MP7652 查看數據表（PDF） - Exar Corporation

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MP7652

4-Channel Voltage Output 15 MHz, Input Bandwidth, 8-Bit Multiplying DACs with 3-Wire Serial Digital Port and Independent References

Exar Corporation 

MP7652

ÉÉÉÉÉ SDI 1

ÉÉÉÉÉ (Data In) 0

A1 A0 D7 D6 D5 D4 D3 D2

CLK

1

0

LD 1

0

VOUT

Figure 1. Serial Data Timing and Loading

D1 D0

DAC Register

Loaded

(PRESET = “High” or open)

SDI 1

0

SDO 1

0

1

CLK 0

LD 1

0

VOUT

tDS

tDH

tCH

tPD

tCL

tCKLD2

tCKLD1

tHZ1

tLDSU

tLDCK1

tHZ2

HIGH Z

tLDCK2

tLD

tSD

Figure 2. Detail Serial Data Input Timing

+ 1/2 LSB BAND

(PRESET = “High” or open)

PRESET 1

0

VO = VREF

VOUT = 1/2 (VREFP – VREFN) + VREFN

Rev. 1.00

tRST

tSD

+ 1/2 LSB ERROR BAND

Figure 3. PRESET Operation

6

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