HI3246
Data Sheet
March 2000
File Number
4517.1
8-Bit, 120MSPS, Flash A/D Converter
The HI3246 is an 8-bit, high-speed, flash analog-to-digital
converter optimized for high speed, low power, and ease of
use. With a 120MSPS encode rate capability and full-power
analog bandwidth of 200MHz, 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 HI3246 clock input interfaces
directly to TTL, ECL or PECL logic and will operate with single-
ended inputs. The user may select 16-bit demultiplexed output
or 8-bit single channel digital outputs. The demultiplexed mode
interleaves the data through two 8-bit channels at
1
/
2
the clock
rate. Operation in demultiplexed mode reduces the speed and
cost of external digital interfaces, while allowing the A/D
converter to be clocked to the full 120MSPS conversion rate.
Fabricated with an advanced Bipolar process, the HI3246 is
provided in a space-saving 48-lead MQFP surface mount
plastic package and is specified over the -20
o
C to 75
o
C
temperature range.
Features
• Differential Linearity Error. . . . . . . . . . . . . . . . . .
±0.5
LSB
• Integral Linearity Error . . . . . . . . . . . . . . . . . . . .
±0.5
LSB
• Integral Linearity Compensation Circuit
• Low Input Capacitance . . . . . . . . . . . . . . . . . . . . . . . 10pF
• Wide Analog Input Bandwidth . . . . . . . . . . . . . . . 250MHz
• Low Power Consumption . . . . . . . . . . . . . . . . . . . 500mW
• 1:2 Demultiplexed Output Pin
• Internal
1
/
2
Frequency Divider Circuit (w/Reset Function)
• CLK/2 Clock Output
• Compatible with PECL, ECL and TTL Digital Input Levels
• Direct Replacement for Sony CXA3246Q
Applications
• RGB Video (LCD, PDP)
• Digital Oscilloscopes
• Digital Communications (QPSK, QAM)
Ordering Information
PART
NUMBER
HI3246JCQ
TEMP. RANGE
(
o
C)
-20 to 75
PACKAGE
48 Ld MQFP
PKG. NO.
Q48.12x12-S
• Magnetic Recording (PRML)
Pinout
HI3246 (MQFP)
TOP VIEW
RESETN/E
RESET/E
RESETN/T
SELECT
INV
CLKOUT
DV
CC2
DGND2
PBD7
PBD6
PBD5
DV
EE3
V
RB
AGND
V
RM1
AV
CC
V
IN
V
RM2
AV
CC
V
RM3
AGND
V
RT
DGND3
1
2
3
4
5
6
7
8
9
10
48 47 46 45 44 43 42 41 40 39 38 37
36
35
34
33
32
31
30
29
28
27
PBD4
PBD3
PBD2
PBD1
PBD0
DGND2
DV
CC2
DV
CC1
DGND1
PAD7
PAD6
PAD5
PAD4
26
11
25
12
13 14 15 16 17 18 19 20 21 22 23 24
DV
CC2
CLK/T
NC
CLKN/E
DGND2
PAD0
PAD1
NC
CLK/E
NC
PAD2
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
PAD3
HI3246
Block Diagram
AV
CC
5
V
RT
11
R1
R/2
R/2
1
R
39 PBD6
2
R
63
V
RM3
9
R
64
R
35 PBD2
65
6 BITS
R
126
R
127
V
RM2
V
IN
7
6
R
129
6 BITS
R
191
V
RM1
4
R
LATCHB
TTLOUT
192
R
193
R
254
R
255
R/2
V
RB
CLK/T
CLK/E
CLKN/E
2
R/2
21 PAD0
(LSB)
DELAY
16
17
18
14
D
RESETN/T
RESETN/E
RESET/E
46
48
47
3
10
45
29
20
32
41
1
DV
EE3
Q
SELECT
Q
43 CLKOUT
NC
6 BITS
23 PAD2
22 PAD1
26 PAD5
25 PAD4
24 PAD3
27 PAD6
R
128
ENCODER
6-BIT LATCH AND ENCODER
34 PBD1
33 P1D0
(LSB)
8 BITS
6 BITS
38 PBD5
LATCHA
TTLOUT
37 PBD4
36 PBD3
(MSB)
40 PBD7
8
INV
44
DV
CC1
30
DV
CC2
19 31 42
DGND3
12
(8 BITS)
(MSB)
28 PAD7
15
13
AGND
SELECT DGND1
DGND2
2
HI3246
Absolute Maximum Ratings
T
A
= 25
o
C
Thermal Information
Thermal Resistance (Typical, Note 1)
θ
JA
(
o
C/W)
MQFP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . .
