- 您现在的位置：买卖IC网 > PDF目录17035 > DC1255A-A (Linear Technology)BOARD SAR ADC LTC1605 PDF资料下载
参数资料
| 型号： | DC1255A-A |
| 厂商： | Linear Technology |
| 文件页数： | 16/16页 |
| 文件大小： | 0K |
| 描述： | BOARD SAR ADC LTC1605 |
| 软件下载： | QuikEval II System |
| 设计资源： | DC1255A Design Files DC1255A Schematic |
| 标准包装： | 1 |
| 系列： | QuikEval-II™ |
| ADC 的数量： | 1 |
| 位数： | 16 |
| 采样率（每秒）： | 100k |
| 数据接口： | 并联 |
| 输入范围： | ±10 V |
| 已用 IC / 零件： | LTC1605 |
| 已供物品： | 板 |
| 相关产品： | LTC1605-2IG#PBF-ND - IC A/D CONV 16BIT SAMPLNG 28SSOP LTC1605-1IG#PBF-ND - IC A/D CONV 16BIT SAMPLNG 28SSOP LTC1605-2CN#PBF-ND - IC A/D CONV 16BIT SAMPLNG 28-DIP LTC1605-1CN#PBF-ND - IC A/D CONV 16BIT SAMPLNG 28-DIP LTC1605-1IN#PBF-ND - IC A/D CONV 16BIT SAMPLNG 28-DIP LTC1605-2IN#PBF-ND - IC A/D CONV 16BIT SAMPLNG 28-DIP LTC1605CG#PBF-ND - IC A/D CONV 16BIT SAMPLNG 28SSOP LTC1605AISW#TRPBF-ND - IC A/D CONV 16BIT SAMPLNG 28SOIC LTC1605ISW#TRPBF-ND - IC A/D CONV 16BIT SAMPLNG 28SOIC LTC1605-2CG#TRPBF-ND - IC A/D CONV 16BIT SAMPLNG 28SSOP 更多... |
9
1605fc
LTC1605
APPLICATIONS INFORMATION
WU
U
Internal Voltage Reference
The LTC1605 has an on-chip, temperature compensated,
curvature corrected, bandgap reference, which is factory
trimmed to 2.50V. The full-scale range of the ADC is equal
to (
±4 VREF) or nominally ±10V. The output of the
reference is connected to the input of a unity-gain buffer
through a 4k resistor (see Figure 3). The input to the buffer
or the output of the reference is available at REF (Pin 3).
The internal reference can be overdriven with an external
reference if more accuracy is needed. The buffer output
drives the internal DAC and is available at CAP (Pin 4). The
CAP pin can be used to drive a steady DC load of less than
2mA. Driving an AC load is not recommended because it
can cause the performance of the converter to degrade.
Figure 3. Internal or External Reference Source
S
–
+
1605 F03
INTERNAL
CAPACITOR
DAC
BANDGAP
REFERENCE
VANA
4k
2.2
F
CAP
(2.5V)
2.2
F
REF
(2.5V)
4
3
For minimum code transition noise the REF pin and the
CAP pin should each be decoupled with a capacitor to
filter wideband noise from the reference and the buffer
(2.2
F tantalum).
Offset and Gain Adjustments
The LTC1605 offset and full-scale errors have been trimmed
at the factory with the external resistors shown in Figure 4.
This allows for external adjustment of offset and full scale
in applications where absolute accuracy is important. See
Figure 5 for the offset and gain trim circuit. First adjust the
offset to zero by adjusting resistor R3. Apply an input
voltage of –152.6mV (– 0.5LSB) and adjust R3 so the code
is changing between 1111 1111 1111 1111 and 0000 0000
0000 0000. The gain error is trimmed by adjusting resistor
R4. An input voltage of 9.999542V (+FS – 1.5LSB) is
applied to VIN and R4 is adjusted until the output code is
changing between 0111 1111 1111 1110 and 0111 1111
1111 1111. Figure 6 shows the bipolar transfer character-
istic of the LTC1605.
Figure 4.
±10V Input Without Trim
+
5
4
3
2
1
2.2
F
+ 2.2F
33.2k
1%
±10V INPUT
200
1%
VIN
AGND1
REF
CAP
AGND2
LTC1605
1605 F04
Figure 5.
±10V Input with Offset and Gain Trim
INPUT VOLTAGE (V)
0V
OUTPUT
CODE
–1
LSB
1605 F06
011...111
011...110
000...001
000...000
100...000
100...001
111...110
1
LSB
BIPOLAR
ZERO
111...111
FS/2 – 1LSB
–FS/2
FS = 20V
1LSB = FS/65536
Figure 6. LTC1605 Bipolar Transfer Characteristics
DC Performance
One way of measuring the transition noise associated with
a high resolution ADC is to use a technique where a DC
+
5
4
3
2
1
2.2
F
+
2.2
F
33.2k
1%
±10V INPUT
200
1%
VIN
AGND1
REF
CAP
AGND2
LTC1605
1605 F05
576k
R4
50k
R3
50k
5V
相关PDF资料 |
PDF描述 |
|---|---|
| VI-21J-EY | CONVERTER MOD DC/DC 36V 50W |
| EVAL-AD7606-6EDZ | EVAL BOARD FOR AD7606 |
| EVAL-AD7942SDZ | BOARD EVAL FOR AD7942 |
| EVAL-AD7699EDZ | BOARD EVALUATION FOR AD7699 |
| EVAL-AD7689EDZ | BOARD EVAL AD7689 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DC1255A-B | 制造商:Linear Technology 功能描述:EVAL BOARDS FOR LTC1606 |
| DC1256A | 制造商:Linear Technology 功能描述:EVAL BOARD LTC4012 BATT CHRGR |
| DC1259A | 制造商:Linear Technology 功能描述:DEMO BOARD LTC4110 BATTERY B 制造商:Linear Technology 功能描述:DEMO BOARD LTC4110 BATTERY BACKUP MONI 制造商:Linear Technology 功能描述:DEMO BOARD, LTC4110, BATTERY BACKUP MONI 制造商:Linear Technology 功能描述:DEMO BOARD, LTC4110, BATTERY BACKUP MONITOR, Silicon Manufacturer:Linear Technology, Silicon Core Number:LTC4110, Kit Application Type:Power Management - Battery, Application Sub Type:Battery Monitor, Kit Contents:Demo Board LTC4110 |
| DC-125TB | 制造商:Thomas & Betts 功能描述:Wide Slot Duct |
| DC1261A | 功能描述:BOARD DEMO LTM8022 RoHS:否 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:µModule® 标准包装:1 系列:- 主要目的:DC/DC，步降 输出及类型:1，非隔离 功率 - 输出:- 输出电压:3.3V 电流 - 输出:3A 输入电压:4.5 V ~ 28 V 稳压器拓扑结构:降压 频率 - 开关:250kHz 板类型:完全填充 已供物品:板 已用 IC / 零件:L7981 其它名称:497-12113STEVAL-ISA094V1-ND |
发布紧急采购，3分钟左右您将得到回复。