WM5628CDW 데이터 시트보기 (PDF) - Wolfson Microelectronics plc

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WM5628CDW

3 & 5V Octal 8-Bit Voltage Output DAC with Serial Interface

Wolfson Microelectronics plc 

WM5628L, WM5628

Electrical Characteristics: WM5628 & WM5628L (continued)

VDD = 3 .6V, GND = 0 V, VREF = 2 V x 1 gain, RL = 10 kΩ, CL = 100 pF, TA = full range, unless otherwise stated.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

Dynamic Performance

Output settling time

To 1/2LSB, VDD=3V & 5V (note 13)

Output slew rate

Input bandwidth

(note 14)

Large Signal Bandwidth

Measured at -3dB point

Digital Crosstalk

Clk = 1MHz sq wave measured at

DACA - DACD

TYP

10

1

100

100

-50

MAX UNIT

µs

V/µs

kHz

kHz

dB

Notes:

1. Absolute Maximum Ratings are stress ratings only.

Permanent damage to the device may be caused by

continuously operating at or beyond these limits.

Device functional operating range limits are given

under Recommended Operating Conditions.

Guaranteed performance specifications are given

under Electrical Characteristics at the test conditions

specified.

2. Total Unadjusted Error is the sum of integral linearity

error, zero code error and full scale error over the input

code range.

3. Differential Nonlinearity (DNL) is the difference

between the measured and ideal 1 LSB amplitude

change of any two adjacent codes. A guarantee of

monotonicity means the output voltage changes in the

same direction (or remains constant) as a change in

the digital input code.

4. Integral Nonlinearity (INL) is the maximum deviation of

the output from the line between zero and full scale

(excluding the effects of zero code and full-scale

errors).

5. Zero code error is the deviation from zero voltage

output when the digital input code is zero.

6. Zero code error temperature coefficient is given by:

6

ZCETC = (ZCE(Tmax - ZCE(Tmin)) /VREF x 10 / (Tmax

- Tmin)

7. Zero-code Error Rejection Ratio (ZCE-RR) is

measured by varying the VDD voltage, from 4.5 to 5.5

V d.c., and measuring the proportion of this signal

imposed on the zero-code output voltage.

8. Full-scale error is the deviation from the ideal full-scale

output (VREF - 1LSB) with an output load of 10kΩ

9. Full-Scale Temperature Co-efficient is given by:

FSETC = (FSE(Tmax) - FSE(Tmin)) / VREF x 106

/ Tmax - T min)

10. Full Scale Error Rejection Ratio (FSE-RR) is

measured by varying the VDD voltage from 4.5 to

5.5 V d.c. and measuring the proportion of this signal

imposed on the full-scale output voltage

11 Reference feedthrough is measured at a DAC output

with an input code = 00 Hex with a VREF input = 1 Vdc

+ 1 VPP at 10kHz

12. Channel to channel isolation is measured at a DAC

output with an input code of one DAC to FF Hex and

the code oa all other DACs to oo Hex with a VREF in-

put = 1 Vdc + 1 Vpp at 10kHz

13 Setting time is the time for the output signal to remain

within ±0.5 LSB of the final measurement value for a

digital input code change of 00 Hex to FF Hex. For

WM 5628: VDD = 5V, VREF = 2V and range = x 2. For

WM5628L: VDD = 3, VREF = 1.25V and range = x 2.

14 Reference bandwidth is the -3dB bandwidth with an

input at VREF = 1.25 Vdc =+ 2 Vpp with a digital input

code of full-scale.

Wolfson Microelectronics

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