Sony CXD1170M Datasheet

6-bit 40MSPS High Speed D/A Converter

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Description

The CXD1170M is a 6-bit 40MHz high speed D/A
converter. The adoption of a current output system
reduces power consumption to 80mW (200Ω load at
2Vp-p output).

This IC is suitable for digital TV and graphic
display applications.

Features

• Resolution 6-bit

• Max. conversion speed 40MSPS

• Non linearity error within ±0.1LSB

• Low glitch noise

• TTL CMOS compatible input

• +5V single power supply

• Low power consumption 80mW

(200Ω load at 2Vp-p output)

Structure

Silicon gate CMOS IC

Function

6-bit 40MHz D/A converter

CXD1170M

24 pin SOP (Plastic)

Block Diagram and Pin Configuration

NC

1

NC

2

(LSB) D0

BLK

DV

CLK

D1

D2

D3

D4

D5

SS

VB

10

12

11

3

4

5

6

7

8

9

DECODER

DECODER

CLOCK

GENERATOR

LATCHES

CURRENT

CELLS

CURRENT CELLS

(FOR FULL SCALE)

BIAS VOLTAGE

GENERATOR

23

22

21

20

19

18

17

16

15

14

13

24

DD

DV

DD

DV

AVDD

IO

IO

AVDD

AVDD

VG

VREF

IREF

AV

SS

DVSS

Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.

– 1 –

E89X37B6X-PS

Absolute Maximum Ratings (Ta = 25°C)

• Supply voltage VDD 7V

•Input voltage VIN VDD to VSS V

• Output current IOUT 15 mA

• Storage temperature Tstg –55 to +150 °C

Recommended Operating Conditions

• Supply voltage AVDD, AVSS 4.75 to 5.25 V

DVDD, DVSS 4.75 to 5.25 V

• Reference input voltage VREF 2.0 V

• Clock pulse width Tpw1 12.5 (Min) ns

Tpw0 12.5 (Min) ns

• Operating temperature Topr –20 to +75 °C

Pin Description and I/O Pins Equivalent Circuit

CXD1170M

No. Symbol Equivalent circuit Description

DVDD

3

3 to 8 D0 to D5 Digital input

to
8

DVSS

DVDD

Blanking pin

9 BLK

9

No signal at "H" (Output 0V)
Output condition at "L"

DVSS

DVDD

DVDD

11 VB Connect a capacitor of about 0.1µF

11

DVSS

DVDD

Clock pin

12 CLK

12

Moreover all input pins are TTL-CMOS
compatible

DVSS

10, 13 DVSS Digital GND

14 AVSS Analog GND

– 2 –

No. Symbol Equivalent circuit Description

AVDD

15 IREF

15

AVDD

AVDD

Connect a resistance 16 times "16R" that of
output resistance value "R"

CXD1170M

16 VREF Set full scale output value

16

AVSS

AVSS

AVDD

17

17 VG Connect a capacitor of about 0.1µF

AVSS

18, 19, 22 AVDD Analog VDD

AVDD

Current output pin

20 IO

20

Voltage output can be obtained by connecting
a resistance

AVSS
AVDD

21 IO

21

AVSS

Inverted current output pin
Normally dropped to analog GND

23, 24 DVDD Digital VDD

Eleoctrical Characteristics (fCLK = 40MHz, VDD = 5V, ROUT = 200Ω, VREF = 2.0V, Ta = 25°C)

Item
Resolution
Maximum conversion speed
Minimum conversion speed
Linearity error
Differential linear error
Full scale output voltage
Full scale output current
Offset output voltage
Power supply current

Digital
input current

High level

Low level
Setup time
Hold time
Propagation delay time

Symbol

n
fMAX
fMIN
EL
ED
VFS
IFS
VOS
IDD
IIH
IIL

tS
tH
tPD

14.3MHz, at COLOR BAR DATA input

Measurement conditions

Min.

0.5
–0.3
–0.1

1.85

13

–5

5

10

Typ.

6

1.95
10

14.5

10

Max.

40

0.5

0.1

2.05
15

1

16

5

Unit

bit

MSPS

MHz

LSB
LSB

V
mA
mV
mA

µA
µA

ns
ns
ns

Glitch energy

GE

ROUT = 75Ω

– 3 –

30

pV-s