IH5140 [INTERSIL]
High-Level CMOS Analog Switches; 高级别CMOS模拟开关
| 型号： | IH5140 |
| 厂家： | 
Intersil |
| 描述： | High-Level CMOS Analog Switches |
| 文件： | 总13页 (文件大小：132K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Semiconductor
IH5140 thru IH5145
High-Level CMOS Analog Switches
April 1999
Features
Description
• Super Fast
• SPST Switc
he IH5140 Family of CMOS switches utilizes Harris’ latch-
free junction isolated processing to build the fastest switches
currently available. These switches can be toggled at a rate of
- t
- t
. . . . . . . . . . . . . . . 80ns
. . . . . . . . . . . . . . . . . . . . . . . . 50ns
ON
OFF
greater than 1MHz with fast t
times (80ns typical) and
times (50ns typical), guaranteeing break before
ON
faster t
OFF
make switching. This family of switches combines the speed
of the hybrid FET DG180 family with the reliability and low
• OFF Leakages at 25 C (Typ). . . . . . . . . . . . . . . <100pA power consumption of a monolithic CMOS construction.
• Power Supply Currents . . . . . . . . . . . . . . . . . . . . <1µA
o
• Non-Latching with Supply Turn-Off
• Single Monolithic CMOS Chip
Very low quiescent power is dissipated in either the ON or
the OFF state of the switch. Maximum power supply current
is 10µA (at 25 C) from any supply and typical quiescent cur-
o
rents are in the 10nA which makes these devices ideal for
portable equipment and military applications.
• Plug-In Replacements for IH5040 Family and Part of
the DG180 Family to Upgrade Speed and Leakage
The IH5140 Family is completely compatible with TTL (5V)
logic, TTL open collector logic and CMOS logic. It is pin
compatible with Harris’ IH5040 family and part of the
DG180/DG190 family as shown in the switching state diagrams.
• Toggle Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >1MHz
• Switches Signals with ±15V Supplies. . . . . . . . . . . . >20V
P-P
• TTL, CMOS Direct Compatibility
• Internal Diode in Series with V+ for Fault Protection
Part Number Information
o
PART NUMBER
FUNCTION
SPST
TEMP. RANGE ( C)
-55 to 125
0 to 70
PACKAGE
16 Ld CerDIP
PKG. NO.
IH5140MJE
IH5140CJE
IH5140CPE
IH5141MJE
SPST
16 Ld CERDIP
16 Ld PDIP
SPST
0 to 70
Dual SPST
Dual SPST
Dual SPST
SPDT
-55 to 125
0 to 70
16 Ld CerDIP
16 Ld CERDIP
16 Ld PDIP
IH5141CJE
IH5141CPE
IH5142MJE
0 to 70
-55 to 125
0 to 70
16 Ld CerDIP
16 Ld CERDIP
16 Ld PDIP
IH5142CJE
SPDT
IH5142CPE
IH5143MJE
SPDT
0 to 70
Dual SPDT
Dual SPDT
Dual SPDT
DPST
-55 to 125
0 to 70
16 Ld CERDIP
16 Ld CerDIP
16 Ld PDIP
IH5143CJE
IH5143CPE
IH5144MJE
0 to 70
-55 to 125
0 to 70
16 Ld CERDIP
16 Ld CERDIP
16 Ld PDIP
IH5144CJE
DPST
IH5144CPE
IH5145MJE
DPST
0 to 70
Dual DPST
Dual DPST
Dual DPST
SPST
-55 to 125
0 to 70
16 Ld CerDIP
16 Ld CerDIP
16 Ld PDIP
IH5145CJE
IH5145CPE
IH5140MJE/883B
IH5141MJE/883B
IH5142MJE/883B
IH5143MJE/883B
IH5144MJE/883B
IH5145MJE/883B
NOTE:
