PHILIPS NE521D

INTEGRATED CIRCUITS
NE521
High-speed dual-differential
comparator/sense amp
Product data
Supersedes data of 1994 Aug 31
File under Integrated Circuits, IC11 Handbook
2001 Aug 03
Philips Semiconductors
Product data
High-speed dual-differential comparator/sense amp
FEATURES
NE521
PIN CONFIGURATION
• 12 ns maximum guaranteed propagation delay
• 20 µA maximum input bias current
• TTL compatible strobes and outputs
• Large common-mode input voltage range
• Operates from standard supply voltages
D, N Packages
APPLICATIONS
INPUT 1A
1
14
V+
INPUT 1B
2
13
V–
NC
3
12
INPUT 2A
OUTPUT 1Y
4
11
INPUT 2B
STROBE 1G
5
10
NC
STROBE S
6
9
OUTPUT 2Y
GND
7
8
STROBE 2G
• MOS memory sense amp
• A-to-D conversion
• High-speed line receiver
TOP VIEW
SL00242
Figure 1. Pin Configuration
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
ORDER CODE
DWG #
14-Pin Plastic Dual In-Line Package (DIP)
0 °C to +70 °C
NE521N
SOT27-1
14-Pin SO Package
0 °C to +70 °C
NE521D
SOT108-1
EQUIVALENT SCHEMATIC
V+
14
R2
R1
1
–
Q2
Q5
4
6
5
Q28
Q10
R5
R3
R14
Q11
Q13
Q8
D2
R15
R23
R22
Q27
R6
V–
7
R7
R10
R8
Q18
Q16
11
D6
R24
+
R4
12
Q29
Q26
Q7
Q6
Q9
13
R25
Q30
R16
D7
Q1
R21
Q25
Q3
Q4
2
R20
R17
Q17
R9
Q36
Q19
D3
R28
R29
+
–
Q35
Q15
Q14
D4
D5
Q22
Q23
8
Q20
R12
R11
Q32
Q34
R18
Q21
Q31
R19
V+
9
R30
Q24
Q32
R26
R27
R34
SL00243
Figure 2. Equivalent Schematic
2001 Aug 03
2
853-0900 26834
Philips Semiconductors
Product data
High-speed dual-differential comparator/sense amp
BLOCK DIAGRAM
LOGIC FUNCTIONS
(1)
INPUT 1A
(2)
INPUT 1B
OUTPUT 1Y
(4)
(12)
INPUT 2A
(11)
INPUT 2B
(5)
STROBE 1G
(6)
STROBE S
NE521
VID
A +, B –
STROBE S
STROBE G
OUTPUT (Y)
VID ≤ –VOS
H
H
L
–VOS < VID < VOS
H
H
Undefined
VID ≥ VOS
H
H
H
X
L
X
H
X
X
L
H
(9)
OUTPUT 3Y
(8)
STROBE 2G
SL00244
Figure 3. Block Diagram
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
UNIT
V+
V–
Supply voltage
Positive
Negative
+7
-7
V
V
VIDR
Differential input voltage
±6
V
VIN
Input voltage
Common mode
Strobe/gate
±5
+5.25
V
V
Maximum power dissipation1
Tamb = 25 °C (still-air)
N package
D package
1420
1040
mW
mW
PD
Tamb
Operating temperature range
Tstg
Storage temperature range
Tsld
Lead soldering temperature (10 sec. max)
NOTES:
1. Derate above 25 °C at the following rates:
N package at 11.4 mW/°C
D package at 8.3 mW/°C
2001 Aug 03
3
0 to 70
°C
–65 to +150
°C
+230
°C
Philips Semiconductors
Product data
High-speed dual-differential comparator/sense amp
NE521
DC ELECTRICAL CHARACTERISTICS
V+ = +5 V; V– = –5 V, Tamb = 0 °C to +70 °C, unless otherwise specified.
LIMITS
SYMBOL
VOS
PARAMETER
TEST CONDITIONS
Min
UNIT
Typ
Max
6
7.5
10
mV
mV
7.5
20
40
µA
µA
1.0
5
12
µA
µA
Input offset voltage
At 25 °C
Over temperature range
V+ = +4.75 V; V– = –4.75 V
Input bias current
At 25 °C
Over temperature range
V+ = +5.25 V, V– = –5.25 V
Input offset current
At 25 °C
Over temperature range
V+ = +5.25 V, V– = –5.25 V
VCM
Common-mode voltage range
V+ = +4.75 V, V– = –4.75 V
+3
V
IIH
Input current
High
V+ = +5.25 V, V– = –5.25 V
VIH = 2.7 V
1G or 2G strobe
Common strobe S
50
100
µA
µA
VIL = 0.5 V
1G or 2G strobe
Common strobe S
–2.0
–4.0
mA
mA
0.5
V
V
5.25
–5.25
V
V
mA
IBIAS
IOS
IIL
Input Current
Low
VOH
VOL
Output voltage
High
Low
V+
V–
Supply voltage
Positive
Negative
Supply current
VI(S) = 2.0 V
V+ = +4.75 V; V– = –4.75 V; ILOAD = –1 mA
V+ = +5.25 V; V– = –5.25 V; ILOAD = 20 mA
–3
2.7
4.75
–4.75
3.4
5.0
–5.0
V+ = 5.25 V; V– = –5.25 V; Tamb = 25 °C
ICC+
Positive
27
35
ICC–
Negative
–15
–28
ISC
Short-circuit output current
-40
–100
mA
AC ELECTRICAL CHARACTERISTICS
Tamb = 25 °C; RL = 280Ω ; CL=15 pF; V+ = 5 V; V– = 5 V
LIMITS
SYMBOL
PARAMETER
FROM INPUT
TO OUTPUT
Min
Typ
Max
UNIT
Large-signal switching speed
Propagation delay
tPLH(D)
Low to high1
Amp
Output
8
12
tPHL(D)
High to
low1
Amp
Output
6
9
tPLH(S)
Low to
high2
Strobe
Output
4.5
10
tPHL(S)
High to low2
Strobe
Output
3.0
6
fMAX
Max. operating frequency
40
NOTES:
