Datenblatt-pdf.com


CA5160 Schematic ( PDF Datasheet ) - Intersil Corporation

Teilenummer CA5160
Beschreibung 4MHz/ BiMOS Microprocessor Operational Amplifiers with MOSFET Input/CMOS Output
Hersteller Intersil Corporation
Logo Intersil Corporation Logo 




Gesamt 19 Seiten
CA5160 Datasheet, Funktion
PO®SSOIBBLSECODSALaU3EtB1aT4SES0T,PhICTReUAeOTt3DE1U3P0CRTODUCT
May 2003
CA5160
FN1924.7
4MHz, BiMOS Microprocessor Operational
Amplifier with MOSFET Input/CMOS
Output
CA5160 is an integrated circuit operational amplifier that
combines the advantage of both CMOS and bipolar
transistors on a monolithic chip. The CA5160 is a frequency
compensated version of the popular CA5130 series. It is
designed and guaranteed to operate in microprocessor or
logic systems that use +5V supplies.
Gate-protected P-Channel MOSFET (PMOS) transistors are
used in the input circuit to provide very high input impedance,
very low input current, and exceptional speed performance.
The use of PMOS field effect transistors in the input stage
results in common-mode input voltage capability down to 0.5V
below the negative supply terminal, an important attribute in
single supply applications.
A complementary symmetry MOS (CMOS) transistor pair,
capable of swinging the output voltage to within 10mV of
either supply voltage terminal (at very high values of load
impedance), is employed as the output circuit.
The CA5160 operates at supply voltages ranging from +5V to
+16V, or ±2.5V to ±8V when using split supplies, and have
terminals for adjustment of offset voltage for applications
requiring offset-null capability. Terminal provisions are also
made to permit strobing of the output stage. It has guaranteed
specifications for 5V operation over the full military
temperature range of -55oC to 125oC.
Part Number Information
PART NUMBER
(BRAND)
CA5160M96 (5160)
TEMP.
RANGE (oC) PACKAGE
PKG.
NO.
-55 to 125 8 Ld SOIC
M8.15
Tape and Reel
Features
• MOSFET Input Stage
- Very High ZI; 1.5T(1.5 x 1012) (Typ)
- Very Low II; at 15V Operation. . . . . . . . . . . . . 5pA (Typ)
at 5V Operation . . . . . . . . . . . . . 2pA (Typ)
• Common-Mode Input Voltage Range Includes Negative
Supply Rail; Input Terminals Can be Swung 0.5V Below
Negative Supply Rail
• CMOS Output Stage Permits Signal Swing to Either (or
Both) Supply Rails
• CA5160 Has Full Military Temperature Range Guaranteed
Specifications for V+ = 5V
• CA5160 is Guaranteed to Operate Down to 4.5V for AOL
• CA5160 is Guaranteed Up to ±7.5V
Applications
• Ground Referenced Single Supply Amplifiers
• Fast Sample-Hold Amplifiers
• Long Duration Timers/Monostables
• Ideal Interface With Digital CMOS
• High Input Impedance Wideband Amplifiers
• Voltage Followers (e.g., Follower for Single Supply D/A
Converter)
• Wien-Bridge Oscillators
• Voltage Controlled Oscillators
• Photo Diode Sensor Amplifiers
• 5V Logic Systems
• Microprocessor Interface
Pinout
CA5160 (SOIC)
TOP VIEW
OFFSET NULL 1
INV. INPUT 2
NON INV. INPUT 3
V- 4
-
+
8 STROBE
7 V+
6 OUTPUT
5 OFFSET NULL
NOTE: CA5160 devices have an on-chip frequency compensation
network. Supplementary phase-compensation or frequency roll-off (if
desired) can be connected externally between terminals 1 and 8.
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2003. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.






