544UD1A integrated circuit is an operational amplifier featuring high input impedance, low input current, and the internal frequency compensation that ensures stable performance in all negative feedback modes , including those of integrators and voltage followers. It contains 32 integrated elements. Package: 3101.8-1 metal-glass (the USSR classification). Weight: less than 2 g.
Features of 544UD1A:
• Significantly low input current: 5 pA (typ)
• Low input noise current: 0.003 pA/Hz1/2
• High input resistance: 1012Ohm
• Voltage gain factor: 600 V/mV (typ)
• Unity gain frequency: 3 MHz (typ)
• Slew rate: 8 V/µs (typ)
• Broad scope of static and dynamic parameters
• Complete internal frequency compensation
• Stabile under high capacitive load (up to 10,000 pF)
• Easy-to-use
Application:
• Low currents-to-voltage conversion circuits
• Charge-sensitive amplifiers
• Integrators with long integration time
• Photodiode amplifiers
• Logarithmic amplifier
• High-resistivity buffer stages
• Standard circuits of general application
Electrical Characteristics
| Parameter | Т, °C | Value |
| Voltage gain factor, at least | +25 -60, +125 | 100,000 50,000 |
| Offset voltage, mV, less than | +25 -60, +125 | 15 19 |
| Offset voltage temperature ratio, µV/°С, less than | from +25 to +125 from +25 to -60 | 20 |
| Average input current, nA, less than | +25 +125 | 0.05 10 |
| Offset current, nA, less than | +25 | 0.02 |
| Input noise voltage in the 0.1 Hz to 10 Hz bandwidth, µVRMS, less than | +25 | 5 |
| Common mode rejection ratio, dB, at least | +25 | 80 |
| Supply voltage rejection ratio, µV/V, less than | +25 | 100 |
| Unity gain frequency, MHz, at least | +25, -60 +125 | 1 0.8 |
| Maximum slew rate, V/ µs, at least | +25 -60 +125 | 5 3 4 |
| Maximum output voltage, V, at least | +25 -60, +125 | 10 10 |
| Current consumption, mА, less than | +25 | 3.5 |
Maximum Permissible Operating Conditions:
Supply Voltage ±13.5 V and ±16.5 V
(may be operated in the ± 7 V to ±13.5 range)
Common-mode input voltage: less than |±10 В|
Operating temperature range: -60 °С, +125 °С
