Intersil Corporation HI3256 Datasheet

HI3256

Data Sheet June 1999

8-Bit, 120MSPS, Flash A/D Converter

The HI3256 is an 8-bit, high-speed, flash analog-to-digital
converter optimized for high speed, low po wer, and ease of
use. With a 120MSPS encode rate capability and full-power
analog bandwidth of 250MHz, this component is ideal for
applications requiring the highest possible dynamic
performance.

To minimize system cost and power dissipation, only a +5V
power supply is required. The HI3256 clock input interfaces
directly to TTL, ECL or PECL logic and will operate with single­ended inputs. The user may select 16-bit demultiple xed output
or 8-bit single channel digital outputs. The demultiplex ed mode
interleaves the data through two 8-bit channels at

1

/2 the clock
rate. Operation in demultiple x ed mode reduces the speed and
cost of external digital interfaces, while allowing the A/D
converter to be clocked to the full 120MSPS conv ersion r ate .

Fabricated with an advanced Bipolar process, the HI3256 is
provided in a space-saving 48-lead LQFP surface mount
plastic package and is specified over the -20

o

C to 75oC

temperature range.

Ordering Information

PART

NUMBER

HI3256JCQ -20 to 75 48 Ld LQFP Q48.7x7-S

TEMP. RANGE

(oC) PACKAGE PKG. NO.

File Number 4642.1

Features

• Differential Linearity Error. . . . . . . . . . . . . . . . . . ±0.5 LSB

• Integral Linearity Error . . . . . . . . . . . . . . . . . . . . ±0.5 LSB

• Low Input Capacitance. . . . . . . . . . . . . . . . . . . . . . . 10pF

• Wide Analog Input Bandwidth . . . . . . . . . . . . . . . 250MHz

• Low Power Consumption . . . . . . . . . . . . . . . . . . . 500mW

• Output Voltage Control Function (VOCLP pin)

• 1:2 Demultiplexed Output Pin

1

• Internal

/2Frequency Divider Circuit (w/Reset Function)

• CLK/2 Clock Output

• Compatible with PECL, ECL and TTL Digital Input Levels

• Direct Replacement for Sony CXA3256R

Applications

• LCD/PDP Monitors and Projectors (RGB Video)

• Digital Oscilloscopes

• Digital Communications (QPSK, QAM)

• Magnetic Recording (PRML)

Pinout

DV

EE3

V

RB

AGND

V

RM1

AV

CC

V

V

RM2

AV

CC

V

RM3

AGND

V

RT

DGND3

HI3256 (LQFP)

TOP VIEW

RESET/E

RESETN/T

RESETN/E

1
2

3
4
5

IN

6

7
8

9
10
11
12

13 14 15 16

CLK/E

CLK/T

CLKN/E

SELECT1

SELECT2

INV

PS

VOCLP

CLKOUT

CC2

DV

CC2

DV

PBD7

DGND2

PAD0

DGND2

PBD6

PAD1

PBD5

373839404142434445464748

36
35
34
33
32
31
30
29
28
27
26
25

2423222120191817

PAD2

PBD4

PAD3

PBD3
PBD2
PBD1
PBD0

DGND2
DV

CC2

DV

CC1

DGND1
PAD7

PAD6
PAD5
PAD4

1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143

| Copyright © Intersil Corporation 1999

Block Diagram

11

V

RT

R1

R/2

R/2

R

R

HI3256

AV

CC

5 8 30 19 31 42 12

1

2

6 BITS

INV

44

DV

CC1

DV

CC2

DGND3

(MSB)

40

PBD7

PBD6

39

PBD5

38

V

V

V

RM3

RM2

V

RM1

V

RB

63

9

7

6

IN

4

2

R/2

R

R

R

R

R

R

R

R

R

R

R

R/2

64

65

126

127

128

129

191

192

193

254

255

6 BITS

ENCODER

6 BITS

6 BITS

(8 BITS)

8 BITS

6-BIT LATCH AND ENCODER

LATCHA

LATCHB

TTLOUT

TTLOUT

PBD4

37

PBD3

36

PBD2

35

PBD1

34

P1D0

33

(LSB)

