AD5675R

Part: AD5675R — Analog Devices (16-bit; AD5671R is the 12-bit variant)

Type: Octal 16-Bit Buffered Voltage Output DAC with Internal Reference, I²C Interface

Description: Octal 16-bit nanoDAC+ with a 2.5 V, 2 ppm/°C internal reference, 2.7–5.5 V supply, 400 kHz I²C interface, and a selectable full-scale output of 2.5 V (gain = 1) or 5 V (gain = 2).

Operating Conditions:

• Supply voltage: VDD 2.7–5.5 V (gain = 2 requires VDD ≥ VREF + 1.5 V); VLOGIC 1.62–5.5 V
• Operating temperature: -40 to +125 °C
• Output voltage range: 0 to 2.5 V (gain = 1) or 0 to 5 V (gain = 2)
• Resistive load: 1 kΩ minimum (specified with RL = 2 kΩ, CL = 200 pF)

Absolute Maximum Ratings:

• VDD to GND: -0.3 V to +7 V
• VLOGIC to GND: -0.3 V to +7 V
• VOUTx and VREFOUT to GND: -0.3 V to VDD + 0.3 V
• Digital input voltage to GND: -0.3 V to VLOGIC + 0.3 V
• Junction temperature: 125 °C
• Storage temperature: -65 to +150 °C
• Reflow soldering peak temperature (Pb-free): 260 °C

Key Specs:

• Resolution: 16 bits
• INL: ±3 LSB max (B grade); ±8 LSB max (A grade)
• DNL: ±1 LSB max
• Total unadjusted error: ±0.14% of FSR max, gain = 2 (B grade)
• Offset error: ±1.5 mV max, gain = 2 (B grade)
• Gain error: ±0.06% of FSR max, gain = 2 (B grade)
• Internal reference: 2.5 V (2.4975–2.5025 V); temperature coefficient 2 ppm/°C typ, 5 ppm/°C max (B grade, TSSOP)
• Output current drive: 15 mA max; short-circuit current 40 mA typ
• Power-up time: 2.5 μs typ from power-down (VDD = 5 V)
• Output voltage noise: 13 μV p-p (0.1–10 Hz) for the reference
• IDD (normal mode, internal reference on): 1.8 mA typ, 2.1 mA max
• Power-down current: 1 μA typ

Features:

• Integrated 2.5 V reference, enabled by default
• User-selectable gain of 1 or 2 (GAIN pin/bit)
• 1.8 V logic compatibility
• 400 kHz I²C-compatible serial interface
• Power-on reset with RSTSEL pin selecting zero-scale or midscale at power-up
• Power-down mode
• Guaranteed monotonic by design
• Hardware LDAC and RESET pins, plus software reset

Applications:

• Optical transceivers
• Base station power amplifiers
• Process control (PLC input/output cards)
• Industrial automation
• Data acquisition systems

Package:

• 20-lead TSSOP
• 20-lead LFCSP

Optical transceivers Base station power amplifiers Process control (PLC input/output cards) Industrial automation Data acquisition systems

Figure 4. TSSOP Pin Configuration

Figure 5. LFCSP Pin Configuration

VDD = 2.7 V to 5.5 V, RL = 2 kΩ to GND, CL = 200 pF to GND, 1.62 V ≤ VLOGIC ≤ 5.5 V, all specifications TA = -40°C to +125°C, unless otherwise noted.

Thermal performance is directly linked to printed circuit board (PCB) design and operating environment. Careful attention to PCB thermal design is required.