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| 型号： | HI5741-EVS |
| 厂商： | Intersil |
| 文件页数： | 3/13页 |
| 文件大小： | 0K |
| 描述： | EVALUATION PLATFORM HI5741 |
| 标准包装： | 1 |
| DAC 的数量： | 1 |
| 位数： | 14 |
| 采样率（每秒）： | 100M |
| 数据接口： | 并联 |
| 设置时间： | 20ns |
| DAC 型： | 电流 |
| 工作温度： | -40°C ~ 85°C |
| 已供物品： | 板 |
| 已用 IC / 零件： | HI5741 |
Application Note 9626
The worst case integral linearity of the HI5741 is speci?ed to
be less than 1.5 LSB. The implementation of laser trim
assures 14-bit match from current cell to current cell.
Figure 5 graphically illustrates the typical linearity
Shown in Figure 6, as the input code increases the output
voltage should increase. When an error of -1.0 LSB or less is
incurred, that bit can be assumed to be a missing code since
the output did not increase but rather remained the same.
performance of the HI5741.
INPUT CODE GREATER THAN ZERO
1.5
1.0
11
GREATER THAN
-1.0 LSB
0.5
0
10
ERROR
(MISSING CODE)
-0.5
-1.0
-1.5
01
00
-0.5 LSB ERROR
FIGURE 6. DNL EXAMPLE
OUTPUT
VOLTAGE
0
5000
10,000
15,000
CODE
FIGURE 5A. INL TYPICAL PERFORMANCE CURVE
0.8
The Control Ampli?er
The internal control ampli?er converts the reference voltage
appearing on the REFOUT pin to a reference current via the
circuit shown in Figure 7A. The bias voltage generated at the
control ampli?er output is used to mirror this current in all of
the precision current cells.
0.5
0.25
R SET
-
0
REF OUT
+
CONTROL
AMP OUT
-0.25
V EE
-0.5
FIGURE 7A.
-0.8
0
5000
10,000
CODE
15,000
Adjusting Full Scale
The R SET pin is used to set the Full Scale Output Current.
The output current is a function of the reference voltage
FIGURE 5B. DNL TYPICAL PERFORMANCE CURVE
Differential Linearity and Missing Codes
For a D/A Converter, the differential non-linearity is the worst
case deviation from the ideal step size throughout the entire
transfer curve. For the HI5741, this worst case deviation is
said to be at most 1.0 LSB in magnitude. For any given D/A
converter o guarantee no missing codes the converter must
be monotonic.
The de?nition of monotonicity is; as the input code is
increased the output should increase. When an input code is
increased and the output of the DAC does not increase or
reverses direction, then this converter is assumed to be non-
monotonic, or missing codes.
Monotonicity is guaranteed as long as a DNL value of
greater than -1.0 LSB is maintained.
3-3
applied to the CONTROL AMP IN pin and the value of the
R SET resistor. To calculate the I OUT Full Scale Current use
the following formula:
I OUT Full Scale = 16 x (REF OUT /R SET )
So where REF OUT = -1.20V
and R SET = 931 ?
I OUT = -20.62mA
To adjust the output full scale current, use a potentiometer in
rheostat mode as shown in Figure 7B.
The Evaluation Board
The HI5741 Evaluation board is a 1/2 size daughter board
designed to interface to the HSP-EVAL board. When used
together these boards create a ?exible and powerful DDS
system. The HSP45116 board is used to generate the high
speed digital sine wave patterns for the D/A module. The
相关PDF资料 |
PDF描述 |
|---|---|
| HI5760EVAL1 | EVALUATION PLATFORM SOIC HI5760 |
| HI5762EVAL2 | EVALUATION MOD FOR HI5762 AMP |
| HI5767EVAL1 | EVALUATION PLATFORM HI5767 |
| HI5767EVAL2 | EVALUATION PLATFORM HI5767 |
| HI5805EVAL1 | EVALUATION PLATFORM HI5805 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| HI5746 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:10-Bit, 40 MSPS A/D Converter |
| HI5746_04 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:10-Bit, 40MSPS A/D Converter |
| HI5746EVAL1 | 功能描述:EVALUATION PLATFORM HI5746 RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 传感器类型:CMOS 成像，彩色（RGB） 传感范围:WVGA 接口:I²C 灵敏度:60 fps 电源电压:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相关产品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
| HI5746KCA | 功能描述:IC ADC 10-BIT 40MSPS 28-SSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 位数:12 采样率（每秒）:3M 数据接口:- 转换器数目:- 功率耗散（最大）:- 电压电源:- 工作温度:- 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-23-6 包装:带卷 (TR) 输入数目和类型:- |
| HI5746KCAZ | 功能描述:模数转换器 - ADC A/D 10-BIT 40MSPS 28 SSOP COM TEMP RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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