参数资料
型号: AD5737ACPZ
厂商: Analog Devices Inc
文件页数: 33/44页
文件大小: 0K
描述: IC DAC QUAD 12BIT CUR 64-LFCSP
标准包装: 1
设置时间: 15µs
位数: 12
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 4
电压电源: 模拟和数字
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 64-VFQFN 裸露焊盘,CSP
供应商设备封装: 64-LFCSP-VQ(9x9)
包装: 托盘
输出数目和类型: 4 电流,单极
采样率(每秒): *
Data Sheet
AD5737
Rev. C | Page 39 of 44
Using Slew Rate Control
Using slew rate control can greatly reduce the current require-
ments of the AVCC supply, as shown in Figure 60.
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
AI
CC
CURRE
NT
(
A)
0mA TO 24mA RANGE
1k LOAD
fSW = 410kHz
INDUCTOR = 10H (XAL4040-103)
TA = 25°C
0
4
12
8
16
24
20
28
32
0
1
2
345
6
I OU
T
_x
CURRE
NT
(
m
A
)/
V
BO
O
S
T
_x
VOL
TA
G
E
(V
)
TIME (ms)
AICC
IOUT
VBOOST
10
06
7-
18
7
Figure 60. AICC Current vs. Time for 24 mA Step Through 1 kΩ Load
with Slew Rate Control
When using slew rate control, it is important to remember that
the output cannot slew faster than the dc-to-dc converter. The
dc-to-dc converter slews slowest at higher currents through
large loads (for example, 1 kΩ). The slew rate is also dependent
on the configuration of the dc-to-dc converter. Two examples of
the dc-to-dc converter output slew are shown in Figure 58 and
Figure 59. (VBOOST corresponds to the output voltage of the
dc-to-dc converter.)
EXTERNAL PMOS MODE
The AD5737 can also be used with an external PMOS transistor
per channel, as shown in Figure 61. This mode can be used to
limit the on-chip power dissipation of the AD5737, although this
mode does not reduce the power dissipation of the total system.
The IGATEx functionality is not typically required when using
the dynamic power control feature; therefore, Figure 61 shows
the configuration of the device for a fixed VBOOST_x supply.
In this configuration, the SWx pin is left floating, and the GNDSWx
pin is grounded. The VBOOST_x pin is connected to a minimum
supply of 7.4 V and a maximum supply of 33 V. This supply can
be sized according to the maximum load required to be driven.
The IGATEx functionality works by holding the gate of the
external PMOS transistor at (VBOOST_x 5 V). This means that
the majority of the channel’s power dissipation takes place in
the external PMOS transistor.
The external PMOS transistor should be selected to tolerate a
VDS voltage of at least the VBOOST_x voltage, as well as to handle
the power dissipation required. The external PMOS transistor
typically has minimal effect on the current output performance.
10
06
7-
19
0
R1
R2
R3
RSET_A
RLOAD
GNDSWA
VBOOST_A
(VBOOST_A – 5V)
SWA
CHARTA
IGATEA
CURRENT OUTPUT
DAC CHANNEL A
(LEFT FLOATING)
IOUT_A
DAC A
5.0V
AVCC
Figure 61. Configuration of Channel A Using IGATEx
相关PDF资料
PDF描述
AD573JD IC ADC 10BIT SAR REG 20-CDIP
AD5744RCSUZ-REEL7 IC DAC QUAD 14BIT 1LSB 32TQFP
AD574AKPZ-REEL IC ADC 12BIT W/REF/CLK 28-PLCC
AD5752AREZ IC DAC DUAL 16BIT SERIAL 24TSSOP
AD5752RBREZ-REEL7 IC DAC DUAL 16BIT SERIAL 24TSSOP
相关代理商/技术参数
参数描述
AD5737ACPZ-RL7 制造商:AD 制造商全称:Analog Devices 功能描述:Quad-Channel, 12-Bit, Serial Input, 4 mA to 20 mA Output
AD5737X 制造商:AD 制造商全称:Analog Devices 功能描述:Quad Channel, 16-Bit, Serial Input, 4-20mA Output DAC, Dynamic Power Control, HART Connectivity
AD573JD 功能描述:IC ADC 10BIT SAR REG 20-CDIP 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:-
AD573JN 功能描述:IC ADC 10BIT SAR REGISTER 20-DIP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:- 位数:14 采样率(每秒):83k 数据接口:串行,并联 转换器数目:1 功率耗散(最大):95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP(0.600",15.24mm) 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端,双极
AD573JNZ 功能描述:IC ADC 10BIT SAR REGISTER 20-DIP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率(每秒):1M 数据接口:串行,SPI? 转换器数目:1 功率耗散(最大):- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘(4x4) 包装:Digi-Reel® 输入数目和类型:8 个单端,单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6