CA5160 Datasheet, Funktion
CA5160
Second Stage
Most of the voltage gain in the CA5160 is provided by the
second amplifier stage, consisting of bipolar transistor Q11
and its cascode-connected load resistance provided by
PMOS transistors Q3 and Q5. The source of bias potentials
for these PMOS transistors is described later. Miller Effect
compensation (roll off) is accomplished by means of the 30pF
capacitor and 2kresistor connected between the base and
collector of transistor Q11. These internal components provide
sufficient compensation for unity gain operation in most
applications. However, additional compensation, if desired,
may be used between Terminals 1 and 8.
Bias-Source Circuit
At total supply voltages, somewhat above 8.3V, resistor R2
and zener diode Z1 serve to establish a voltage of 8.3V across
the series connected circuit, consisting of resistor R1, diodes
D1 through D4, and PMOS transistor Q1. A tap at the junction
of resistor R1 and diode D4 provides a gate bias potential of
about 4.5V for PMOS transistors Q4 and Q5 with respect to
Terminal 7. A potential of about 2.2V is developed across
diode connected PMOS transistor Q1 with respect to Terminal
7 to provide gate bias for PMOS transistors Q2 and Q3. It
should be noted that Q1 is “mirror connected” to both Q2 and
Q3. Since transistors Q1, Q2 and Q3 are designed to be
identical, the approximately 200µA current in Q1 establishes a
similar current in Q2 and Q3 as constant current sources for
both the first and second amplifier stages, respectively.
At total supply voltages somewhat less than 8.3V, zener diode
Z1 becomes non-conductive and the potential, developed
across series connected R1, D1-D4, and Q1 varies directly
with variations in supply voltage. Consequently, the gate bias
for Q4, Q5 and Q2, Q3 varies in accordance with supply
voltage variations. This variation results in deterioration of the
power supply rejection ration (PSRR) at total supply voltages
below 8.3V. Operation at total supply voltages below about
4.5V results in seriously degraded performance.
Output Stage
The output stage consists of a drain loaded inverting
amplifier using CMOS transistors operating in the Class A
mode. When operating into very high resistance loads, the
output can be swung within millivolts of either supply rail.
Because the output stage is a drain loaded amplifier, its gain
is dependent upon the load impedance. The transfer
characteristics of the output stage for a load returned to the
negative supply rail are shown in Figure 20. Typical op-amp
loads are readily driven by the output stage. Because large
signal excursions are nonlinear, requiring feedback for good
waveform reproduction, transient delays may be
encountered. As a voltage follower, the amplifier can achieve
0.01% accuracy levels, including the negative supply rail.
Offset Nulling
Offset voltage nulling is usually accomplished with a 100,000
potentiometer connected across Terminals 1 and 5 and with the
potentiometer slider arm connected to Terminal 4. A fine offset
null adjustment usually can be affected with the slider arm
positioned in the mid point of the potentiometer’s total range.
Input Current Variation with Common Mode Input
Voltage
As shown in the Table of Electrical Specifications, the input
current for the CA5160 Series Op Amps is typically 5pA at
TA = 25oC when Terminals 2 and 3 are at a common-mode
potential of +7.5V with respect to negative supply Terminal 4.
Figure 1 contains data showing the variation of input current
as a function of common-mode input voltage at TA = 25oC.
These data show that circuit designers can advantageously
exploit these characteristics to design circuits which typically
require an input current of less than 1pA, provided the
common-mode input voltage does not exceed 2V. As
previously noted, the input current is essentially the result of
the leakage current through the gate-protection diodes in the
input circuit and, therefore, a function of the applied voltage.
Although the finite resistance of the glass terminal-to-case
insulator of the metal can package also contributes an
increment of leakage current, there are useful compensating
factors. Because the gate-protection network functions as if
it is connected to Terminal 4 potential, and the metal can
case of the CA5160 is also internally tied to Terminal 4, input
terminal 3 is essentially “guarded” from spurious leakage
currents.
10 TA = 25oC
7.5
V+ 15V
TO
5V
57
2
PA
CA5160
6
3
2.5
VIN 4 8
0V
TO
V- -10V
0
-1 0 1 2 3 4 5 6 7
INPUT CURRENT (pA)
FIGURE 1. CA5160 INPUT CURRENT vs COMMON MODE
VOLTAGE
Input Current Variation with Temperature
The input current of the CA5160 series circuits is typically
5pA at 25oC. The major portion of this input current is due to
leakage current through the gate protective diodes in the
input circuit. As with any semiconductor-junction device,
including op amps with a junction-FET input stage, the
6

6 Page









CA5160 pdf, datenblatt
CA5160
+15V
T2
V
D1
T3
T1
VCO CONTROL VOLTAGE (VI)
(0V - 10V)
fo (SENSITIVITY = 1kHz/V)
10K 1M
0.01µF
R5
100K
R6
100K
100K
3
C1
500pF
2
+15V
D2
+15V
7
+
A1 MULTI-
VIBRATOR
CA5130
-
4
D3
R1
D4 182K
0.1
µF
6
2
EAVG = V T2/T1
R3
1M
3
C2
0.01µF
R2
10K
D5
7
-
A2 COM-
PARATOR
CA5160
+
4
5
1
R7
100K
D1 - D5 = 1N914
R4 3K
FIGURE 10. VOLTAGE CONTROLLED OSCILLATOR
6
0.01µF
300V
100V
30V
10V
SW1A 3V
INPUT 1V
300mV
100mV
30mV
10mV
100M
1.02
M
300V
100V
30V
10V
9.9
k
3V SW1B
1V 22M
300mV
100mV
30mV
10mV
BATTERY
TEST
OFF
ON
3 POSITION
SLIDE SWITCH
3
0.001
µF
2
+9V
BATTERY
7
+
CA5160
-
5
1
4
6
300V
100V
30V
100k
10V
SW1C 3V
9.1k
ZERO
ADJUST
10k
1V
300mV
100mV
30mV
10mV
BATTERY
3V CAL.
2.7k500
820200
1V CAL.
9k
900
100
300V
100V
30V
10V
3V
1V
300mV
100mV
30mV
10mV
+ 500
µF
-
M
0-1mA
SW1D
FIGURE 11. CA5160A HIGH INPUT RESISTANCE DC VOLTMETER
12

12 Page





SeitenGesamt 19 Seiten
PDF Download[ CA5160 Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
CA51604MHz/ BiMOS Microprocessor Operational Amplifiers with MOSFET Input/CMOS OutputIntersil Corporation
Intersil Corporation
CA5160E4MHz/ BiMOS Microprocessor Operational Amplifiers with MOSFET Input/CMOS OutputIntersil Corporation
Intersil Corporation
CA5160M964MHz/ BiMOS Microprocessor Operational Amplifiers with MOSFET Input/CMOS OutputIntersil Corporation
Intersil Corporation

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche