参数资料
| 型号： | AD5263BRU50 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 17/28页 |
| 文件大小： | 0K |
| 描述： | IC POT QUAD 50K 256POS 24-TSSOP |
| 标准包装： | 62 |
| 接片： | 256 |
| 电阻（欧姆）： | 50k |
| 电路数： | 4 |
| 温度系数： | 标准值 30 ppm/°C |
| 存储器类型： | 易失 |
| 接口： | I²C，SPI（芯片选择，设备位址） |
| 电源电压： | 2.7 V ~ 5.5 V，5 V ~ 15 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 24-TSSOP |
| 包装： | 管件 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页当前第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
AD5263
Data Sheet
Rev. F | Page 24 of 28
8-BIT BIPOLAR DAC
Figure 60 shows a low cost, 8-bit, bipolar DAC. It offers the
same number of adjustable steps, but not the precision as compared
to conventional DACs. The linearity and temperature coefficient,
especially at low values codes, are skewed by the effects of the
digital potentiometer wiper resistance. The output of this circuit is
REF
O
V
D
V
×
=
1
256
2
(4)
03142-
059
A
B
A1
W
U1
VIN
GND
VO
1
VOUT
ADR425
+15V
TRIM
+5VREF
–5VREF
A2
VI
AD5263
OP2177
V–
V+
+15V
–15V
OP2177
V–
V+
Figure 60. 8-Bit Bipolar DAC
BIPOLAR PROGRAMMABLE GAIN AMPLIFIER
For applications requiring bipolar gain, Figure 61 shows one
implementation similar to the previous circuit. The digital
potentiometer U1 sets the adjustment range. The wiper voltage
at W2 can therefore be programmed between VI and –KVI at a
given U2 setting. Configuring A2 in the noninverting mode
allows linear gain and attenuation. The transfer function is
(
)
+
×
+
=
K
D2
R1
R2
V
I
O
1
256
1
(5)
where K is the ratio of RWB1/RWA1 set by U1.
03142-
060
A1
AD5263
W1
VO
A2
B2
VSS
VDD
U2
–KVI
B1
A1
C1
VI
R2
R1
AD5263
U1
W2
VDD
VSS
OP2177
V–
V+
OP2177
V–
V+
Figure 61. Bipolar Programmable Gain Amplifier
Similar to the previous example, in the simpler (and much more
usual) case where K = 1, a single channel is used and U1 is
replaced by a matched pair of resistors to apply VI and –VI at
the ends of the digital potentiometer. The relationship becomes
I
O
V
D2
R1
R2
V
×
×
+
=
1
256
2
1
(6)
If R2 is large, a compensation capacitor of a few pF may be
needed to avoid any gain peaking.
Table 10 shows the result of adjusting D, with A2 configured with
unity gain, gain of 2, and gain of 10. The result is a bipolar amplifier
with linearly programmable gain and 256-step resolution.
Table 10. Result of Bipolar Gain Amplifier
D
R1 = ∞, R2 = 0
R1 = R2
R2 = 9 × R1
0
–1
–2
–10
64
–0.5
–1
–5
128
0
192
0.5
1
5
255
0.968
1.937
9.680
PROGRAMMABLE VOLTAGE SOURCE WITH
BOOSTED OUTPUT
For applications that require high current adjustment, such as a
laser diode driver or tunable laser, a boosted voltage source can
be considered. See Figure 62.
03142-
061
+V
W
SIGNAL
CC
RBIAS
LD
VIN
A
B
VOUT
U1
AD5263
U3 2N7002
U2
–V
IL
AD8601
Figure 62. Programmable Booster Voltage Source
In this circuit, the inverting input of the op amp forces the VOUT to
be equal to the wiper voltage set by the digital potentiometer. The
load current is then delivered by the supply via the N-channel
FET, N1. N1 power handling must be adequate to dissipate power
equal to (VIN VOUT) × IL. This circuit can source a maximum of
100 mA with a 5 V supply. For precision applications, a voltage
terminal of the digital potentiometer.
相关PDF资料 |
PDF描述 |
|---|---|
| MS27467E25F35PB | CONN PLUG 128POS STRAIGHT W/PINS |
| MS3450L20-33P | CONN RCPT 11POS WALL MNT W/PINS |
| M83723/76W18149 | CONN PLUG 14POS STRAIGHT W/PINS |
| VI-B74-MW-B1 | CONVERTER MOD DC/DC 48V 100W |
| DS1135Z-30+T&R | IC DELAY LINE 30NS 8-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD5263BRU50-REEL7 | 功能描述:IC DGTL POT QUAD 256POS 24-TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:- 标准包装:3,000 系列:DPP 接片:32 电阻（欧姆）:10k 电路数:1 温度系数:标准值 300 ppm/°C 存储器类型:非易失 接口:3 线串行（芯片选择，递增，增/减） 电源电压:2.5 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WFDFN 裸露焊盘 供应商设备封装:8-TDFN（2x3） 包装:带卷 (TR) |
| AD5263BRUZ20 | 功能描述:IC DGTL POT QUAD 20K 24-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 接片:256 电阻（欧姆）:100k 电路数:1 温度系数:标准值 35 ppm/°C 存储器类型:非易失 接口:3 线串口 电源电压:2.7 V ~ 5.25 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WDFN 裸露焊盘 供应商设备封装:8-TDFN-EP（3x3） 包装:剪切带 (CT) 产品目录页面:1399 (CN2011-ZH PDF) 其它名称:MAX5423ETA+TCT |
| AD5263BRUZ20 | 制造商:Analog Devices 功能描述:DIG POT, QUAD, 256, 15V, 20KOHM, 24TSSOP; End To End Resistance:20kohm; Track Taper:Linear; Resistance Tolerance: 30%; Supply Voltage Min:4.5V; Supply Voltage Max:16.5V; Potentiometer IC Case Style:TSSOP; No. of Pins:24; No. of ;RoHS Compliant: Yes |
| AD5263BRUZ200 | 功能描述:IC POT QUAD 200K 256POS 24-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 接片:256 电阻（欧姆）:100k 电路数:1 温度系数:标准值 35 ppm/°C 存储器类型:非易失 接口:3 线串口 电源电压:2.7 V ~ 5.25 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WDFN 裸露焊盘 供应商设备封装:8-TDFN-EP（3x3） 包装:剪切带 (CT) 产品目录页面:1399 (CN2011-ZH PDF) 其它名称:MAX5423ETA+TCT |
| AD5263BRUZ200-R7 | 制造商:Analog Devices 功能描述:QUAD, 15 V, 256-POSITION DIGITAL POTENTIOMETER WITH PIN-SELE - Tape and Reel |
发布紧急采购，3分钟左右您将得到回复。