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PDF SHC298AM Data sheet ( Hoja de datos )
| Número de pieza | SHC298AM | |
| Descripción | Monolithic SAMPLE/HOLD AMPLIFIER | |
| Fabricantes | Burr-Brown Corporation | |
| Logotipo |  |
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® SHC298
SHC298A
Monolithic
SAMPLE/HOLD AMPLIFIER
FEATURES
q 12-BIT THROUGHPUT ACCURACY
q LESS THAN 10µs ACQUISITION TIME
q WIDEBAND NOISE LESS THAN 20µVrms
q RELIABLE MONOLITHIC CONSTRUCTION
q 1010Ω INPUT RESISTANCE
q TTL-CMOS-COMPATIBLE LOGIC INPUT
Offset Adjust
2
30kΩ
Analog 3
Input
Logic 8
Logic 7
Reference
A2 5 Output
A1
150Ω
6 Hold
Capacitor
C1
Mode Control (S/H) Input
DESCRIPTION
The SHC298 and SHC298A are high-performance
monolithic sample/hold amplifiers featuring high DC
accuracy with fast acquisition times and a low droop
rate. Dynamic performance and holding performance
can be optimized with proper selection of the external
holding capacitor. With a 1000pF holding capacitor,
12-bit accuracy can be achieved with a 6µs acquisition
time. Droop rates less than 5mV/min are possible with
a 1µF holding capacitor.
These sample/holds will operate over a wide supply
voltage ranging from ±5V to ±18V with very little
change in performance. A separate Offset Adjust pin
is used to adjust the offset in either the Sample on the
Hold modes. The fully differential logic inputs have
low input current, and are compatible with TTL, 5V
CMOS, and CMOS logic families.
The SHC298AM is available in a hermetically sealed
8-pin TO-99 package and is specified over a tempera-
ture range from –25°C to +85°C. The SHC298JP and
SHC298JU are 8-pin plastic DIP and SOIC packaged
parts specified over 0°C to +70°C.
The SHC298AJP, specified over 0°C to +70°C, is
available in an 8-pin plastic DIP. The SHC298A grade
features improved gain and offset error, improved drift
over temperature, and faster acquisition time.
The SHC298 family is a price-performance bargain. It
is well suited for use with several 12-bit A/D convert-
ers in data acquisition systems, data distribution
systems, and analog delay circuits.
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1977 Burr-Brown Corporation
PDS-373E
Printed in U.S.A. August, 1996
1 page  
TYPICAL PERFORMANCE CURVES (CONT)
At TJ = +25°C, ±15V supplies, 1000pF holding capacitor, –11.5V ≤ VIN ≤ +11.5, RL = 10kΩ, Logic Reference Voltage = 0V, and Logic Voltage = 2.5 V, unless
otherwise noted.
DYNAMIC SAMPLING ERROR
100
+VCC = –VCC = 15V
TJ = 25°C
10
Hold Capacitor
1000pF
0.01µF
1
0.1
0.01
0.1
0.1µF
1µF
3000pF
1 10 100
Input Slew Rate (V/ms)
1000
0.3
TJ = 25°C
0.2 RL = 10kΩ
Sample Mode
0.1
GAIN ERROR
0
–0.1
Slope ≈ 0.0007%
–0.2
–0.3
–15
–10
–5 0
5
Output Voltage (V)
10 15
CHARGE OFFSET
1.6
1.2
CH = 0.01µF
TJ = 25°C
0.8
0.4
TJ = –55°C
0
–0.4
–0.8
TJ = 25°C
TJ = 125°C
–1.2
–1.6
–15
–10
–5 0
5
Input Voltage (V)
10
15
POWER SUPPLY REJECTION
160
140
TJ = 25°C
+VCC = –VCC = 15V
120 VOUT = 0V
100
80 Positive Supply
60 Negative Supply
40
20
0
100
1k 10k 100k
Frequency (Hz)
1M
25
20
15
10
5
0
–5
–10
–15
–50
–25
INPUT BIAS CURRENT
–0 25 50 75 100 125 150
Junction Temperature (°C)
FEEDTHROUGH REJECTION RATIO
130
120
CH ≥ 0.1µF
110
+VCC = –VCC = 15V
VIN = 10Vp-p
TJ = 25°C
100 CH = 0.01µF
90
CH = 1000pF
80
70
60
50
10
100
1k
10k
100k
1M
Frequency (Hz)
®
5 SHC298/298A
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet SHC298AM.PDF ] | |
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