AD7910ARM-REEL7 datasheet(7/24 Pages) AD

Il numero della parte	AD7910ARM-REEL7

Spiegazioni elettronici	250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70

Download	24 Pages

Scroll/Zoom	100%

Produttore elettronici	AD [Analog Devices]

Homepage	http://www.analog.com

Logo

7 / 24 page

AD7910/AD7920

Rev. C | Page 7 of 24

TIMING EXAMPLES

Figure 3 and Figure 4 show some of the timing parameters from

Table 3.

TIMING EXAMPLE 1

From Figure 4, having fSCLK = 5 MHz and a throughput rate of

250 kSPS gives a cycle time of t2 + 12.5(1/fSCLK) + tACQ = 4 μs.

With t2 = 10 ns min, this leaves tACQ to be 1.49 μs. This 1.49 μs

satisfies the requirement of 250 ns for tACQ. From Figure 4, tACQ

comprises 2.5(1/fSCLK) + t8 + tQUIET, where t8 = 36 ns max. This

allows a value of 954 ns for tQUIET, satisfying the minimum

requirement of 50 ns.

TIMING EXAMPLE 2

The AD7920 can also operate with slower clock frequencies.

From Figure 4, having fSCLK = 3.4 MHz and a throughput rate of

150 kSPS gives a cycle time of t2 + 12.5(1/fSCLK) + tACQ = 6.66 μs.

With t2 = 10 ns min, this leaves tACQ to be 2.97 μs. This 2.97 μs

satisfies the requirement of 250 ns for tACQ. From Figure 4, tACQ

comprises 2.5(1/fSCLK) + t8 + tQUIET, t8 = 36 ns max. This allows a

value of 2.19 μs for tQUIET, satisfying the minimum requirement

of 50 ns. As in this example and with other slower clock values,

the signal may already be acquired before the conversion is

complete, but it is still necessary to leave 50 ns minimum tQUIET

between conversions. In this example, the signal should be fully

acquired at approximately Point C in Figure 4.

CS

SCLK

SDATA

t2

t6

t3

t4

t7

t5

t8

tCONVERT

tQUIET

ZERO

DB11

DB10

DB2

DB1

DB0

B

THREE-STATE

THREE-

STATE

Z

4 LEADING ZEROS

12

3

4

5

13

14

15

16

t1

Figure 3. AD7920 Serial Interface Timing Diagram

CS

SCLK

t2

tCONVERT

B

12

3

4

5

13

14

15

16

C

t8

tQUIET

tACQ

12.5(1/fSCLK)

1/THROUGHPUT

Figure 4. Serial Interface Timing Example

Codice articolo simile - AD7910ARM-REEL7

Produttore elettronici	Il numero della parte	Scheda tecnica	Spiegazioni elettronici
Analog Devices	AD7910ARM-REEL7	1Mb / 20P	250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70 REV. B

More results

Descrizione simile - AD7910ARM-REEL7

Produttore elettronici	Il numero della parte	Scheda tecnica	Spiegazioni elettronici
Analog Devices	AD7910	493Kb / 24P	250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70 REV. C
	AD7910	1Mb / 20P	250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70 REV. B
	AD7920	493Kb / 24P	250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70 REV. C
	AD7476A	580Kb / 24P	2.35 V to 5.25 V, 1 MSPS, 12-/10-/8-Bit ADCs in 6-Lead SC70 REV. C
	AD7477A	689Kb / 29P	2.35 V to 5.25 V, 1 MSPS, 12-/10-/8-Bit ADCs in 6-Lead SC70 Rev. F
	AD7476ABRMZ	438Kb / 28P	2.35 V to 5.25 V, 1 MSPS 12-/10-/8-Bit ADCs in 6-Lead SC70 Rev. F
	AD7476A	689Kb / 29P	2.35 V to 5.25 V, 1 MSPS, 12-/10-/8-Bit ADCs in 6-Lead SC70 Rev. F
	AD7478A	689Kb / 29P	2.35 V to 5.25 V, 1 MSPS, 12-/10-/8-Bit ADCs in 6-Lead SC70 Rev. F
	AD7278	717Kb / 29P	3 MSPS, 12-/10-/8-Bit ADCs in 6-Lead TSOT REV. C
	AD7276	501Kb / 28P	3 MSPS, 12-/10-/8-Bit ADCs in 6-Lead TSOT REV. C

More results

AD7910ARM-REEL7 Scheda tecnica(PDF) 7 Page - Analog Devices

AD7910ARM-REEL7 Scheda tecnica(HTML) 7 Page - Analog Devices

Codice articolo simile - AD7910ARM-REEL7

Descrizione simile - AD7910ARM-REEL7

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Scheda tecnica Scarica

Link URL