参数资料
型号: DC1010A-C
厂商: Linear Technology
文件页数: 3/32页
文件大小: 0K
描述: BOARD DELTA SIGMA ADC LTC2487
软件下载: QuikEval System
设计资源: DC1010A Design File
DC1010A Schematic
标准包装: 1
系列: Easy Drive™, QuikEval™
ADC 的数量: 1
位数: 16
采样率(每秒): 15
数据接口: I²C,串行
已用 IC / 零件: LTC2487
已供物品:
相关产品: LTC2487IDE#TRPBF-ND - IC ADC 16BIT DELTA SIG 14-DFN
LTC2487CDE#TRPBF-ND - IC ADC 16BIT DELTA SIG 14-DFN
LTC2487CDE#PBF-ND - IC ADC 16BIT DELTA SIG 14-DFN
LTC2487IDE#PBF-ND - IC ADC 16BIT DELTA SIG 14-DFN
LTC2487
11
2487fd
PIN FUNCTIONS
GND – 0.3V to VCC + 0.3V. Within these limits, the two
selected inputs (IN+ and IN) provide a bipolar input range
VIN = (IN+ – IN) from –0.5 VREF/Gain to 0.5 VREF/Gain.
Outside this input range, the converter produces unique
over-range and under-range output codes.
CH0 to CH3 (Pin 8-Pin 11): Analog Inputs. May be pro-
grammed for single-ended or differential mode.
VCC (Pin 12): Positive Supply Voltage. Bypass to GND with
a 10μF tantalum capacitor in parallel with a 0.1μF ceramic
capacitor as close to the part as possible.
REF+, REF(Pin 13, Pin 14): 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. When performing an
on-chip temperature measurement, the minimum value
of REF = 2V.
Exposed Pad (Pin 15): Ground. This pin is ground and
must be soldered to the PCB ground plane. For prototyping
purposes, this pin may remain oating.
FUNCTIONAL BLOCK DIAGRAM
AUTOCALIBRATION
AND CONTROL
DIFFERENTIAL
3RD ORDER
Δ MODULATOR
DECIMATING FIR
ADDRESS
INTERNAL
OSCILLATOR
I2C
INTERFACE
GND
VCC
CH0
CH1
CH2
CH3
COM
MUX
IN+
IN
CA0
SCL
REF+
REF
CA1
SDA
fO
(INT/EXT)
2487 BD
+
1.7k
TEMP
SENSOR
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