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参数资料
| 型号： | DC1278A |
| 厂商： | Linear Technology |
| 文件页数： | 7/20页 |
| 文件大小： | 0K |
| 描述： | BOARD SAR ADC LTC2351-14 |
| 软件下载： | QuikEval II System |
| 设计资源： | DC1278A Design File DC1278A Schematic |
| 标准包装： | 1 |
| 系列： | QuikEval-II™ |
| ADC 的数量： | 1 |
| 位数： | 14 |
| 采样率（每秒）： | 1.5M |
| 数据接口： | 串行，SPI? |
| 输入范围： | 0 ~ 2.5 V |
| 在以下条件下的电源（标准）： | 16.5mW @ 1.5MSPS |
| 已用 IC / 零件： | LTC2351-14 |
| 已供物品： | 板 |
| 相关产品： | LTC2351HUH-14#PBF-ND - IC ADC 14BIT 1.5MSPS 32-QFN LTC2351HUH-12#PBF-ND - IC ADC 12BIT 1.5MSPS 32-QFN LTC2351HUH-14#TRPBF-ND - IC ADC 14BIT 1.5MSPS 32-QFN LTC2351HUH-12#TRPBF-ND - IC ADC 12BIT 1.5MSPS 32-QFN LTC2351CUH-12#TRPBF-ND - IC ADC 12BIT 1.5MSPS 32-QFN LTC2351IUH-14#TRPBF-ND - IC ADC 14BIT 1.5MSPS 32-QFN LTC2351IUH-12#TRPBF-ND - IC ADC 12BIT 1.5MSPS 32-QFN LTC2351CUH-14#TRPBF-ND - IC ADC 14BIT 1.5MSPS 32-QFN LTC2351CUH-12#PBF-ND - IC ADC 12BIT 1.5MSPS 32-QFN LTC2351IUH-12#PBF-ND - IC ADC 12BIT 1.5MSPS 32-QFN 更多... |
LTC2351-14
15
235114fb
235114 F03
FREQUENCY (Hz)
–100
CMRR
(dB)
–60
–20
–40
–80
0
10k
100k
1M
10M 100M 1G
–120
100
1k
INPUT VOLTAGE (V)
2'S
COMPLEMENT
OUTPUT
CODE
235114 F05
011...111
011...110
011...101
100...000
100...001
100...010
FS – 1LSB
–FS
INPUT VOLTAGE (V)
STRAIGHT
BINAR
Y
OUTPUT
CODE
235114 F04
111...111
111...110
111...101
000...000
000...001
000...010
FS – 1LSB
0
APPLICATIONS INFORMATION
Figure 5 shows the ideal input/output characteristics for
the LTC2351-14 in bipolar mode (BIP = HIGH). The code
transitions occur midway between successive integer LSB
values (i.e., 0.5LSB, 1.5LSB, 2.5LSB, FS – 1.5LSB). The
output code is 2’s complement with 1LSB = 2.5V/16384 =
153μV for the LTC2351-14. The LTC2351-14 has 0.7 LSB
RMS of gaussian white noise.
INPUT SPAN VERSUS REFERENCE VOLTAGE
The differential input range has a unipolar voltage span
that equals the difference between the voltage at the
reference buffer output VREF (Pin 23) and the voltage at
ground. The differential input range of the ADC is 0V to
2.5V when using the internal reference. The internal ADC
is referenced to these two nodes. This relationship also
holds true with an external reference.
DIFFERENTIAL INPUTS
The ADC will always convert the difference of CH+ minus
CH–, independent of the common mode voltage at any pair
of inputs. The common mode rejection holds up at high
frequencies (see Figure 3.) The only requirement is that
both inputs not go below ground or exceed VDD.
Figure 3. CMRR vs Frequency
Integral nonlinearity errors (INL) and differential nonlinear-
ity errors (DNL) are largely independent of the common
mode voltage. However, the offset error will vary. DC CMRR
is typically better than –90dB.
Figure 4 shows the ideal input/output characteristics for
the LTC2351-14 in unipolar mode (BIP = LOW). The code
transitions occur midway between successive integer LSB
values (i.e., 0.5LSB, 1.5LSB, 2.5LSB, FS – 1.5LSB). The
output code is straight binary with 1LSB = 2.5V/16384 =
153μV for the LTC2351-14. The LTC2351-14 has 0.7 LSB
RMS of gaussian white noise.
Figure 5. LTC2351-14 Transfer Characteristic
in Bipolar Mode (BIP = HIGH)
Figure 4. LTC2351-14 Transfer Characteristic
in Unipolar Mode (BIP = LOW)
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| DC1280A | 制造商:Linear Technology 功能描述:EVAL BOARD, LT3471 BOOST / INVERTING REG 制造商:Linear Technology 功能描述:EVAL BOARD, LT3471 BOOST / INVERTING REG; Silicon Manufacturer:Linear Technology; Silicon Core Number:LT3471; Kit Application Type:Power Management; Kit Contents:Evaluation Board for LT3471; Length:40mm |
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| DC1281A-B | 制造商:Linear Technology 功能描述:BOARD DEMO 16BIT 160MSPS LTC2209 制造商:Linear Technology 功能描述:16BIT ADC Eval Brd, Rq. DC1371 制造商:Linear Technology 功能描述:16BIT ADC Eval Brd, Rq. DC1371; Silicon Manufacturer:Linear Technology; Silicon Core Number:LTC2209UP; Kit Application Type:Data Converter; Application Sub Type:ADC; Kit Contents:Board, Guide; Features:Also works with requred DC1371 |
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