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SHM-14S Datasheet(PDF) 2 Page - List of Unclassifed Manufacturers |
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2 / 6 page SHM-14 ® ® INPUTS MIN. TYP. MAX. UNITS Input Voltage Range –2.5 — +2.5 Volts Input Impedance 0.3 1 — M Ω Digitals Inputs (Balanced ECL) Logic Levels Logic 1 –1.5 — +1.8 Volts Logic 0 –2.5 — +0.8 Volts Logic Loading Logic 1 — +10 +50 µA Logic 0 — –30 –150 µA Output Voltage Range –2.5 — +2.5 Volts Output Current • ± 30 — — mA Output Impedance (dc) — 0.3 1 Ω Stable Capacitive Load — — 50 pF Nonlinearity (±1V) +25°C — ±0.0012 — % –40 to +85°C — — ±0.002 % –55 to +125°C — — ±0.003 % Sample Mode Offset +25°C — ±12 — mV –40 to +85°C — — ±20 mV –55 to +125°C — — ±30 mV Pedestal +25°C — ±3 — mV –40 to +85°C — — ±20 mV –55 to +125°C — — ±20 mV Gain, +25°C +0.98 +0.995 — V/V Gain Drift (±1V) –40 to +85°C — — ±20 ppm/°C –55 to +125°C — — ±30 ppm/°C Aperture Delay –40 to +85°C — 2 — ns –55 to +125°C — 2 — ns Aperture Jitter –40 to +85°C — 1 — ps rms –55 to +125°C — 1 — ps rms Harmonic Distortion (±1V) dc to 1MHz — –72 — dB dc to 10MHz +25°C — –58 — dB –40 to +85°C — — –50 dB –55 to +125°C — — –48 dB Acquisition Time (±0.012%, ±2V) –40 to +85°C — 25 — ns –55 to +125°C — 35 — ns Acquisition Time (±0.024%, ±2V) –40 to +85°C — 20 35 ns –55 to +125°C — 25 40 ns Acquisition Time (±0.05%, ±2V) –40 to +85°C — 19 30 ns –55 to +125°C — 20 35 ns ABSOLUTE MAXIMUM RATINGS PARAMETERS LIMITS UNITS +5V Supply 0 to +6 Volts –5V Supply 0 to –6 Volts Analog Input +5V Supply –1 Volts –5V Supply +1 Volts Continuous Output Current ±50 mA Digital Inputs <Supply Voltages Volts Junction Temperature +175 °C Lead Temperature (10 seconds) +300 °C Output shorted to any supply will cause permanent damage. OUTPUTS PERFORMANCE FUNCTIONAL SPECIFICATIONS (Apply over the operating temperature range using a 100 Ω resistive load, 10pF capacitive load, ECL digital input levels, and ±5V nominal supplies, unless specified.) TECHNICAL NOTES The SHM-14 employs an open loop architecture in order to achieve its superior high-speed characteristics. The first stage buffer amplifier, which charges the hold capacitor, incorporates the sample-and-hold switch into its design. This technique 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 Ω, typical) output impedance. Gain and linearity are not affected by heavy loads. The design has been optimized to achieve the high accuracy associ- ated with fast transient responses over the full military temperature range. During the track-to-hold transient, the integral nonlinearity is not affected and the pedestal remains constant over the full ±2.5V input range. An external hold capacitor can be added to the 15pF internal hold capacitor to obtain a lower droop rate (the droop rate is propor- tional to the inverse of the total hold capacitor value) without increasing transient response times by more than few ns. Settling and acquisition times are typically increased by 5ns and 10ns respectively for 47pF and 100pF external hold capacitors. The external hold capacitor should not exceed 100pF. Acquisition Time (±0.1%, ±2V) –40 to +85°C — 10 16 ns –55 to +125°C — 10 19 ns Hold Mode Settling (±0.012%) –40 to +85°C — 12 — ns –55 to +125°C — 15 — ns Hold Mode Settling (±0.024%) –40 to +85°C — 7 18 ns –55 to +125°C — 7 18 ns Hold Mode Settling (±0.05%) –40 to +85°C — 6 16 ns –55 to +125°C — 6 16 ns Hold Mode Settling (±0.1%) –40 to +85°C — 5 12 ns –55 to +125°C — 5 12 ns Slew Rate ±300 ±430 — V/µs Full Power Bandwidth (±1V) 45 70 — MHz Small Signal Bandwidth 100 250 — MHz Output Noise, Hold Mode — 65 — µVrms Feedthrough (2V Step) — –80 — dB Droop Rate +25°C — ±2 ±6 mV/µs –40 to +85°C — ±5 ±15 mV/µs –55 to +125°C — ±10 ±30 mV/µs Power Supply Range +5V Supply +4.5 +5 +5.5 Volts –5V Supply –5.5 –5 –4.5 Volts Power Supply Current +5V Supply +17 +25 +30 mA –5V Supply –17 –25 –30 mA Power Dissipation 170 250 300 mW Power Supply Rejection Ratio 40 60 — dB Operating Temp. Range, Case SHM-14S, SHM-14L –40 — +85 °C SHM-14LM –55 — +125 °C Storage Temperature Range –65 — +150 °C Package Type SHM-14S 16-Pin plastic SOIC SHM-14L, SHM-14LM 20-Pin ceramic LCC Footnotes: • Short circuit protection at ±50mA. ENVIRONMENTAL POWER SUPPLY REQUIREMENTS PERFORMANCE (Cont.) MIN. TYP. MAX. UNITS 2 |
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