AD7660 datasheet(5/32 Pages) AD

Nome de Peças	AD7660

Descrição Electrónicos	14-Bit, 1 MSPS, Differential, Programmable Input PulSAR ADC

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Fabricante Electrônico	AD [Analog Devices]

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AD7952

Rev. 0 | Page 5 of 32

TIMING SPECIFICATIONS

AVDD = DVDD = 5 V; OVDD = 2.7 V to 5.5 V; VCC = 15 V; VEE = −15 V; VREF = 5 V; all specifications TMIN to TMAX, unless otherwise noted.

Table 3.

Parameter

Symbol

Min

Typ

Max

Unit

CONVERSION AND RESET (See Figure 34 and Figure 35)

Convert Pulse Width

t1

10

ns

Time Between Conversions

t2

Warp Mode/Normal Mode/Impulse Mode1

1/1.25/1.49

μs

CNVST Low to BUSY High Delay

t3

35

ns

BUSY High All Modes (Except Master Serial Read After Convert)

t4

Warp Mode/Normal Mode/Impulse Mode

850/1100/1350

ns

Aperture Delay

t5

2

ns

End of Conversion to BUSY Low Delay

t6

10

ns

Conversion Time

t7

Warp Mode/Normal Mode/Impulse Mode

850/1100/1350

ns

Acquisition Time

t8

Warp Mode/Normal Mode/Impulse Mode

200

ns

RESET Pulse Width

t9

10

ns

PARALLEL INTERFACE MODES (See Figure 36 and Figure 38)

CNVST Low to DATA Valid Delay

t10

Warp Mode/Normal Mode/Impulse Mode

850/1100/1350

ns

DATA Valid to BUSY Low Delay

t11

20

ns

Bus Access Request to DATA Valid

t12

40

ns

Bus Relinquish Time

t13

2

15

ns

MASTER SERIAL INTERFACE MODES2 (See Figure 40 and Figure 41)

CS Low to SYNC Valid Delay

t14

10

ns

CS Low to Internal SDCLK Valid Delay2

t15

10

ns

CS Low to SDOUT Delay

t16

10

ns

CNVST Low to SYNC Delay, Read During Convert

t17

Warp Mode/Normal Mode/Impulse Mode

50/290/530

ns

SYNC Asserted to SDCLK First Edge Delay

t18

3

ns

Internal SDCLK Period3

t19

30

45

ns

Internal SDCLK High3

t20

15

ns

Internal SDCLK Low3

t21

10

ns

SDOUT Valid Setup Time3

t22

4

ns

SDOUT Valid Hold Time3

t23

5

ns

SDCLK Last Edge to SYNC Delay3

t24

5

ns

CS High to SYNC High-Z

t25

10

ns

CS High to Internal SDCLK High-Z

t26

10

ns

CS High to SDOUT High-Z

t27

10

ns

BUSY High in Master Serial Read After Convert3

t28

See Table 4

CNVST Low to SYNC Delay, Read After Convert

t29

Warp Mode/Normal Mode/Impulse Mode

710/950/1190

ns

SYNC Deasserted to BUSY Low Delay

t30

25

ns

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