78
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . 150
o
C
Maximum Storage Temperature Range . . . . . . . . . . -65
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . .300
o
C
(Lead Tips Only)
Supply Voltage (AV
CC
, DV
CC1
, DV
CC2
) . . . . . . . . . . -0.5V to +7.0V
(DGND3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +7.0V
(DV
EE3
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -7.0V to +0.5V
(DGND3 - DV
EE3
) . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +7.0V
Analog Input Voltage (V
IN
). . . . . . . . . . . . . . . . . V
RT
- 2.7V to AV
CC
Reference Input Voltage (V
RT
). . . . . . . . . . . . . . . . . +2.7V to AV
CC
(V
RB
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V
IN
- 2.7V to AV
CC
(|V
RT
- V
RB
|) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +2.5V
Digital Input Voltage
PECL/ECL . . . . . . . . . . . . . . . . . . . DV
EE3
- 0.5 to DGND3 + 0.5
TTL . . . . . . . . . . . . . . . . . . . . . . . . . DGND3 - 0.5 to DV
CC1
+ 0.5
V
ID
(|***/E - ***N/E| (Note 2)) . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V
Recommended Operating Conditions
WITH A SINGLE POWER SUPPLY
MIN
TYP
MAX
Supply Voltage
DV
CC1
, DV
CC2
, AV
CC
. . . . . . . . . . . . . . . +4.75 +5.0 +5.25V
DGND1, DGND2, AGND . . . . . . . . . . . . . -0.05
0
+0.05V
DGND3. . . . . . . . . . . . . . . . . . . . . . . . . . . +4.75 +5.0 +5.25V
DV
EE3
. . . . . . . . . . . . . . . . . . . . . . . . . . . -0.05
0
+0.05V
Analog Input Voltage (V
IN
). . . . . . . . . . . . . . V
RB
-
V
RT
Reference Input Voltage
V
RT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +2.9
-
+4.1V
V
RB
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . +1.4
-
+2.6V
|V
RT
- V
RB
|. . . . . . . . . . . . . . . . . . . . . . . . +1.5
-
+2.1V
Digital Input Voltage
PECL (***/E) V
IH
. . . . . . . . . . . . . . DV
EE3
+ 1.5
DGND3
PECL (***/E) V
IL
. . . . . . . . . . . . . . . DV
EE3
+ 1.1
V
IH
- 0.4V
TTL (***/T, INV) V
IH
. . . . . . . . . . . . . . . . . +2.0V
-
-
TTL (***/T, INV) V
IL
. . . . . . . . . . . . . . . . .
-
-
+0.8V
Other (SELECT) V
IH
. . . . . . . . . . . . . . . .
-
DV
CC1
-
Other (SELECT) V
IL
. . . . . . . . . . . . . . . . .
-
DGND1
-
V
ID
(Note 2) (|***/E- ***N/E|) . . . . . . . . . . +0.4
+0.8
-
Max Conversion Rate (f
C
, Straight Mode) . . . 100
-
-
MSPS
Max Conversion Rate (f
C
, DMUX Mode) . . . . 120
-
-
MSPS
Ambient Temperature (T
A
) . . . . . . . . . . . . . . . . . . . . . -20
o
C to 75
o
C
WITH DUAL POWER SUPPLIES
MIN
TYP
MAX
Supply Voltage
DV
CC1
, DV
CC2
, AV
CC
. . . . . . . . . . . . . . . +4.75 +5.0 +5.25V
DGND1, DGND2, AGND . . . . . . . . . . . . . -0.05
0
+0.05V
DGND3. . . . . . . . . . . . . . . . . . . . . . . . . . . -0.05
0
+0.05V
DV
EE3
. . . . . . . . . . . . . . . . . . . . . . . . . . . -5.5
-5.0 -4.75V
Analog Input Voltage (V
IN
). . . . . . . . . . . . . . V
RB
-
V
RT
Reference Input Voltage
V
RT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +2.9
-
+4.1V
V
RB
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . +1.4
-
+2.6V
|V
RT
- V
RB
|. . . . . . . . . . . . . . . . . . . . . . . . +1.5
-
+2.1V
Digital Input Voltage
PECL/ECL V
IH
. . . . . . . . . . . . . . . . . . . . . . . DV
EE3
+ 1.5 DGND3
PECL/ECL V
IL
. . . . . . . . . . . . . . . . . . . . . . . DV
EE3
+ 1.1 V
IH
- 0.4
TTL (***/T, INV) V
IH
. . . . . . . . . . . . . . . . . 2.0
-
-
TTL (***/T, INV) V
IL
. . . . . . . . . . . . . . . . .
