PKD01AY/883C Analog Devices Inc, PKD01AY/883C Datasheet

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PKD01AY/883C

Manufacturer Part Number
PKD01AY/883C
Description
Manufacturer
Analog Devices Inc
Datasheet

Specifications of PKD01AY/883C

Power Supply Requirement
Dual
Single Supply Voltage (typ)
Not RequiredV
Single Supply Voltage (min)
Not RequiredV
Single Supply Voltage (max)
Not RequiredV
Mounting
Through Hole
Pin Count
14
Lead Free Status / RoHS Status
Not Compliant
a
GENERAL DESCRIPTION
The PKD01 tracks an analog input signal until a maximum
amplitude is reached. The maximum value is then retained as a
peak voltage on a hold capacitor. Being a monolithic circuit, the
PKD01 offers significant performance and package density
advantages over hybrid modules and discrete designs without
sacrificing system versatility. The matching characteristics
attained in a monolithic circuit provide inherent advantages
when charge injection and droop rate error reduction are
primary goals.
Innovative design techniques maximize the advantages of mono-
lithic technology. Transconductance (g
over conventional voltage amplifier circuit building blocks. The
g
acquisition time and maximize circuit accuracy. Their outputs
are easily switched by low glitch current steering circuits. The
steered outputs are clamped to reduce charge injection errors
upon entering the hold mode or exiting the reset mode. The inher-
ently low zero-scale error is further reduced by active Zener-Zap
trimming to optimize overall accuracy.
m
amplifiers simplify internal frequency compensation, minimize
m
) amplifiers were chosen
The output buffer amplifier features an FET input stage to
reduce droop rate error during lengthy peak hold periods. A bias
current cancellation circuit minimizes droop error at high ambi-
ent temperatures.
Through the DET control pin, new peaks may either be detected
or ignored. Detected peaks are presented as positive output
levels. Positive or negative peaks may be detected without
additional active circuits, since Amplifier A can operate as an
inverting or noninverting gain stage.
An uncommitted comparator provides many application options.
Status indication and logic shaping/shifting are typical examples.
LOGIC
GND
DET
RST
–IN
+IN
–IN
+IN
RST
0
0
1
1
DET
with Reset-and-Hold Mode
0
1
1
0
+IN
Monolithic Peak Detector
FUNCTIONAL BLOCK DIAGRAM
OPERATIONAL MODE
PEAK DETECT
PEAK HOLD
RESET
INDETERMINATE
+
+
A
B
–IN
GATED
GATED
"g
"g
AMP
AMP
m
m
CMP
+
"
"
D
1
SWITCHES SHOWN FOR:
RST = “0,” DET = “0”
OUTPUT
C
H
OUTPUT
BUFFER
V–
+
PKD01
C
V+
PKD01
V–
OUTPUT

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PKD01AY/883C Summary of contents

Page 1

GENERAL DESCRIPTION The PKD01 tracks an analog input signal until a maximum amplitude is reached. The maximum value is then retained as a peak voltage on a hold capacitor. Being a monolithic circuit, the PKD01 offers significant performance and ...

Page 2

PKD01–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Parameter Symbol Conditions g AMPLIFIERS Zero-Scale Error V ZS Input Offset Voltage V OS Input Bias Current I B Input Offset Current I OS Voltage Gain A V Open-Loop Bandwidth BW Common-Mode Rejection Ratio ...

Page 3

ELECTRICAL CHARACTERISTICS Parameter “g ” AMPLIFIERS Zero-Scale Error Input Offset Voltage 1 Average Input Offset Drift Input Bias Current Input Offset Current Voltage Gain Common-Mode Rejection Ratio Power Supply Rejection Ratio 1 Input Voltage Range Slew Rate ...

Page 4

PKD01 1, 2 ABSOLUTE MAXIMUM RATINGS Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 5

WAFER TEST LIMITS (@ Parameter “g ” AMPLIFIERS Zero-Scale Error Input Offset Voltage Input Bias Current Input Offset Current Voltage Gain Common-Mode Rejection Ratio Power Supply Rejection Ratio 1 Input Voltage Range Feedthrough Error ...

Page 6

PKD01–Typical Performance Characteristics INPUT + RANGE = V+ – +125 –55 C +25 C –2 +125 C –6 –10 V– SUPPLY –14 – SUPPLY VOLTAGE ...

Page 7

ERROR 6 2mV ERROR 4 20mV ERROR 2 0 100 1k 10k 100k 1M FREQUENCY – 100 TIME – 20 s/DIV 100 ...

Page 8

PKD01 100 – 100 1k 10k 100k 1M 10M FREQUENCY – ...

Page 9

V+ FOR IN – +125 –55 C –2 +25 C +125 C –6 –10 V– –14 – SUPPLY VOLTAGE +V AND –V – V ...

Page 10

PKD01 +125 –55 C –2 +25 C –6 +125 C –10 V– –14 – SUPPLY VOLTAGE +V AND –V – V 1.0 0.8 +125 C ...

Page 11

THEORY OF OPERATION The typical peak detector uses voltage amplifiers and a diode or an emitter follower to charge the hold capacitor, C ionally (see Figure 1). The output impedance of A plus D dynamic impedance make up ...

Page 12

PKD01 APPLICATIONS INFORMATION Optional Offset Voltage Adjustment Offset voltage is the primary zero scale error component since a variable voltage clamp limits voltage excursions at D and reduces charge injection. The PKD01 circuit gain and opera- tional mode (positive or ...

Page 13

PEAK HOLD CAPACITOR RECOMMENDATIONS The hold capacitor (C ) serves as the peak memory element H and compensating capacitor. Stable operation requires a mini- mum value of 1000 pF. Larger capacitors may be used to lower droop rate errors, but ...

Page 14

PKD01 I 1 DET OR RST CURRENT TO CONTROL MODES Typical Circuit Configurations INPUT OUTPUT TIME – 50 s/DIV INPUT OUTPUT TIME – 50 s/DIV +18V DIGITAL Q 3 GROUND V– DET/RST ...

Page 15

INPUT OUTPUT TIME – 50 s/DIV INPUT OUTPUT TIME – 50 s/DIV INPUT C PKD01 B R4 RESET VOLTAGE 1000pF DET/RST 20k 10k 1% 1% +2V INPUT 0V (GAIN = –2) –5V 8.2k 30.1k ...

Page 16

PKD01 POS/NEG PEAK DETECTOR R INPUT BIT PORT PROCESSOR 0 BIT PORT PKD01 V + POSITIVE ...

Page 17

V IN –15V +15V SW-201 A1 +15V DET/RST AMPLITUDE SELECTION LOGIC CH1 CH2 CH3 CH4 RAMP MUX-08 AMPLITUDE CH5 CH6 CH7 ...

Page 18

PKD01 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 14-Lead Plastic DIP (PDIP) (N-14) 0.795 (20.19) 0.725 (18.42 0.280 (7.11) 0.240 (6.10 0.325 (8.25) PIN 1 0.300 (7.62) 0.100 (2.54) 0.060 (1.52) BSC 0.015 (0.38) 0.210 ...

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