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参数资料
| 型号： | LT1236CCN8-5#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 5 V, PDIP8 |
| 封装： | PLASTIC, DIP-8 |
| 文件页数： | 11/12页 |
| 文件大小： | 220K |
| 代理商： | LT1236CCN8-5#TRPBF |
8
LT1236
APPLICATIONS INFORMATION
WU
U
Kelvin Connections
Although the LT1236 does not have true force/sense
capability at its outputs, significant improvements in ground
loop and line loss problems can be achieved with proper
hook-up. In series mode operation, the ground pin of the
LT1236 carries only
≈ 1mA and can be used as a sense
line, greatly reducing ground loop and loss problems on
the low side of the reference. The high side supplies load
current so line resistance must be kept low. Twelve feet of
#22 gauge hook-up wire or 1 foot of 0.025 inch printed
circuit trace will create 2mV loss at 10mA output current.
This is equivalent to 1LSB in a 10V, 12-bit system.
The following circuits show proper hook-up to minimize
errors due to ground loops and line losses. Losses in the
output lead can be greatly reduced by adding a PNP boost
transistor if load currents are 5mA or higher. R2 can be
added to further reduce current in the output sense lead.
Effects of Air Movement on Low Frequency Noise
The LT1236 has very low noise because of the buried zener
used in its design. In the 0.1Hz to 10Hz band, peak-to-peak
noise is about 0.5ppm of the DC output. To achieve this
low noise, however, care must be taken to shield the
reference from ambient air turbulence. Air movement can
create noise because of thermoelectric differences be-
tween IC package leads and printed circuit board materials
and/or sockets. Power dissipation in the reference, even
though it rarely exceeds 20mW, is enough to cause small
Series Mode with Boost Transistor
LT1236
OUT
GND
IN
LOAD
R1
220
2N3906
R2*
INPUT
GROUND
RETURN
*OPTIONAL—REDUCES CURRENT IN OUTPUT SENSE
LEAD: R2 = 2.4k (LT1236-5), 5.6k (LT1236-10)
LT1236 AI04
temperature gradients in the package leads. Variations in
thermal resistance, caused by uneven air flow, create
differential lead temperatures, thereby causing thermo-
electric voltage noise at the output of the reference.
Standard Series Mode
LT1236
OUT
IN
GND
KEEP THIS LINE RESISTANCE LOW
LOAD
+
INPUT
GROUND
RETURN
LT1236 AI03
TYPICAL APPLICATIONS
U
LT1236 TA10
LT1236A-10
OUT
IN
GND
TRIM
R2
50k
10.000V
R1
75k
TRIM RANGE
≈ ±10mV
VIN
Negative Series Reference
LT1236-10
OUT
IN
GND
LT1236 TA04
D1
15V
R1
4.7k
–10V AT
50mA
R2
4.7k
–15V
15V
Q1
2N2905
Restricted Trim Range for Improved
Resolution, 10V, “A” Version Only
LT1236 TA03
LT1236-10
OUT
IN
GND
TRIM
VIN
VOUT
R1*
10k
CAN BE RAISED TO 20k FOR LESS
CRITICAL APPLICATIONS
*
LT1236-10 Full Trim Range (
±0.7%)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1236CCS8-10 | 功能描述:IC VREF SERIES SHUNT PREC 8-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 标准包装:2,000 系列:- 基准类型:旁路，可调节，精度 输出电压:1.24 V ~ 16 V 容差:±0.5% 温度系数:- 输入电压:1.24 V ~ 16 V 通道数:1 电流 - 阴极:100µA 电流 - 静态:- 电流 - 输出:20mA 工作温度:-40°C ~ 85°C 安装类型:通孔 封装/外壳:TO-226-3、TO-92-3（TO-226AA）成形引线 供应商设备封装:TO-92-3 包装:带卷 (TR) |
| LT1236CCS8-10#PBF | 功能描述:IC VREF SERIES SHUNT PREC 8-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 标准包装:3,000 系列:- 基准类型:旁路，精度 输出电压:3V 容差:±0.5% 温度系数:100ppm/°C 输入电压:- 通道数:1 电流 - 阴极:82µA 电流 - 静态:- 电流 - 输出:15mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-TSSOP（5 引线），SC-88A，SOT-353 供应商设备封装:SC-70-5 包装:带卷 (TR) 其它名称:296-20888-2 |
| LT1236CCS8-10#TR | 功能描述:IC VREF SERIES SHUNT PREC 8-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 标准包装:2,000 系列:- 基准类型:旁路，可调节，精度 输出电压:1.24 V ~ 16 V 容差:±0.5% 温度系数:- 输入电压:1.24 V ~ 16 V 通道数:1 电流 - 阴极:100µA 电流 - 静态:- 电流 - 输出:20mA 工作温度:-40°C ~ 85°C 安装类型:通孔 封装/外壳:TO-226-3、TO-92-3（TO-226AA）成形引线 供应商设备封装:TO-92-3 包装:带卷 (TR) |
| LT1236CCS8-10#TRPBF | 功能描述:IC VREF SERIES SHUNT PREC 8-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 标准包装:2,000 系列:- 基准类型:旁路，可调节，精度 输出电压:1.24 V ~ 16 V 容差:±0.5% 温度系数:- 输入电压:1.24 V ~ 16 V 通道数:1 电流 - 阴极:100µA 电流 - 静态:- 电流 - 输出:20mA 工作温度:-40°C ~ 85°C 安装类型:通孔 封装/外壳:TO-226-3、TO-92-3（TO-226AA）成形引线 供应商设备封装:TO-92-3 包装:带卷 (TR) |
| LT1236CCS8-10PBF | 制造商:Linear Technology 功能描述:Voltage Ref. Precision 10V 10mA SOIC8 |
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