MOSA

MS6610

16-bit current-output Digital-to-Analog Converter

REV 4

5/7

www.mosanalog.com

TIMING AND DATA FORMAT

The MS6610 accepts input serial data formats of 16-bit word length. Left and right data words are time

multiplexed. The MSB(bit 1) must always be First. The format of data input is shown in Figs. 2 and 3. With a LOW

level on the word select input(WS) input data is placed in the right input register and with HIGH level on the WS input

data is placed in the left register. The data in the input registers are simultaneously latched in the output registers which

control the bit switches. Internal bias currents IBL and IBR are each added to the full scale output current IFS in order

to achieve the maximum dynamic range at the outputs of OP1 and OP2(Fig. 1). The reference output voltage Vref(Fig.

1) is 2/3 VDD. In this way the maximum dynamic range is achieved over the entire power supply range.

RIGHT

WS

BCK

DATA

LSB

MSB

t

r

t

HB

t

f

t

cr

t

LB

t

HW

t

SW

LEFT

t

SD

t

HD

Fig.2

Timing and input signals.

0

1

2

15

14

13

2

1

0

MSB

LSB

15

14

13

2

1

0

MSB

LSB

RIGHT

LEFT

WS

BCK

DATA

Fig.3 Right justified format

DIGITAL INPUTS (WS, BCK, DATA)

SYM

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT

Input LOW TTL level

MS6323T

-

-

0.8

V

Input HIGH TTL level

MS6323T

2

-

-

V

Input Clock Frequency

18.4

MHz

BR

Bit Rate Data Input (Pin 3)

18.4

Mbits/s

Word Select Input (Pin 2)

384

kHz

Rise Time

12

ns

Fall Time

12

ns

Bit Clock Cycle Time

54

ns

Bit Clock High Time

15

ns

Bit Clock Low Time

15

ns

Data Set-up Time

12

ns

Data Hold Time to Bit Clock

2

ns

Word Select Hold Time

2

ns