(MSB)
PAD7

28

PAD6

27

PAD5

26

PAD4

25

PAD3

24

PAD2

23

PAD1

22

PAD0

21

(LSB)

CLK/T

CLK/E

CLKN/E

RESETN/T

RESETN/E

RESET/E

15

13

14

46

48

47

3 10 45 29 20 32 41 1

AGND

DELAY

DQ

Q

SELECT1

DGND2DGND1SELECT1

DV

EE3

16
17
18

43

SELECT2
VOCLP
PS

CLKOUT

2

HI3256

Absolute Maximum Ratings T

Supply Voltage (AVCC, DV

CC1

, DV

= 25oC Thermal Information

A

) . . . . . . . . . . -0.5V to +7.0V

CC2

(DGND3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +7.0V

(DV

) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -7.0V to +0.5V

EE3

(DGND3 - DV

Analog Input Voltage (VIN). . . . . . . . . . . . . . . . . VRT - 2.7V to AV

Reference Input Voltage (VRT). . . . . . . . . . . . . . . . . +2.7V to AV

(VRB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VIN - 2.7V to AV

) . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +7.0V

EE3

CC
CC
CC

(|VRT - VRB|) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +2.5V

Digital Input Voltage

PECL/ECL . . . . . . . . . . . . . . . . . . . DV

TTL. . . . . . . . . . . . . . . . . . . . . . . . . DGND3 - 0.5 to DV

- 0.5 to DGND3 + 0.5

EE3

CC1

+ 0.5

VID (|***/E - ***N/E| (Note 2)) . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V

Recommended Operating Conditions

WITH A SINGLE POWER SUPPLY MIN TYP MAX

Supply Voltage

DV

, DV

CC1

DGND1, DGND2, AGND . . . . . . . . . . . . . -0.05 0 +0.05V

DGND3. . . . . . . . . . . . . . . . . . . . . . . . . . . +4.75 +5.0 +5.25V

DV

EE3

Analog Input Voltage (VIN). . . . . . . . . . . . . . V

Reference Input Voltage

VRT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +2.9 - +4.1V

VRB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +1.4 - +2.6V

|VRT - VRB|. . . . . . . . . . . . . . . . . . . . . . . . +1.5 - +2.1V

Digital Input Voltage

PECL (***/E) VIH . . . . . . . . . . . . . . DV

PECL (***/E) VIL. . . . . . . . . . . . . . . DV

TTL (***/T, INV) VIH . . . . . . . . . . . . . . . . . +2.0V - -

TTL (***/T, INV) VIL . . . . . . . . . . . . . . . . . - - +0.8V

Other (SELECT1/2) VIH. . . . . . . . . . . . . . - DV

Other (SELECT1/2) VIL . . . . . . . . . . . . . . - DGND1 -

VID (Note 2) (|***/E- ***N/E|) . . . . . . . . . . +0.4 +0.8 -

Max Conversion Rate (fC, Straight Mode) . . . 100 - -

Max Conversion Rate (fC, DMUX Mode) . . . . 120 - -

Ambient Temperature (TA). . . . . . . . . . . . . . . . . . . . . -20oC to 75oC

, AVCC. . . . . . . . . . . . . . . +4.75 +5.0 +5.25V

CC2

. . . . . . . . . . . . . . . . . . . . . . . . . . . -0.05 0 +0.05V

-V

RB

+ 1.5 DGND3

EE3

+ 1.1 VIH - 0.4V

EE3

CC1

RT

-

MSPS

MSPS

Thermal Resistance (Typical, Note 1) θJA (oC/W)

LQFP Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . 150oC

Maximum Storage Temperature Range. . . . . . . . . . -65oC to 150oC

Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . .300oC

(Lead Tips Only)

WITH DUAL POWER SUPPLIES MIN TYP MAX

Supply Voltage

DV

CC1

, DV

, AVCC. . . . . . . . . . . . . . . +4.75 +5.0 +5.25V

CC2

DGND1, DGND2, AGND . . . . . . . . . . . . . -0.05 0 +0.05V

DGND3. . . . . . . . . . . . . . . . . . . . . . . . . . . -0.05 0 +0.05V

DV

. . . . . . . . . . . . . . . . . . . . . . . . . . . -5.5 -5.0 -4.75V

EE3

Analog Input Voltage (VIN). . . . . . . . . . . . . . V

RB

-V

RT

Reference Input Voltage

VRT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +2.9 - +4.1V

VRB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +1.4 - +2.6V

|VRT - VRB|. . . . . . . . . . . . . . . . . . . . . . . . +1.5 - +2.1V

Digital Input Voltage

PECL/ECL VIH. . . . . . . . . . . . . . . . . . . . . . . DV

PECL/ECL VIL. . . . . . . . . . . . . . . . . . . . . . . DV

+ 1.5 DGND3

EE3

+ 1.1 VIH- 0.4

EE3

TTL (***/T, INV) VIH . . . . . . . . . . . . . . . . . 2.0 - -

TTL (***/T, INV) VIL . . . . . . . . . . . . . . . . . - - +0.8V

Other (SELECT1/2) VIH. . . . . . . . . . . . . . - DV

CC1

-

Other (SELECT1/2) VIL . . . . . . . . . . . . . . - DGND1 -

VID (Note 2) (|***/E- ***N/E|) . . . . . . . . . . +0.4 0.8 -

Max Conversion Rate (fC, Straight Mode) . . . 100 - -

MSPS

Max Conversion Rate (fC, DMUX Mode) . . . . 120 - -

MSPS

Ambient Temperature (TA). . . . . . . . . . . . . . . . . . . . . -20oC to 75oC

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTES:

1. θJA is measured with the component mounted on an evaluation PC board in free air.

2. VID: Input Voltage Differential.

Electrical Specifications DV

, AVCC, DGND3 = +5V, DGND1, 2, AGND , DV

CC1,2

= 0V, VRT = 4V, VRB = 2V, TA = 25oC

EE3

PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

Resolution - 8 - Bits

DC CHARACTERISTICS

Integral Linearity Error, INL VIN = 2V

, fC = 5MSPS - - ±0.5 LSB

P-P

Differential Linearity Error, DNL - - ±0.5 LSB

ANALOG INPUT

Analog Input Capacitance, C
Analog Input Resistance, R
Analog Input Current, I

IN

IN

IN

VIN = +3.0V, +0.07V

RMS

-10-pF
72040kΩ
0 100 285 µA

3

HI3256

Electrical Specifications DV

, AVCC, DGND3 = +5V, DGND1, 2, AGND , DV

CC1,2

= 0V, VRT = 4V, VRB = 2V, TA = 25oC (Continued)

EE3

PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

REFERENCE INPUT

Reference Resistance (Note 3), R
Reference Current (Note 4), I

REF

REF

400 600 740 Ω

2.7 3.3 5.0 mA
Offset Voltage VRT Side, EOT 6 8 10 mV
Offset Voltage VRB Side, EOB 0 1.5 3 mV

DIGITAL INPUT (PECL/ECL)

Digital Input Voltage: High, V
Digital Input Voltage: Low, V
Threshold Voltage, V

TH

Digital Input Current: High, I
Digital Input Current: Low, I

IH

IL

IH

IL

VIH = DGND3 - 0.8V -50 - +50 µA
VIL = DGND3 - 1.6V -50 - 0 µA

DV

+ 1.5 - DGND3 V

EE3

DV

+ 1.1 - VIH - 0.4 V

EE3

- DGND3 - 1.2 - V

Digital Input Capacitance - - 5 pF

DIGITAL INPUT (TTL)

Digital Input Voltage: High, V
Digital Input Voltage: Low, V
Threshold Voltage, V

TH

Digital Input Current: High, I
Digital Input Current: Low, I

IH

IL

IH

IL

VIH = 3.5V -10 - 0 µA
VIL = 0.2V -20 - 0 µA

2.0 - - V

- - 0.8 V

- 1.5 - V

Digital Input Capacitance - - 5 pF

DIGITAL OUTPUT (TTL)

Digital Output Voltage: High, V
Digital Output Voltage: Low, V

OH

OL

IOH = -2mA 2.4 - - V
IOL = 1mA - - 0.5 V

SWITCHING CHARACTERISTICS

Maximum Conversion Rate, f
Aperture Jitter, t
Sampling Delay, t
Clock High Pulse Width, t
Clock Low Pulse Width, t

AJ

DS

PW1

PW0

RESET Signal Setup Time, t
RESET Signal Hold Time, t
CLKOUT Output Delay, t

RH

DCLK

Data Output Delay (Note 5), t

Output Rise Time, t
Output Fall Time, t

r

f

RS

C

t

DO1
DO2

DMUX Mode 120 - - MSPS

-10-ps

1.2 1.4 1.6 ns

CLK 3.0 - - ns
CLK 4.5 - - ns
RESETN-CLK 1.0 - - ns
RESETN-CLK -0.5 - - ns
CL = 5pF 3.0 4.5 7.0 ns
DEMUX Mode (CL = 5pF) - t + 0.5 - ns

(CL = 5pF) 3.5 5.0 7.0 ns

0.8 to 2.0V (CL = 5pF) - 1 - ns

0.8 to 2.0V (CL = 5pF) - 1 - ns

DYNAMIC CHARACTERISTICS

Input Bandwidth VIN = 2V
S/N Ratio fC = 120MSPS, fIN = 1kHz Full Scale,

, -3dB 250 - - MHz

P-P

-46-dB

DMUX Mode
fC = 120MSPS, fIN = 29.999MHz Full Scale,

-42-dB

DMUX Mode

Error Rate (Note 6) fC = 120MSPS, fIN = 1kHz Full Scale,

--10

-12

DMUX Mode, Error > 16 LSB
fC = 120MSPS, fIN = 29.999MHz Full Scale,

--10-9TPS

DMUX Mode, Error > 16 LSB
fC = 100MSPS, fIN = 24.999MHz Full Scale,

--10-9TPS

Straight Mode, Error > 16 LSB

POWER SUPPLY OPERATING (PS = 1)

Total Supply Current, ICC + I

EE

70 98 140 mA

TPS

4

HI3256

Electrical Specifications DV

, AVCC, DGND3 = +5V, DGND1, 2, AGND , DV

CC1,2

= 0V, VRT = 4V, VRB = 2V, TA = 25oC (Continued)

EE3

PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

AVCC Pin Supply Current, AI
DV

Pin Supply Current, DICC1 20 - 36 mA

CC1

DV

Pin Supply Current, DICC2 5 - 15 mA

CC2

DGND3 Pin Supply Current, I
Power Consumption, PD

CC

EE

*6

45 - 87 mA

0.5 - 1.5 mA

400 500 700 mW

POWER SUPPLY IN POWER SAVING MODE (PS = 0)

Total Supply Current, PS ICC+ I
AVCC Pin Supply Current, PS AI
DV

Pin Supply Current, PS DICC1 - - 1.5 mA

CC1

DV

Pin Supply Current, PS DICC2 - - 1.5 mA

CC2

DGND3 Pin Supply Current, PS I
Power Consumption, PS PD

EE

CC

EE

*6

--5mA

- - 1.5 mA

- - 0.5 mA

- - 25 mW

NOTES:

3.

R

: Resistance value between VRT and VRB.

REF

VRTVRB–

I

REF

-----------------------------=

R

1

-----=

.

f

C

REF

.

4.

t

5.

6.The unit of measure TPS: Times Per Sample.
P

7. .

DICCIEE

+()VCC•

VRTVRB–()

-------------------------------------+=

V

2

REF

Timing Diagrams

V

IN

CLK

PAD0 TO D7

PBD0 TO D7

CLK OUT

RESET PULSE

N - 1

t

DS

t

t

PW1tPW0

t

DCLK

2V

0.8V

N + 2

N

N + 1

N - 2

N - 1

t

D02

t

t + 1ns

2V

0.8V

D01

N + 3

2V

0.8V

2V

0.8V

N

N + 1

N + 2

N + 3

t

PWR

FIGURE 1. DEMUX MODE TIMING CHART (SELECT1 = VCC)

5