a buffer/amplifier driven by MUXOUTN or short
directly to MUXOUTN.
MUXOUTN (Pin 27): Negative Multiplexer Output. Con-
nect to the input of an external buffer/amplifier or short
directly to ADCINN.
VCC(Pin28):PositiveSupplyVoltage.BypasstoGNDwith
a 10F tantalum capacitor in parallel with a 0.1F ceramic
capacitor as close to the part as possible.
REF+, REF(Pin 29, Pin 30): Differential Reference Input.
The voltage on these pins can have any value between
GND and VCC as long as the reference positive input,
REF+, remains more positive than the negative reference
input, REF, by at least 0.1V. The differential voltage (VREF
= REF+ – REF) sets the full-scale range (–0.5 VREF/Gain
to 0.5 VREF/Gain) for all input channels.
FO (Pin 35): Frequency Control Pin. Digital input that
controls the internal conversion clock rate. When FO is
connected to GND, the converter uses its internal oscil-
lator running at 307.2kHz. The conversion clock may
also be overridden by driving the FO pin with an external
clock in order to change the output rate and the digital
filter rejection null.
CA0, CA1, CA2 (Pins 36, 37, 38): Chip Address Control
Pins. These pins are configured as a three-state (LOW,
HIGH, Floating) address control bits for the device I2C
address.
Exposed Pad (Pin 39): Ground. This pin is ground and
mustbesolderedtothePCBgroundplane.Forprototyping
purposes, this pin may remain floating.
FuncTional block Diagram
AUTOCALIBRATION
AND CONTROL
DIFFERENTIAL
3RD ORDER
Σ MODULATOR
DECIMATING FIR
ADDRESS
INTERNAL
OSCILLATOR
I2C
2-WIRE
INTERFACE
GND
VCC
CH0
CH1
CH15
COM
MUX
SDA
REF+
REF
ADCINN
MUXOUTN
ADCINP
MUXOUTP
SCL
FO
(INT/EXT)
2495 BD
+
TEMP
SENSOR
相關(guān)PDF資料
PDF描述
LTC2495CUHF#TR 16-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PQCC38
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LTC2620CUFD#PBF SERIAL INPUT LOADING, 7 us SETTLING TIME, 12-BIT DAC, PQCC20
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