1. Response time measured from 0 V point of ±100 mVP-P 10 MHz square wave to the 1.5 V point of the output.
2. Response time measured from 1.5 V point of input to 1.5 V point of the output.
2001 Aug 03
4
55
ns
MHz
Philips Semiconductors
Product data
High-speed dual-differential comparator/sense amp
NE521
TYPICAL PERFORMANCE CHARACTERISTICS
Response Time for Various
Input Overdrives
VS = +5V
Tamb = 25oC
4
3
100mV
2
5mV
20mV
1
10mV
Tamb = 25oC
VS = +5V
4
3
2
50mV
5mV
1
100mV
10mV
12
0
INPUT VOLTAGE (mV)
0
INPUT VOLTAGE (mV)
Response Time vs Temperature
TESPONSE TIME (ns)
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
Response Time for Various
Input Overdrives
100
50
0
0
5
10
15
20
25
100
TPD (HL)
6
4
2
0
0
30
5
10
15
20
25
30
60
Propagation Delay for
Various Input Voltages
8
TPD (HL)
6
16
14
+140
12
10
TPD (LH)
8
TPD (HL)
6
3.0
2.0
1.0
4
VOL
2
10
20
30
40
50
60
70
100
Input Bias Current vs
Ambient Temperature
–75
11
1.0
INPUT OFSET CURRENT ( µ A)
1.1
10
9
8
7
6
+25
+75
+125
o
0.9
0.8
0.7
0.6
0.5
–25
+25
+75
+125
AMBIENT TEMPERATURE (oC)
–75
–25
+25
+75
+125
AMBIENT TEMPERATURES (oC)
Figure 4. Typical Performance Characteristics
2001 Aug 03
–25
AMBIENT TEMPERATURE ( C)
Input Offset Current vs
Ambient Temperature
12
–75
1000
INPUT VOLTAGE (m Vp–p)
INPUT VOLTAGE (mVp–p)
INPT BIAS CURRENT ( µ A)
+100
VOH
OUTPUT VOLTAGE (V)
PROPAGATION DELAY (ns)
10
+60
4.0
VS = +5V
10MHz SQUARE
WAVE INPUT
Tamb = 25oC
18
TPD (LH)
–20
Output Voltage vs
Ambient Temperature
20
VS = +5V
10MHz SQUARE
WAVE INPUT
Tamb = 25oC
20
AMBIENT TEMPERATURE (oC)
TIME — nS
Propagation Delay for
Various Input Voltages
PROPAGATION DELAY (ns)
TPD (LH)
8
50
TIME — nS
12
10
5
SL00245
Philips Semiconductors
Product data
High-speed dual-differential comparator/sense amp
DIP14: plastic dual in-line package; 14 leads (300 mil)
2001 Aug 03
6
NE521
SOT27-1
Philips Semiconductors
Product data
High-speed dual-differential comparator/sense amp
SO14: plastic small outline package; 14 leads; body width 3.9 mm
2001 Aug 03
7
NE521
SOT108-1
Philips Semiconductors
Product data
High-speed dual-differential comparator/sense amp
NE521
Data sheet status
Data sheet status [1]
Product
status [2]
Definitions
Objective data
Development
This data sheet contains data from the objective specification for product development.
Philips Semiconductors reserves the right to change the specification in any manner without notice.
Preliminary data
Qualification
This data sheet contains data from the preliminary specification. Supplementary data will be
published at a later date. Philips Semiconductors reserves the right to change the specification
without notice, in order to improve the design and supply the best possible product.
Product data
Production
This data sheet contains data from the product specification. Philips Semiconductors reserves the
right to make changes at any time in order to improve the design, manufacturing and supply.
Changes will be communicated according to the Customer Product/Process Change Notification
(CPCN) procedure SNW-SQ-650A.
[1] Please consult the most recently issued data sheet before initiating or completing a design.
[2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL
http://www.semiconductors.philips.com.
Definitions
Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For
detailed information see the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one
or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or
at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended
periods may affect device reliability.
Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips
Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or
modification.
Disclaimers
Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications
do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.
Right to make changes — Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard
cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no
responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless
otherwise specified.
 Koninklijke Philips Electronics N.V. 2001
All rights reserved. Printed in U.S.A.
Contact information
For additional information please visit
http://www.semiconductors.philips.com.
Fax: +31 40 27 24825
Date of release: 05-01
For sales offices addresses send e-mail to:
[email protected].
Document order number:
2001 Aug 03
8
9397 750 09192