0 to 70
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
16 Ld CERDIP
16 Ld CERDIP
16 Ld CERDIP
16 Ld CERDIP
16 Ld CERDIP
16 Ld CERDIP
Dual SPST
SPDT
Dual SPDT
DPST
Dual DPST
1. For MIL-STD-883 compliant parts, request the /883 datasheet on the above products.
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
File Number 3132.2
Copyright © Harris Corporation 1999
13-1
IH5140 thru IH5145
Pinouts
IH5140
IH5141
(PDIP, CERDIP)
TOP VIEW
(PDIP, CERDIP)
TOP VIEW
D
NC
NC
NC
NC
NC
NC
NC
1
16 S
D1
NC
NC
NC
NC
NC
NC
S
1
1
16
15
14
13
12
11
10
9
2
3
4
5
6
7
8
15 IN
14 V-
IN
2
3
4
5
6
7
8
1
V-
13 GND
GND
12 V
L
V
L
11 V+
10 NC
V+
IN
2
9
NC
D
2
S
2
IH5142
IH5143
(PDIP, CERDIP)
(PDIP, CERDIP)
TOP VIEW
TOP VIEW
D
D
1
1
16 S
1
2
3
4
5
6
7
8
16 S
1
1
1
NC
NC
2
3
4
5
6
7
8
15 IN
15 IN
1
D
2
D
3
14 V-
14 V-
S
2
S
3
13 GND
13 GND
NC
NC
NC
NC
S
4
12 V
L
12 V
L
D
4
11 V+
10 NC
11 V+
NC
10 IN
2
D
2
9
NC
9 S
2
IH5144
IH5145
(PDIP, CERDIP)
TOP VIEW
(PDIP, CERDIP)
TOP VIEW
D
D
1
1
2
3
4
5
6
7
8
16 S
1
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
S
1
1
NC
NC
15 IN
IN
1
D
S
S
D
D
2
14 V-
3
3
4
4
V-
S
2
13 GND
GND
NC
NC
NC
NC
12 V
L
V
L
11 V+
10 NC
V+
NC
IN
2
D
2
9
NC
S
2
13-2
IH5140 thru IH5145
Functional Block Diagram
TYPICAL DRIVER/GATE - IH5142
V+
S1
Q3
Q7
Q5
Q18
Q16
10kΩ
5kΩ
Q2
Q17
D1
Q1
Q8
Q12
100Ω
2
T L
V-
INPUT
S2
5kΩ
3kΩ
Q13
Q15
Q9
Q4
Q6
Q11
Q10
D2
V+
Q14
V
V-
L
13-3
IH5140 thru IH5145
Switching State Diagrams
DIP (JE, PE)
SPST IH5140
DIP (JE, PE)
DUAL SPST IH5141
V
V+
11
V
V+
11
L
L
12
12
1
8
16
15
S
1
16
15
D
D
1
1
S
D
IN
1
IN
10
9
IN
S
2
2
2
13
GND
14
13
GND
14
V-
V-
DIP (JE, PE)
SPDT IH5142
DIP (JE, PE)
DUAL SPDT IH5143
V
V+
11
V
V+
11
L
L
12
12
16
16
4
1
1
S
S
D
D
D
1
2
1
1
1
3
4
S
3
3
3
D
S
15
2
IN
1
15
IN
10
9
IN
2
8
6
13
GND
14
D
D
S
S
2
2
5
V-
4
4
13
GND
14
V-
DIP (JE, PE)
DPST IH5144
DIP (JE, PE)
DUAL DPST IH5145
V
V+
11
V
V+
11
L
L
12
12
16
4
16
4
1
3
1
3
S
1
S
S
D
D
D
D
1
1
1
3
3
S
2
15
2
IN
1
15
IN
10
9
IN
2
8
6
13
GND
14
D
D
S
S
2
2
5
V-
4
4
13
GND
14
V-
13-4
IH5140 thru IH5145
Absolute Maximum Ratings
Thermal Information
o
o
V+ to V-. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <36V Thermal Resistance (Typical)
θ
( C/W)
θ
( C/W)
JA
JC
V+ to V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <30V
CERDIP Package . . . . . . . . . . . . . . . .
PDIP Package . . . . . . . . . . . . . . . . . . .
80
100
24
N/A
D
V
V
V
V
V
V
to V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <30V
D
D
L
to V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <±22V Maximum Junction Temperature
S
o
to V-. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <33V
CERDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 C
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 C
o
to V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <30V
L
IN
o
o
to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <20V Maximum Storage Temperature Range . . . . . . . . . -65 C to 150 C
to GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <20V Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300 C
L
o
IN
Current (Any Terminal) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30mA
Operating Conditions
Temperature Ranges
Military . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 C to 125 C
Commercial. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0 C to 70 C
o
o
o
o
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.
o
Electrical Specifications 25 C, V+ = +15V, V- = -15V, V = +5V
L
MILITARY
COMMERCIAL
o o
o
o
o
o
PER CHANNEL PARAMETER
LOGIC INPUT
TEST CONDITIONS
-55 C
25 C
125 C
0 C
25 C
70 C UNITS
Input Logic Current, I
Input Logic Current, I
SWITCH
V
V
= 2.4V, Note 1
= 0.8V, Note 1
±1
±1
±1
±1
10
10
−
−
±10
±10
10
10
µA
µA
INH
IN
IN
INL
Drain Source On Resistance,
I
V
= -10mA,
50
-
50
75
-
75
-
75
100
Ω
Ω
V
S
r
= -10V to +10V
DS(ON)
ANALOG
Channel to Channel r
Match,
25 (Typ)
30 (Typ)
-
-
DS(ON)
∆r
DS(ON)
Minimum Analog Signal Handling
Capability, V
-
±11
(Typ)
-
-
±10
(Typ)
ANALOG
Switch OFF Leakage Current,
+I
V
= +10V, V = -10V
-
-
-
±0.5
±0.5
±1
100
100
200
-
-
-
±5
±5
±2
100
100
200
nA
nA
nA
D
D
D
S
I
D(OFF) S(OFF)
V
V
= -10V, V = +10V
S
Switch On Leakage Current,
+I
= V = -10V to +10V
S
I
D(ON) S(ON)
Minimum Channel to Channel Cross One Channel Off; Any Other
-
54 (Typ)
-
-
50 (Typ)
-
dB
Coupling Rejection Ratio, CCRR
Switch “ON” Time, t
Channel Switches, See
Performance Characteristics
See Switching Time Specifications and Timing Diagrams
See Switching Time Specifications and Timing Diagrams
ON
Switch “OFF” Time, t
OFF
Charge Injection, Q
See Performance
Characteristics
-
10 (Typ)
-
-
-
15 (Typ)
50 (Typ)
-
-
pC
dB
(INJ)
Minimum Off Isolation Rejection
Ratio, OIRR
f = 1MHz, R = 100Ω,
L
-
54 (Typ)
-
C
≤ 5pF, See Performance
L
Characteristics
SUPPLY
+ Power Supply Quiescent Current, I+ V+ = +15V, V- = -15V,
= +5V, See Performance
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
10
10
10
10
10
10
10
10
10
10
10
10
100
100
100
100
µA
µA
µA
µA
V
L
- Power Supply Quiescent Current, I-
+5V Supply Quiescent Current, I
Characteristics
L
Ground Supply Quiescent Current,
I
GND
NOTES:
1. Some channels are turned on by high (1) logic inputs and other channels are turned on by low (0) inputs; however 0.8V to 2.4V describes
the minimum range for switching properly. Refer to logic diagrams to find logical value of logic input required to produce ON or OFF state.
2. Typical values are for design aid only, not guaranteed and not subject to production testing.
13-5
IH5140 thru IH5145
Switching Time Specifications
t
, t
are Maximum Specifications and t
- t
is Minimum Specification
ON OFF
ON OFF
MILITARY
COMMERCIAL
TEST
CONDITIONS
o
o
o
o
o
o
PART NUMBER
SPECIFICATIONS
Switch “ON” Time, t
-55 C
25 C
100
75
125 C
0 C
25 C
70 C
UNITS
ns
IH5140, IH5141
Figure 8, Note 2
-
-
-
-
-
-
-
-
-
150
125
5
-
-
-
ON
Switch “OFF” Time, t
ns
OFF
Break-Before-Make,
10
ns
t
- t
ON OFF
Switch “ON” Time, t
ON
Figure 7
-
-
-
-
-
150
125
175
125
10
-
-
-
-
-
-
-
-
-
-
175
150
250
150
5
-
-
-
-
-
ns
ns
ns
ns
ns
Switch “OFF” Time, t
OFF
IH5142, IH5143
Switch “ON” Time, t
Figure 8, Note 2
ON
Switch “OFF” Time, t
OFF
Break-Before-Make,
t
- t
ON OFF
Switch “ON” Time, t
ON
Figure 7
-
-
-
-
-
200
125
175
125
10
-
-
-
-
-
-
-
-
-
-
300
150
250
150
5
-
-
-
-
-
ns
ns
ns
ns
ns
Switch “OFF” Time, t
OFF
Switch “ON” Time, t
Figure 2, Note 2
ON
Switch “OFF” Time, t
OFF
Break-Before-Make,
t
- t
ON OFF
Switch “ON” Time, t
ON
Figure 3, Note 2
Figure 8, Note 2
Figure 7
-
-
-
200
125
10
-
-
-
-
-
-
300
150
5
-
-
-
ns
ns
ns
Switch “OFF” Time, t
OFF
OFF
OFF
Break-Before-Make,
t
- t
ON OFF
IH5144, IH5145
Switch “ON” Time, t
ON
-
-
-
175
125
10
-
-
-
-
-
-
250
150
5
-
-
-
ns
ns
ns
Switch “OFF” Time, t
Break-Before-Make,
t
- t
ON OFF
Switch “ON” Time, t
ON
-
-
200
125
-
-
-
-
300
150
-
-
ns
ns
Switch “OFF” Time, t
NOTES:
1. Switching times are measured at 90% points.
2. Typical values are for design aid only, not guaranteed and not subject to production testing.
13-6
IH5140 thru IH5145
Typical Performance Curves
90
100
o
T
= 25 C IH5141 DATA
A
IH5141 DATA
80
70
90
80
60
50
40
30
20
±5V, +5V SUPPLIES
60
50
±10V, +5V SUPPLIES
±15V, +5V SUPPLIES
o
125 C
40
o
25 C
o
30
20
-55 C
+10 +8
+6
+4
+2
0
-2
-4
-6
-8
-10
+10 +8
+6
+4
+2
0
-2
-4
-6
-8
-10
ANALOG SIGNAL VOLTAGE (V)
ANALOG SIGNAL VOLTAGE (V)
FIGURE 1. r
-120
vs TEMPERATURE AT ±15V, +5V SUPPLIES
FIGURE 2. r
vs POWER SUPPLIES
DS(ON)
DS(ON)
COAX TO SCOPE
V
- 10V
ANALOG P-P
V
OUT
AT FREQUENCY
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
51Ω
-100
-80
51Ω
-15V
-60
-40
-20
+5V
+15V
C = 1µF
0
SOCKET ON COPPER GROUND PLANE JIG
100
1K
10K
100K
1M
10M
FREQUENCY (Hz)
FIGURE 3A.
FIGURE 3B.
FIGURE 3. “OFF” ISOLATION vs FREQUENCY
2.8
2.6
2.4
2.2
2.0
1
2
3
4
5
6
7
8
16
15
14
13
1.8
-15V
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
I+ SUPPLY
τ
12 +5V
+3V
0V
+15V
11
10
9
I- SUPPLY
ρ
+10V
100Ω
I
ρ = 400ns
GND
I
< 0.05mA FROM 1µs to DC
L
1
10
100
1000
τ - PERIOD OF PULSE REPETITION RATE (µs)
FIGURE 4A.
FIGURE 4B.
FIGURE 4. POWER SUPPLY CURRENTS vs LOGIC STROBE RATE
13-7
IH5140 thru IH5145
Typical Performance Curves (Continued)
NC CHANNEL PINS (3, 4)
V
INJECT
+3V
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
+10
+5
0
+100
V
A
0.01µF
0V
V
A
4µs
-15V
0.01µF
IH5143
+5V
-5
+15V
-10
-100
NC CHANNEL PINS (1, 16)
+V
INJECT
+V
0mV
0mV
INJECT
-V
INJECT
-10
-5
0
+5 +10
-V
ANALOG SIGNAL VOLTAGE (V)
INJECT
FIGURE 5A.
FIGURE 5B.
FIGURE 5. CHARGE INJECTION vs ANALOG SIGNAL
V
OUT
(OFF CHANNEL)
COAX
TO
SCOPE
-120
-100
-80
1
16
15
51Ω
2
3
4
5
6
7
8
51Ω
C
C
14
13
12
11
10
9
-15V
+5V
-60
C
C
+15V
-40
+5V
(ON CHANNEL)
10V
P-P
-20
AT FREQUENCY
= V
1kΩ
C = 1µF
ANALOG
0
100
COPPER GROUND
PLANE JIG
1K
10K
100M
1M
10M
FREQUENCY (Hz)
FIGURE 6A.
FIGURE 6B.
FIGURE 6. CHANNEL TO CHANNEL CROSS COUPLING REJECTION vs FREQUENCY
Test Circuits and Waveforms
V
A
OUT
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
±10V
10pF
1kΩ
-15V
+3V
IH5141
0V
TTL INPUT
+5V
+15V
V
B
OUT
±10V
10pF
1kΩ
FIGURE 7. IH5141 t
ON
AND t
(3V DIGITAL INPUT)
OFF
13-8
IH5140 thru IH5145
Test Circuits and Waveforms (Continued)
t
ON
t
OFF
V
A
OUT
1
2
3
4
5
6
7
8
16
TTL
INPUT
+15V
+15V
+10V
-15V
V
15
14
13
12
11
10
9
OUT
0V
10pF
1kΩ
+10V
+15V
0V
1N914
IH5141
0V
0V
LOGIC INPUT
TTL
INPUT
+15V
0V
V
B
OUT
-10V
V
OUT
-10V
10pF
1kΩ
t
ON
t
OFF
NOTE: Switching times are measured at 90% points.
FIGURE 8. IH5141 t
ON
AND t
OFF
(15V DIGITAL INPUT)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
+10V
t
t
OFF
ON
-15V
10pF
10pF
1kΩ
+10V
-10V
-10V
+15V
0V
90%
IH5143
V
A OR B
OUT
+15V
-10V
0V
10%
TTL INPUT
V
B
OUT
+15V
2
T L INPUT
+10V
1kΩ
FIGURE 9A.
FIGURE 9B.
FIGURE 9. IH5143 t
ON
AND t
OFF
(15V DIGITAL INPUT)
V
A
OUT
1
2
3
4
5
6
7
8
16
+10V
-15V
15
14
13
12
11
10
9
10pF
1kΩ
+3V
+10V
IH5143
0V
TTL INPUT
+5V
+15V
V
B
OUT
+10V
10pF
1kΩ
FIGURE 10. IH5143 t
AND t
(3V DIGITAL INPUT)
ON
OFF
13-9
IH5140 thru IH5145
Typical Applications
ANALOG IN
To maximize switching speed on the IH5140 family, TTL open
collector logic (15V with a 1kΩ or less collector resistor)
D
S
D
S
Q1
G
Q2
G
B
SUBSTRATE
D
±15V FROM
DRIVERS
±15V FROM
DRIVERS
should be used. This configuration will result in (SPST) t
ON
and t
OFF
times of 80ns and 50ns, for signals between -10V
B
G
and +10V. The SPDT and DPST switches are approximately
Q3
30ns slower in both t and t with the same drive configu-
S
ON OFF
-15V
ration. 15V CMOS logic levels can be used (0V to +15V), but
propagation delays in the CMOS logic will slow down the
switching (typical 50ns → 100ns delays).
“BODY PULLER” FET
ANALOG OUT
FIGURE 12.
When driving the IH5140 Family from either +5V TTL or
CMOS logic, switching times run 20ns slower than if they
were driven from +15V logic levels. Thus t
is about 105ns,
Current will flow from -10V analog voltage through the drain
to body junction of Q1, then through the drain to body junc-
tion of Q3 to GND. This means that there is 10V across two
forward-biased silicon diodes and current will go to whatever
value the input signal source is capable of supplying. If the
analog input signal is derived from the same supplies as the
switch this fault condition cannot occur. Turning off the
supplies would turn off the analog signal at the same time.
ON
and t
75ns for SPST switches, and 135ns and 105ns
) for SPDT or DPST switches. The low level drive
OFF
(t , t
ON OFF
can be made as fast as the high level drive if ±5V strobe lev-
els are used instead of the usual 0V → +3.0V drive. Pin 13 is
taken to -5V instead of the usual GND and strobe input is
taken from +5V to -5V levels as shown in Figure 11.
ANALOG
OUT
ANALOG IN
(CHANNEL A)
ANALOG IN = -10V
N
1
2
3
4
5
6
7
8
16
15
14 -15V
Q1
Q2
P
SUBSTRATE
13
+5V
-5V
N
N
IH5141
N
P
12
11
10
9
+5V
CMOS
LEVEL
INPUT
Q3
-5V
+15V
GND WHEN POWER
SUPPLIES ARE OFF
STROBE
ANALOG
OUT
ANALOG IN
(CHANNEL B)
GND WHEN POWER
SUPPLIES ARE OFF
FIGURE 13.