-
-
+0.8V
Other (SELECT) V
IH
. . . . . . . . . . . . . . . .
-
DV
CC1
-
Other (SELECT) V
IL
. . . . . . . . . . . . . . . . .
-
DGND1
-
V
ID
(Note 2) (|***/E- ***N/E|) . . . . . . . . . . +0.4
0.8
-
Max Conversion Rate (f
C
, Straight Mode) . . . 100
-
-
MSPS
Max Conversion Rate (f
C
, DMUX Mode) . . . . 120
-
-
MSPS
Ambient Temperature (T
A
) . . . . . . . . . . . . . . . . . . . . . -20
o
C to 75
o
C
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.
θ
JA
is measured with the component mounted on an evaluation PC board in free air.
2. V
ID
: Input Voltage Differential.
Electrical Specifications
PARAMETER
Resolution
DC CHARACTERISTICS
Integral Linearity Error, INL
Differential Linearity Error, DNL
ANALOG INPUT
Analog Input Capacitance, CIN
Analog Input Resistance, R
IN
Analog Input Current, I
IN
DV
CC1
,
2
, AV
CC
, DGND3 = +5V, DGND1, 2, AGND, DV
EE3
= 0V, V
RT
= 4V, V
RB
= 2V,
T
A
= 25
o
C
TEST CONDITIONS
MIN
-
TYP
8
MAX
-
±0.5
±0.5
-
40
285
UNITS
Bits
V
IN
= 2V
P-P
, f
C
= 5MSPS
-
-
-
-
LSB
LSB
V
IN
= +3.0V, +0.07V
RMS
-
7
0
10
20
100
pF
kΩ
µA
3
HI3246
Electrical Specifications
PARAMETER
REFERENCE INPUT
Reference Resistance (Note 3), R
REF
Reference Current (Note 4), I
REF
Offset Voltage V
RT
Side, EOT
Offset Voltage V
RB
Side, EOB
DIGITAL INPUT (PECL/ECL)
Digital Input Voltage: High, V
IH
Digital Input Voltage: Low, V
IL
Threshold Voltage, V
TH
Digital Input Current: High, I
IH
Digital Input Current: Low, I
IL
Digital Input Capacitance
DIGITAL INPUT (TTL)
Digital Input Voltage: High, V
IH
Digital Input Voltage: Low, V
IL
Threshold Voltage, V
TH
Digital Input Current: High, I
IH
Digital Input Current: Low, I
IL
Digital Input Capacitance
DIGITAL OUTPUT (TTL)
Digital Output Voltage: High, V
OH
Digital Output Voltage: Low, V
OL
SWITCHING CHARACTERISTICS
Maximum Conversion Rate, f
C
Aperture Jitter, t
AJ
Sampling Delay, t
DS
Clock High Pulse Width, t
PW1
Clock Low Pulse Width, t
PW0
RESET Signal Setup Time, t
RS
RESET Signal Hold Time, t
RH
CLKOUT Output Delay, t
DCLK
Data Output Delay (Note 5), t
DO1
t
DO2
Output Rise Time, t
r
Output Fall Time, t
f
DYNAMIC CHARACTERISTICS
Input Bandwidth
S/N Ratio
V
IN
= 2V
P-P
, -3dB
f
C
= 120MSPS, f
IN
