AD8038 datasheet(4/24 Pages) AD

Nome de Peças	AD8038

Descrição Electrónicos	Dual, Current-Output, Serial-Input, 16-/14-Bit DACs

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Fabricante Electrônico	AD [Analog Devices]

Página de início	http://www.analog.com

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4 / 24 page

AD5545/AD5555

Data Sheet

Rev. G | Page 4 of 24

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

AC CHARACTERISTICS

Output Voltage Setting Time

tS

To ±0.1% full scale, data = zero scale to

full scale to zero scale

0.5

μs

Reference Multiplying BW

BW

VREF = 100 mV rms, data = full scale, C1 = 5.6 pF

6.9

MHz

DAC Glitch Impulse

Q

VREF = 0 V, data = midscale minus 1 to midscale

–2

nV-s

Feedthrough Error

VOUT/VREF

Data = zero scale, VREF = 100 mV rms,

f = 1 kHz, same channel

–81

dB

Digital Feedthrough

Q

CS = logic high and fCLK = 1 MHz

7

nV-s

Total Harmonic Distortion

THD

VREF = 5 V p-p, data = full scale, f = 1 kHz to 10 kHz

–104

dB

Analog Crosstalk

CTA

VREFB = 0 V, measure VOUTB with VREFA = 5 V p-p

sine wave, data = full scale, f = 1 kHz to 10 kHz

–95

dB

Output Spot Noise Voltage

eN

f = 1 kHz, BW = 1 Hz

12

nV/√Hz

1 All static performance tests (except IOUT) are performed in a closed-loop system using an external precision OP1177 I-to-V converter amplifier. The AD5545 RFB terminal

is tied to the amplifier output. Typical values represent average readings measured at 25°C.

2 These parameters are guaranteed by design and not subject to production testing.

3 All ac characteristic tests are performed in a closed-loop system using an AD8038 I-to-V converter amplifier and the AD8065 for the THD specification.

4 All input control signals are specified with tR = tF = 2.5 ns (10% to 90% of 3 V) and timed from a voltage level of 1.5 V.

TIMING DIAGRAMS

02918- 0- 003

A1

SDI

CLK

CS

tCSS

tDS

tDH

tCH

tCL

tLDAC

tCSH

tLDS

tLDH

LDAC

A0

INPUT REG LD

D1

D0

D15

D14

D13

D12

D11

D10

Figure 2. AD5545 18-Bit Data Word Timing Diagram

02918- 0- 004

A1

SDI

CLK

CS

tCSS

tDS

tDH

tCH

tCL

tLDAC

tCSH

tLDS

tLDH

LDAC

A0

INPUT REG LD

D1

D0

D13

D12

D11

D10

D09

D08

Figure 3. AD5555 16-Bit Data Word Timing Diagram

Nº de peça semelhante - AD8038

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