FIGURE 11.
The typical channel of the IH5140 family consists of both This fault situation can also be eliminated by placing a diode
P-Channel and N-channel MOSFETs. The N-channel in series with the negative supply line (pin 14) as shown in
MOSFET uses a “Body Puller” FET to drive the body to -15V Figure 14. Now when the power supplies are off and a nega-
(±15V supplies) to get good breakdown voltages when the tive input signal is present this diode is reverse biased and
switch is in the off state (see Figure 12). This “Body Puller” no current can flow.
FET also allows the N-Channel body to electrically float
when the switch is in the on state producing a fairly constant
OUT
A
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
IN
A
r
with different signal voltages. While this “Body
1N914
OR EQUIVALENT
DS(ON)
2
T L IN
A
Puller” FET improves switch performance, it can cause a
problem when analog input signals are present (negative
signals only) and power supplies are off. This fault condition
is shown in Figure 13.
-15V
IH5141
+5V
+15V
2
T L IN
B
OUT
IN
B
B
FIGURE 14.
13-10
IH5140 thru IH5145
Typical Switching Waveforms Scale: Vertical = 5V/Div., Horizontal = 100ns/Div.
o
o
FIGURE 15B. 25 C
FIGURE 15A. -55 C
o
FIGURE 15C. 125 C
NOTE: Corresponds to Figure 12
FIGURE 15. TTL OPEN COLLECTOR LOGIC DRIVE
o
FIGURE 16B. 25 C
o
FIGURE 16A. -55 C
13-11
IH5140 thru IH5145
Typical Switching Waveforms Scale: Vertical = 5V/Div., Horizontal = 100ns/Div. (Continued)
o
FIGURE 16C. 125 C
NOTE: Corresponds to Figure 13
FIGURE 16. TTL OPEN COLLECTOR LOGIC DRIVE
NOTE: Corresponds to Figure 14
NOTE: Corresponds to Figure 19
o
o
FIGURE 17. 25 C TTL OPEN COLLECTOR LOGIC DRIVE
FIGURE 18. 25 C TTL OPEN COLLECTOR LOGIC DRIVE
Typical Applications
+15V
+15V
7
8007
4
2
3
7
741HS
4
2
3
6
OUTPUT
6
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
ANALOG
INPUT
-15V
51Ω
-15V
-15V
10,000pF
POLYSTYRENE
LOGIC INPUT
+5V
+15V
+3V = > SAMPLE MODE
0V = > HOLD MODE
IH5143
FIGURE 19. FIGURE 19. IMPROVED SAMPLE AND HOLD USING IH5143
13-12
IH5140 thru IH5145
Typical Applications (Continued)
1
2
3
4
16
15
14
13
12
11
10
9
+V
ANALOG
2
T L LOGIC
STROBE
-15V
-V
ANALOG
5
6
7
8
EXAMPLE: If -V
= -10V
+5V
ANALOG
DC
then Ladder
Legs are switched between ±10V
and +V
ANALOG
= +10V
DC
+15V
,
DC
depending upon state of Logic Strobe.
2
T L LOGIC
STROBE
+V
ANALOG
2R
2R
IH5143
R
R
R
0V = > HOLD MODE
ETC.
ETC.
FIGURE 20. USING THE CMOS SWITCH TO DRIVE AN R/2R LADDER NETWORK (2 LEGS)
10,000pF
10,000pF
100kΩ
100kΩ
C
C
HI PASS
OUTPUT
BANDPASS
OUTPUT
-
-
-
100kΩ
8021
8021
8021
SIGNAL
INPUT
+
+
+
3M
3M
3M
LO PASS
OUTPUT
100kΩ
100kΩ
680kΩ
68kΩ
R
1kΩ
R
68kΩ
R
Constant gain, constant Q, variable frequency
filter which provides simultaneous Lowpass,
Bandpass, and Highpass outputs. With the
component values shown, center frequency will
be 235Hz and 23.5Hz for high and low logic
inputs respectively, Q = 100, and Gain = 100.
680kΩ
R
IH5143
1
f
= Center Frequency = -----------------
N
2π RC
3V
0V
LOGIC STROBE
FIGURE 21. DIGITALLY TUNED LOW POWER ACTIVE FILTER
13-13
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