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S HM-12
+5V Supply
–5V Supply
Analog Input
0 to +6
0 to –6
Volts
Volts
Volts
Volts
mA
Volts
°C
°C
+5V Supply –1
–5V Supply +1
±50
<Supply Voltages
+175
+300
Continuous Output Current
Digital Inputs
Junction Temperature
Lead Temperature
(10 seconds)
Output shorted to any supply will cause permanent damage.
Acquisition Time
(±0.1%, ±1V)
–40 to +85°C
–55 to +125°C
Hold Mode Settling
(±0.012%)
–40 to +85°C
–55 to +125°C
Hold Mode Settling
(±0.024%)
–40 to +85°C
–55 to +125°C
Hold Mode Settling
(±0.05%)
–40 to +85°C
–55 to +125°C
Hold Mode Settling
(±0.1%)
–40 to +85°C
–55 to +125°C
Slew Rate
Full Power Bandwidth
(±1V)
Small Signal Bandwidth
Output Noise, Hold Mode
Feedthrough
(2V Step)
Droop Rate
+25°C
–40 to +85°C
–55 to +125°C
—
—
10
10
20
20
ns
ns
—
—
10
10
—
—
ns
ns
—
—
7
7
18
18
ns
ns
—
—
6
6
15
15
ns
ns
—
—
5
5
12
12
—
—
—
—
—
ns
ns
V/μs
MHz
MHz
μVrms
dB
±220
35
50
—
—
±350
55
120
65
–80
—
—
—
±0.5
±2
±2.5
±1.5
±5
±10
mV/μs
mV/μs
mV/μs
Power Supply Range
+5V Supply
–5V Supply
Power Supply Current
+5V Supply
–5V Supply
Power Dissipation
Power Supply Rejection Ratio
+4.5
–5.5
+5
–5
+5.5
–4.5
Volts
Volts
+17
–17
170
40
+25
–25
250
60
+30
–30
300
—
mA
mA
mW
dB
Operating Temp. Range, Case
SHM-12S, SHM-12L
SHM-12LM
Storage Temperature Range
Package Type
SHM-12S
SHM-12L, SHM-12LM
–40
–55
–65
—
—
—
+85
+125
+150
°C
°C
°C
20-Pin plastic SOIC
20-Pin ceramc LCC
ABSOLUTE MAXIMUM RATINGS
PERFORMANCE (Cont.)
MIN.
TYP.
MAX.
UNITS
POWER SUPPLY REQUIREMENTS
ENVIRONMENTAL
TECHNICAL NOTES
The SHM-12 employs an open loop architecture to achieve its
superior high-speed characteristics. The first stage buffer
amplifier incorporates the sample-and-hold switch. This allows
for a fast acquisition time which is not limited by slew current
like the traditional Schottky diode bridge switch. The output
amplifier uses a closed loop voltage feedback design which
provides a low (0.3
, typical) output impedance. Gain and
linearity are not affected by heavy loads.
The design has been optimized to achieve the high accuracy
associated with fast transient responses over the military tem-
perature range. During the track-to-hold transient, the integral
nonlinearity is not affected and the pedestal remains constant
over the full ±1.5V input range.
An innovative circuit design ensures an extremely low droop rate.
An external hold capacitor can be added to the 15pF internal
hold capacitor to obtain a lower droop rate (the droop rate is pro-
portional to the inverse of the total hold capacitor value) without
increasing transient response times by more than a few ns. The
external hold capacitor should not exceed 100pF.
Footnotes:
Short circuit protection at ±50mA.
PARAMETERS
LIMITS
UNITS
OUTPUTS
Output Voltage Range
Output Current
Output Impedance
(dc)
Stable Capacitive Load
FUNCTIONAL SPECIFICATIONS
(Apply over the operating temperature range using a 100
resistive load, 10pF
capacitive load, ECL digital input levels, a 47pF external hold capacitor, and ±5V
nomnal supplies, unless otherwise specified.)
PERFORMANCE
Nonlinearity
(±1V)
+25°C
–40 to +85°C
–55 to +125°C
Sample Mode Offset
+25°C
–40 to +85°C
–55 to +125°C
Pedestal
+25°C
–40 to +85°C
–55 to +125°C
Gain
, +25°C
Gain Drift
(±1V)
–40 to +85°C
–55 to +125°C
Aperture Delay
–40 to +85°C
–55 to +125°C
Aperture Jitter
–40 to +85°C
–55 to +125°C
Harmonic Distortion
(±1V)
dc to 1MHz
dc to 10MHz
+25°C
–40 to +85°C
–55 to +125°C
Acquisition Time
(±0.012%, ±1V)
–40 to +85°C
–55 to +125°C
Acquisition Time
(±0.024%, ±1V)
–40 to +85°C
–55 to +125°C
Acquisition Time
(±0.05%, ±1V)
–40 to +85°C
–55 to +125°C
Input Voltage Range
Input Impedance
Digitals Inputs
(Balanced ECL)
Logic Levels
Logic 1
Logic 0
Logic Loading
Logic 1
Logic 0
–1.5
0.3
—
1
+1.5
—
Volts
M
–1.5
–2.5
—
—
+1.8
+0.8
Volts
Volts
—
—
+10
–30
+50
–150
μA
μA
–1.5
± 30
—
—
—
—
0.3
—
+1.5
—
1
50
Volts
mA
pF
—
—
—
±0.006
—
—
—
%
%
%
±0.024
±0.024
—
—
—
±12
—
—
—
±20
±30
mV
mV
mV
—
—
—
±3
—
—
—
±20
±20
—
mV
mV
mV
V/V
+0.98
+0.995
—
—
—
—
±20
±30
ppm/°C
ppm/°C
—
—
2
2
—
—
ns
ns
—
—
1
1
—
—
ps rms
ps rms
—
–75
—
dB
—
—
—
–62
—
—
—
–56
–54
dB
dB
dB
—
—
20
30
—
—
ns
ns
—
—
15
25
30
40
ns
ns
—
—
12
15
25
30
ns
ns
INPUTS
MIN.
TYP.
MAX.
UNITS
2