= 1kHz Full Scale,
DMUX Mode
f
C
= 120MSPS, f
IN
= 29.999MHz Full Scale,
DMUX Mode
Error Rate (Note 6)
f
C
= 120MSPS, f
IN
= 1kHz Full Scale,
DMUX Mode, Error > 16 LSB
f
C
= 120MSPS, f
IN
= 29.999MHz Full Scale,
DMUX Mode, Error > 16 LSB
f
C
= 100MSPS, f
IN
= 24.999MHz Full Scale,
Straight Mode, Error > 16 LSB
250
-
-
-
-
-
-
46
42
-
-
-
-
-
-
10-12
10
-9
10
-9
MHz
dB
dB
TPS
TPS
TPS
CLK
CLK
RESETN-CLK
RESETN-CLK
C
L
= 5pF
DEMUX Mode
(C
L
= 5pF)
(C
L
= 5pF)
0.8 to 2.0V
0.8 to 2.0V
(C
L
= 5pF)
(C
L
= 5pF)
DMUX Mode
120
-
1.2
3.0
4.5
1.0
-0.5
3.0
-
3.5
-
-
-
10
1.4
-
-
-
-
4.5
t + 0.5
5.0
1
1
-
-
1.6
-
-
-
-
7.0
-
7.0
-
-
MSPS
ps
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
I
OH
= -2mA
I
OL
= 1mA
2.4
-
-
-
-
0.5
V
V
V
IH
= 3.5V
V
IL
= 0.2V
2.0
-
-
-10
-20
-
-
-
1.5
-
-
-
-
0.8
-
0
0
5
V
V
V
µA
µA
pF
V
IH
= DGND3 - 0.8V
V
IL
= DGND3 - 1.6V
DV
EE3
+ 1.5
DV
EE3
+ 1.1
-
-50
-75
-
-
-
DGND3 - 1.2
-
-
-
DGND3
V
IH
- 0.4
-
+50
0
5
V
V
V
µA
µA
pF
400
2.7
6
0
600
3.3
8
1.5
740
5.0
10
3
Ω
mA
mV
mV
DV
CC1
,
2
, AV
CC
, DGND3 = +5V, DGND1, 2, AGND, DV
EE3
= 0V, V
RT
= 4V, V
RB
= 2V,
T
A
= 25
o
C
(Continued)
TEST CONDITIONS
MIN
TYP
MAX
UNITS
4
HI3246
Electrical Specifications
PARAMETER
POWER SUPPLY
Supply Current, I
CC
+ I
EE
AV
CC
Pin Supply Current, AI
CC
DV
CC1
Pin Supply Current, DICC1
DV
CC2
Pin Supply Current, DICC2
DGND3 Pin Supply Current, I
EE
Power Consumption, PD
*6
NOTES:
3. R
REF
: Resistance value between V
RT
and V
RB
.
V
RT
–
V
RB
-
4. I
REF
= ----------------------------
.
R
REF
DV
CC1
,
2
, AV
CC
, DGND3 = +5V, DGND1, 2, AGND, DV
EE3
= 0V, V
RT
= 4V, V
RB
= 2V,
T
A
= 25
o
C
(Continued)
TEST CONDITIONS
MIN
TYP
MAX
UNITS
70
45
20
5
0.5
400
98
-
-
-
-
500
140
87
36
15
1.5
700
mA
mA
mA
mA
mA
mW
1
5. t
= ----
.
-
f
C
6. The unit of measure TPS: Times Per Sample.
(
V
RT
–
V
RB
)
2
P
D
=
(
I
CC
+
I
EE
) •
V
CC
+ ------------------------------------
.
-
7.
V
REF
Timing Diagrams
N-1
V
IN
N+2
t
DS
N
t
N+1
N+3
CLK
t
PW1
t
PW0
t
D02
2V
N
0.8V
N+2
PAD0 TO D7
N-2
PBD0 TO D7
t
DCLK
2V
CLK OUT
0.8V
N-1
t
D01
t + 1ns
2V
0.8V
2V
0.8V
N+1
N+3
RESET PULSE
t
PWR
FIGURE 1. DEMUX MODE TIMING CHART (SELECT = V
CC
)
5
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
