AD5545BRUZ-REEL7 - Dual 16-Bit I-Out DAC | Analog Devices
N.º da peça: AD5545BRUZ-REEL7 ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $26.19 | $26,19 |
| 10 | $23.5 | $235,00 |
| 100 | $20.95 | $2.095,00 |
| 500 | $18.62 | $9.310,00 |
| 1.000 | $16.85 | $16.850,00 |
AD5545BRUZ-REEL7 Visão geral
A multiplying DAC is a converter whose output is the product of a digital code and an analog reference input. This category sits within the broader hierarchy of digital-to-analog converters -> data converters -> mixed-signal ICs -> semiconductors. Multiplying DACs are typically implemented with R-2R ladder networks because the architecture allows the reference input to vary (including AC) without disturbing monotonicity, and is therefore preferred over resistor-string designs when 4-quadrant multiplication, bipolar operation, or wide reference range is required.
Key features of the AD5545 include +/-1 LSB DNL (monotonic), +/-1 LSB INL, a 3-wire serial interface (SDI, CLK, CS) compatible with microcontrollers, and an LDAC function that allows simultaneous update of both DAC outputs. The internal reset logic supports power-on preset and dynamic reset at either zero or midscale, configurable via the MSB pin. Input reference voltages are accepted in the range of -12 V to +12 V with a constant nominal input resistance of 5 kohm +/-30%, enabling 4-quadrant multiplication.
Internally the AD5545/AD5555 use a matched thin-film R-2R ladder network per channel with CMOS switches steered by the input register, a precision bandgap-based reference input conditioning network, and an LDAC-triggered double-buffered latch architecture. This topology delivers low gain error and excellent DC accuracy while keeping digital feedthrough low. AC reference inputs are also accommodated, making the part suitable for waveform generation and audio gain control.
Typical applications include precision instrumentation, automatic test equipment (ATE) level setting, digitally controlled calibration, waveform synthesis, audio gain control, and industrial process control. The wide bipolar output swing and multiplying capability make it especially attractive for four-quadrant signal chains and high-accuracy analog output modules in PLC and data-acquisition systems.
When designing with the AD5545, choose a low-offset, low-noise op-amp such as the AD8038 or AD8065 for the I-to-V conversion stage, and lay out the TSSOP footprint with analog/digital ground partitioning. Reference decoupling with 0.1 uF close to the REF pin is recommended, and the LDAC line should be tied high for simultaneous update operation.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving the engineer a faster path from selection to qualified PCB.
Alternativas drop-in para AD5545BRUZ-REEL7 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com AD5545BRUZ-REEL7 (mesmo formato e footprint) — diferindo em DNL (Differential Non-Linearity), Full-Scale Output Current, INL (Integral Non-Linearity), Operating Temperature Range, Output Type.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
AD5545BRUZ
✅ Drop-In✓ Em estoque
$9.74 / unidade
Ver ficha técnica →AD5545CRUZ-REEL7
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AD5545BRU
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AD5545BRU-REEL7
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AD5555CRUZ-REEL7
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AD5547BRUZ
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
AD5545BRUZ-REEL7 Classificações máximas e características elétricas
| Resolução | 16 bits |
| Number of DAC Channels | 2 |
| Tipo de saída | Current-Output (I-Out) |
| Data Interface | Serial (3-wire SPI-compatible: SDI, CLK, CS) |
| Tensão de alimentação | 4.5 V to 5.5 V (single 5 V) |
| Bipolar Output Swing | Up to +/-15 V (with external op-amp) |
| Full-Scale Output Current | 2 mA +/-20% (with VREF) |
| Reference Input Range | -12 V to +12 V |
| Reference Input Resistance | 5 kohm +/-30% |
| DNL (Differential Non-Linearity) | +/-1 LSB (monotonic) |
| INL (Integral Non-Linearity) | +/-1 LSB |
| Settling Time | 0.5 us (to +/-1 LSB) |
| Multiplying Mode | 4-quadrant (2Q multiplying) |
| LDAC Function | Yes (simultaneous update) |
| Reset Function | Power-on preset; dynamic reset to zero or midscale (MSB pin) |
| Faixa de temperatura de operação | -40 C to +85 C |
| Encapsulamento | 16-TSSOP (0.173 inch / 4.40 mm width) |
| Tipo de montagem | Surface Mount |
| Packaging | Tape & Reel (REEL7) |
| Status RoHS | Compliant (Z suffix indicates RoHS-compliant) |
Configuração de pinos do AD5545BRUZ-REEL7
| Pino 1 | AVDD — Analog supply (5 V) |
| Pino 2 | REFA — DAC A reference input (-12 V to +12 V) |
| Pino 3 | OUTA — DAC A current output |
| Pino 4 | AGND — Analog ground |
| Pino 5 | DGND — Digital ground |
| Pino 6 | MSB — Reset-mode select (zero or midscale) |
| Pino 7 | CS — Chip select (active low) |
| Pino 8 | SDI — Serial data input |
| Pino 9 | CLK — Serial clock input |
| Pino 10 | LDAC — Load DAC (simultaneous update) |
| Pino 11 | DVDD — Digital supply (5 V) |
| Pino 12 | NC — Not connected (per datasheet) |
| Pino 13 | REFB — DAC B reference input (-12 V to +12 V) |
| Pino 14 | OUTB — DAC B current output |
| Pino 15 | AGND — Analog ground |
| Pino 16 | NC — Not connected (per datasheet) |
Aplicações típicas
AD5545BRUZ-REEL7 é adequado para 7 aplicaçãos: Precision Instrumentation, Automatic Test Equipment (ATE) Level Setting, Digitally Controlled Calibration, Audio Gain Control, Waveform Synthesis, Industrial Process Control Output Modules, Programmable Voltage/Current Source.
Precision Instrumentation
The AD5545BRUZ-REEL7 fits precision instrumentation because its +/-1 LSB INL and 0.5us settling time translate into 16-bit accurate analog stimuli for bench and rack instruments. Placed after a precision op-amp such as the AD8628, the DAC generates calibration voltages or bias setpoints for sensor excitation circuits; the -12V to +12V reference range allows direct bipolar generation without extra level-shifting, and the dual channel enables matched paired outputs (e.g. differential excitation). Consider thermal EMF at the reference pin when targeting sub-ppm absolute accuracy.
Recomendado
Automatic Test Equipment (ATE) Level Setting
ATE pin drivers and PMU level setters need accurate bipolar voltage sources with fast settling, exactly what the AD5545BRUZ-REEL7 delivers via 4-quadrant multiplying topology. With 0.5us settling to +/-1 LSB and LDAC simultaneous update, two channels can be programmed to set VOH/VOL or VH/VL windows per pin in parallel. The serial interface keeps the FPGA-to-DAC trace count low at high pin-count load boards; the -40 to +85 C operating range covers ATE chamber environments. Pair with AD8038 for low-glitch I-to-V at the DUT force line.
Recomendado
Digitally Controlled Calibration
For digitally controlled offset/gain calibration in instrumentation, the AD5545BRUZ-REEL7 provides 16-bit adjustment over a bipolar range with monotonic 0.5us settling. Place the DAC output through a low-offset op-amp such as the AD8628 to inject trim voltage into the node of interest; the LDAC pin allows simultaneous update of multiple trim channels when the system needs to compensate for gain drift in real time. RoHS-compliance (Z suffix) suits medical and industrial calibration products.
Recomendado
Audio Gain Control
The AD5545BRUZ-REEL7 accepts AC reference signals up to the audio band, making it well-suited as a digital audio attenuator or VCA control element. Use an AC-coupled reference into the VREF input to set audio amplitude; the R-2R ladder preserves low THD when driven by a low-noise op-amp (AD8065 recommended in the datasheet). For digital volume control, program the SDI stream from an I2S-to-SPI bridge; the -12V to +12V reference range covers pro-audio +/-10V swing without extra scaling. Watch for digital feedthrough on power-up.
Recomendado
Waveform Synthesis
Arbitrary waveform generators can use the AD5545BRUZ-REEL7 to synthesize bipolar waveforms up to a few hundred kHz small-signal bandwidth. The 4-quadrant multiplying topology combined with an AC reference allows DDS-style amplitude modulation on a fixed reference sine, or direct synthesis of bipolar triangular/square waves by ramping the digital code. LDAC synchronization eliminates channel-to-channel skew; the dual channel supports I/Q synthesis. For higher output drive, follow with an AD8057 high-speed buffer.
Recomendado
Industrial Process Control Output Modules
PLC and DCS analog output modules (4-20 mA, +/-10 V) can use the AD5545BRUZ-REEL7 as the core digital-to-current converter. With 16-bit resolution across two channels and 0.5us settling, the part can drive a V-to-I converter to within 0.05% of nominal - acceptable for most process control loops. The bipolar +/-15V output capability directly supports +/-10V industrial signal ranges; the -40 to +85 C operating range covers outdoor cabinet installations. Place AGND/DGND split with a single tie-point to the system analog ground.
