MAX5365EUT+T【PDF 10/12 页】IC DAC 6BIT LP 3WIRE SER SOT23-6

收藏本站

您好，
买卖IC网欢迎您。
请登录
免费注册

买卖IC网

Sheet目录2010

6页 7页 8页 9页 [10页]11页 12页

Detailed Description

The MAX5363/MAX5364/MAX5365 voltage-output, 6-bit

DACs offer full 6-bit performance with less than 1LSB

integral nonlinearity error and less than 1LSB differen-

tial nonlinearity error, ensuring monotonic performance.

The devices use a simple 3-wire, SPI/QSPI/ MICROWIRE-

compatible serial interface that operates up to 10MHz.

The MAX5363/MAX5364/MAX5365 include an internal

reference, an output buffer, and three low-current shut-

down modes, making these devices ideal for low-

power, highly integrated applications. Figure 1 shows

the devices’ functional diagram.

Analog Section

The MAX5363/MAX5364MAX5365 employ a current-

steering DAC topology as shown in Figure 2. At the

core of the DAC is a reference voltage-to-current con-

verter (V/I) that generates a reference current. This current

is mirrored to 63 equally weighted current sources.

DAC switches control the outputs of these current mirrors

so that only the desired fraction of the total current-mirror

currents is steered to the DAC output. The current is

then converted to a voltage across a resistor, and this

voltage is buffered by the output buffer amplifier.

Output Voltage

Table 1 shows the relationship between the DAC code

and the analog output voltage. The 6-bit DAC code is

binary unipolar with 1LSB = (VREF/64). The MAX5363/

MAX5364 have a full-scale output voltage of (+2V - 1LSB)

and (+4V - 1LSB), respectively, set by the internal refer-

ences. The MAX5365 has a full-scale output voltage of

(0.9 VDD - 1LSB).

Output Buffer

The DAC voltage output is an internally buffered unity-

gain follower that slews up to ±0.4V/s. The output can

swing from 0 to full scale. With a 1/4FS to 3/4FS output

transition, the amplifier outputs typically settle to

1/2LSB in less than 5s when loaded with 10k

in par-

allel with 50pF. The buffer amplifiers are stable with any

MAX5363/MAX5364/MAX5365

Low-Cost, Low-Power, 6-Bit DACs with 3-Wire

Serial Interface in SOT23

_______________________________________________________________________________________

Typical Operating Characteristics (continued)

(VDD = +3.0V (MAX5363), VDD = +5.0V (MAX5364/MAX5365), TA = +25°C, unless otherwise noted.)

s/div

MAX5363

OUTPUT SETTLING

1/4LSB STEP UP

MAX5363/4/5-22

OUT

20mV/div

AC-COUPLED

0 x 1F TO 0 x 20

3V/div

MAX5363

OUTPUT SETTLING

1/4LSB STEP DOWN

MAX5363/4/5-23

OUT

20mV/div

AC-COUPLED

s/div

0 x 20 TO 0 x 1F

3V/div

Pin Description

PIN

NAME

FUNCTION

OUT

DAC Voltage Output

GND

Ground

3VDD

Power-Supply Input

DIN

Serial Data Input

SCLK

Serial Clock Input

Chip-Select Input

发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

*型号	*数量	厂商	批号	封装

添加更多采购

采购需求

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

我的联系方式