| Pins | 20 |
| DAC type | CMOS dual 8-bit buffered multiplying DAC |
| Resolution | 8 bit |
CMOS двухканальный 8-разрядный мультиплицирующий ЦАП Analog Devices AD7528LRZ с внутренними регистрами-защёлками, обеспечивающий четырёхквадрантное умножение, точное согласование каналов и параллельный TTL/CMOS‑совместимый интерфейс в корпусе SOIC‑20 для работы от однополярных и двуполярных источников питания.
| Pins | 20 |
| DAC type | CMOS dual 8-bit buffered multiplying DAC |
| Resolution | 8 bit |
| Output type | Current output (requires external amplifier for voltage output) |
| Part number | AD7528LRZ |
| Architecture | R-2R ladder, current-steering switches |
| Manufacturer | Analog Devices, Inc. |
| Package type | 20-Lead SOIC (Wide) |
| Digital crosstalk | 30 nV·sec typ, 60 nV·sec typ (depending on VDD) |
| Power dissipation | 20 mW typ at VDD = +5 V to +15 V |
| Data hold time tDH | 0 ns min |
| Number of channels | 2 |
| Data setup time tDS | 90 ns min (VDD = +5 V), 40 ns min (VDD = +15 V) |
| Harmonic distortion | –85 dB typ, VIN = 6 V rms @ 1 kHz |
| Power supply current | IDD max 2 mA (all digital inputs VIL or VIH) |
| Write pulsewidth tWR | 100 ns min (VDD = +5 V), 80 ns min (VDD = +15 V) |
| Current settling time | 400 ns max (VDD = +5 V), 200 ns max (VDD = +15 V) to 1/2 LSB, RL = 100 Ω |
| Digital input current | ±1 µA max (TA = +25°C), ±10 µA max (TMIN to TMAX), VIN = 0 or VDD |
| Gain error adjustment | External resistors per Figures 4 and 5 |
| Reference voltage range | VREF A, VREF B to AGND: ±25 V (absolute maximum) |
| Resolution monotonicity | Guaranteed monotonic over full operating temperature range |
| DAC select hold time tAH | 0 ns min (VDD = +5 V), 15 ns min (VDD = +15 V) |
| Chip select hold time tCH | 0 ns min (VDD = +5 V), 15 ns min (VDD = +15 V) |
| DAC select setup time tAS | 100 ns min (VDD = +5 V), 80 ns min (VDD = +15 V) |
| Differential nonlinearity | ±1 LSB max |
| Storage temperature range | –65°C to +150°C |
| Chip select setup time tCS | 100 ns min (VDD = +5 V), 80 ns min (VDD = +15 V) |
| Analog supply voltage range | +5 V to +15 V |
| Gain error (AD7528LR grade) | ±1 LSB max (VDD = +5 V, TA = +25°C), ±1 LSB max (VDD = +15 V, TA = +25°C) |
| Power derating above +75°C | 6 mW/°C |
| Absolute maximum VDD to AGND | 0 V to +17 V |
| Channel-to-channel isolation | –77 dB typ at 100 kHz, VREF = 20 V p-p |
| Digital supply voltage range | +5 V to +15 V |
| Gain temperature coefficient | ±0.0035%/°C max (L, C, U versions) |
| Output leakage current OUT A | ±50 nA max (TA = +25°C), ±200 nA max (TMIN to TMAX, VDD = +15 V) |
| Output leakage current OUT B | ±50 nA max (TA = +25°C), ±200 nA max (TMIN to TMAX, VDD = +15 V) |
| Digital-to-analog glitch impulse | 160 nV·sec typ (VDD = +5 V), 440 nV·sec typ (VDD = +15 V), code 00000000 to 11111111 |
| Input resistance (VREF A, VREF B) | 8 kΩ min, 15 kΩ max, typ 11 kΩ; TC ≈ –300 ppm/°C |
| DC supply rejection (ΔGain/ΔVDD) | 0.02% per % max (VDD = +5 V), 0.02% per % max (VDD = +15 V) |
| Digital input capacitance DB0–DB7 | 10 pF max |
| VREF A/VREF B input resistance match | ±1% max |
| AC feedthrough (VREF to OUT, 100 kHz) | –70 dB typ, –65 dB max, VREF = 20 V p-p |
| Absolute maximum VREF A, VREF B to AGND | ±25 V |
| Absolute maximum VRFB A, VRFB B to AGND | ±25 V |
| Relative accuracy (endpoint nonlinearity) | ±1/2 LSB max (L, C, U versions, including AD7528LR) |
| Digital input low voltage VIL (VDD = +5 V) | 0.8 V max |
| Digital input high voltage VIH (VDD = +5 V) | 2.4 V min |
| Digital input low voltage VIL (VDD = +15 V) | 1.5 V max |
| Digital input high voltage VIH (VDD = +15 V) | 13.5 V min |
| Operating temperature range (AD7528LR grade) | –40°C to +85°C |
| Digital input capacitance WR, CS, DAC A/DAC B | 15 pF max |
| Output capacitance (OUT A, OUT B, code 00000000) | 50 pF max |
| Output capacitance (OUT A, OUT B, code 11111111) | 120 pF max |
| Maximum power dissipation (any package, TA ≤ +75°C) | 450 mW |
| Absolute maximum analog output pins (OUT A, OUT B) to AGND | –0.3 V to VDD + 0.3 V |
| Propagation delay (digital input to 90% of final analog current) | 270 ns max (VDD = +5 V), 100 ns max (VDD = +15 V), RL = 100 Ω, CEXT = 13 pF |
Предлагаем ЦАП Analog Devices AD7528LRZ, двухканальный 8-разрядный мультиплицирующий на выгодных условиях с полной технической поддержкой. Проверим наличие, поможем подобрать аналог.
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