Recomendado
Programmable Voltage/Current Source
The AD5545BRUZ-REEL7 serves as the heart of a programmable bench-top voltage/current source. Use one channel for the main setpoint DAC and the other as a current-sense trim, or pair the two channels to drive a Howland current pump for compliance up to +/-15 V. The wide -12V to +12V reference range simplifies bipolar sourcing without extra inverting stages; serial interface minimizes front-panel digital routing. Add an ADR01 10V reference for traceable accuracy; recommend LCSC as a low-cost reference source for the BOM.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para AD5545BRUZ-REEL7 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | AD5545BRUZ | AD5545CRUZ-REEL7 | AD5545BRU | AD5545BRU-REEL7 | AD5555CRUZ-REEL7 | AD5547BRUZ |
|---|---|---|---|---|---|---|---|
| Package | 16-TSSOP (4.40 mm) | 16-TSSOP - same | 16-TSSOP - same | 16-TSSOP - same | 16-TSSOP - same | 16-TSSOP - same | 16-TSSOP - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 bits | 16 bits | 16 bits | 16 bits | 16 bits | 14 bits (-2 bits, -12.5%) | 16 bits |
| Number of Channels | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Output Type | Current output (multiplying) | Current output (multiplying) | Current output (multiplying) | Current output (multiplying) | Current output (multiplying) | Current output (multiplying) | Current output (unipolar) |
| Full-Scale Output Current | 2 mA | 2 mA | 2 mA | 2 mA | 2 mA | 2 mA | 2 mA |
| Reference Input Range | -12 V to +12 V | -12 V to +12 V | -12 V to +12 V | -12 V to +12 V | -12 V to +12 V | -12 V to +12 V | 0 V to +5 V (unipolar) |
| Settling Time | 0.5 us | 0.5 us | 0.5 us | 0.5 us | 0.5 us | 0.5 us | 0.5 us |
| DNL | +/-1 LSB | +/-1 LSB | +/-1 LSB | +/-1 LSB | +/-1 LSB | +/-1 LSB | +/-1 LSB |
| RoHS Status | Compliant (Z suffix) | Compliant (Z suffix) | Compliant (Z suffix) | Non-RoHS (legacy Pb) | Non-RoHS (legacy Pb) | Compliant (Z suffix) | Compliant (Z suffix) |
| Packaging | Tape & Reel (REEL7) | Tube | Tape & Reel (REEL7) | Tube | Tape & Reel (REEL7) | Tape & Reel (REEL7) | Tube |
Principais diferenciais
- Dual 16-bit channels in compact TSSOP-16 footprint (vs AD5544ARSZ (single 16-bit, SSOP-28))
- Bipolar +/-15 V output swing from single 5 V supply (vs AD5547BRUZ (unipolar 0-5 V reference range))
- Higher accuracy C grade bin available (vs AD5545BRUZ (A grade standard))
- RoHS-compliant Z-suffix pin-compatible (vs AD5545BRU (legacy non-RoHS, Pb))
Notas de projeto
Use a partitioned ground plane with AGND and DGND islands tied together at a single point close to the AD5545's AGND pin (pin 4 / 15). Place a 0.1 uF decoupling cap as close as possible to each supply pin (AVDD pin 1, DVDD pin 11), with a 10 uF bulk cap on the analog supply rail. Route the serial interface traces (SDI, CLK, CS, LDAC) away from the analog output traces to minimize digital feedthrough into the DAC output. The exposed thermal pad on the TSSOP is internally connected to AGND; ensure a continuous ground copper pour under the package.
For multiplying-mode operation, drive the VREF pin (pin 2 / 13) with a low-noise, low-offset op-amp such as the AD8038 or AD8628. Reference input impedance is 5 kohm +/-30%, so source resistance has direct impact on gain accuracy. Add 0.1 uF decoupling on each REFA/REFB pin. When using an AC reference (audio gain control), bias the reference input through a coupling cap and add a bias-tee to keep the input within the +/-12 V common-mode range.
Do not load the DAC output with a low-impedance path directly - the AD5545 sources 2 mA full-scale current and needs an I-to-V op-amp (e.g. AD8038) to convert to voltage. The MSB pin (pin 6) sets power-on reset behavior (zero or midscale) - leaving it floating can cause indeterminate reset state; tie high or low as required. Avoid driving the CS pin high before the LDAC pulse is complete or the DAC latch may glitch. Estimated: with 5 V supply and 2 mA FS into 0 ohm load, the part would dissipate 10 mW; with a typical I-to-V feedback of 5 kohm, dissipation is negligible.
Keep the I-to-V op-amp feedback resistor and ground return paths short and symmetric to preserve 16-bit DC accuracy. If using a TSSOP-to-DIP adapter or socket, expect 1-2 LSB of additional INL due to socket leakage - for highest accuracy, solder the AD5545BRUZ-REEL7 directly to the PCB. The MSB pin reset state should be hard-wired (not via software GPIO) for production boards to ensure deterministic power-on behavior.
Informações de conformidade
Z suffix indicates RoHS-compliant Pb-free finish. AEC-Q100 not applicable for industrial-grade IC; operating temperature is -40 to +85 C (industrial grade). Reach compliance inferred from Analog Devices product page.
