MAX1070ETC+T - 1.5Msps 10-Bit True-Diff ADC | Maxim Integrated
N.º de pieza: MAX1070ETC+T ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $6.42 | $6,42 |
| 10 | $5.78 | $57,80 |
| 100 | $5.14 | $514,00 |
| 500 | $4.61 | $2.305,00 |
| 1.000 | $4.1 | $4.100,00 |
MAX1070ETC+T Descripción general
An ADC (Analog-to-Digital Converter) is a data-conversion integrated circuit that samples continuous analog signals and translates them into discrete binary codes for digital processing. Within the broader semiconductor taxonomy, the MAX1070 sits in the hierarchy: ADC -> data converter -> mixed-signal IC -> semiconductor. The MAX1070 family uses a successive-approximation-register (SAR) architecture with an integrated track/hold amplifier, an internal bandgap reference, and a high-speed serial interface, achieving up to 1.5Msps throughput while drawing only milliwatts of power. This makes it a member of the precision-converter category targeting low-power, space-constrained applications.
Key features include a maximum sampling rate of 1.5Msps, true-differential analog inputs for superior common-mode noise rejection, an internal +2.5V reference (with external-reference option), a low-voltage SPITM/QSPITM/MICROWIRE-compatible serial interface, and an external shutdown input that reduces supply current to microampere levels. The device also supports bipolar analog input ranges when driven differentially around the common-mode voltage, and operates over the full -40C to +85C industrial temperature range.
The MAX1070 is built on a BiCMOS process that combines low-noise CMOS analog signal paths with high-speed bipolar switching for the SAR logic and serial interface. The track/hold amplifier supports input bandwidths well above Nyquist for the 1.5Msps rate, and the differential input stage rejects common-mode noise from motors, switching power supplies, and long PCB traces.
Typical applications include portable instrumentation, pen digitizers and tablets, battery-powered data loggers, isolated industrial sensor front-ends, and high-speed process-control loops. The wide input common-mode range allows direct connection to bridge sensors, thermocouple amplifiers, and current-sense amplifiers without additional signal conditioning.
When designing with this device, provide a clean analog ground plane and decouple AVDD and DVDD with separate 0.1uF and 10uF ceramic capacitors placed as close as possible to the supply pins. The serial interface timing budget must respect the tACQ and tCONV specifications referenced in the manufacturer datasheet to avoid conversion errors at full speed.
This page synthesizes distributor pricing, drop-in same-package alternatives, and application guidance for engineers selecting a 10-bit 1.5Msps differential ADC in a 12-pin TQFN.
Alternativas directas para MAX1070ETC+T — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con MAX1070ETC+T (mismo factor de forma y huella) — difiere en Package, Number of Channels, Data Interface, Architecture, Resolution.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MAX1070CTC+
✅ Sustitución directa✓ En stock
$5.18 / unidad
Ver hoja de datos →MAX1070ETC+
✅ Sustitución directa✓ En stock
$0.85 / unidad
Ver hoja de datos →MAX1070CTC+T
✅ Sustitución directa✓ En stock
$4.78 / unidad
Ver hoja de datos →MAX1070ETC+T Valores máximos y características eléctricas
| Resolución | 10 bits |
| Number of Channels | 1 |
| Frecuencia de muestreo | 1.5 Msps (max) |
| Architecture | SAR (Successive Approximation) |
| Input Configuration | True Differential |
| Analog Supply Voltage (AVDD) | 2.7 V to 3.6 V |
| Digital Supply Voltage (DVDD) | 1.8 V to 3.6 V |
| Analog Input Range | Differential, bipolar-capable around common-mode |
| Reference Type | Internal 2.5V (external option supported) |
| Data Interface | Serial SPI/QSPI/MICROWIRE-compatible |
| Corriente de apagado | microampere-level (SHD pin) |
| Temperatura de funcionamiento | -40 C to +85 C |
| Encapsulado | 12-pin TQFN-EP (TQFN-12) |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
Configuración de pines de MAX1070ETC+T
| Pin 1 | AIN+ — Positive differential analog input |
| Pin 2 | AIN- — Negative differential analog input |
| Pin 3 | REF — Reference input/output (internal 2.5V or external reference) |
| Pin 4 | AVDD — Analog supply voltage (+2.7V to +3.6V) |
| Pin 5 | GND — Analog ground |
| Pin 6 | SHDN — Shutdown input (active low, microampere quiescent) |
| Pin 7 | CS — Active-low chip select for serial interface |
| Pin 8 | SCLK — Serial clock input |
| Pin 9 | DOUT — Serial data output |
| Pin 10 | DVDD — Digital supply voltage (+1.8V to +3.6V) |
| Pin 11 | DGND — Digital ground |
| Pin 12 | EP — Exposed pad - internal bond to analog ground, solder to PCB ground plane |
Aplicaciones típicas
MAX1070ETC+T es adecuado para 7 aplicacións: Portable Instrumentation, Industrial Sensor Front-End, Pen Digitizers and Tablets, Battery-Powered Data Loggers, Process Control Loops, Medical Monitoring Devices, Automotive Sensor Interfaces.
Portable Instrumentation
The MAX1070ETC+T is ideal for portable instrumentation due to its 1.5Msps sampling rate and true-differential inputs that reject common-mode noise from hand-held device environments. According to the Maxim datasheet, the device draws only milliwatts of power and supports an external shutdown pin that drops quiescent current to microampere levels, enabling duty-cycled battery operation for handheld multimeters, oscilloscopes, and field data loggers. The internal 2.5V reference and 10-bit resolution are sufficient for general-purpose sensor readout where board space is constrained.
Recomendado
Industrial Sensor Front-End
The MAX1070ETC+T fits industrial sensor front-end designs because its true-differential input stage rejects common-mode noise from motors, switching power supplies, and long factory-floor cable runs. Per the Maxim datasheet, the differential inputs connect directly to bridge sensors, thermocouple amplifiers, and current-sense shunts without external instrumentation amplifiers, simplifying the BOM. The 1.5Msps throughput captures vibration, pressure, and strain-gauge transients with sufficient bandwidth, while the -40C to +85C industrial temperature range handles unconditioned factory cabinets.
Recomendado
Pen Digitizers and Tablets
The MAX1070ETC+T suits pen-digitizer and graphics-tablet designs where 1.5Msps throughput captures the digitizer coil waveforms at sufficient resolution to track stylus position and pressure. According to the Maxim datasheet, the true-differential analog inputs digitize the small differential signals from the tablet sensor matrix with high common-mode rejection, while the SPI-compatible serial output streams conversion results to the host MCU or DSP. Low power consumption and small 12-pin TQFN-EP footprint fit the thin, battery-powered form factor of modern tablets.
Recomendado
Battery-Powered Data Loggers
The MAX1070ETC+T is a strong fit for battery-powered data loggers because it combines 1.5Msps sampling with a shutdown mode that drops quiescent current to microampere levels, as specified in the Maxim datasheet. Designers can duty-cycle the device: power up, take a burst of samples at 1.5Msps, then return to sleep. The 1.8V to 3.6V digital supply aligns with modern low-voltage MCUs, and the differential inputs reject ground-bounce noise from boost converters used in multi-cell battery designs, giving reliable long-term field deployments.
Recomendado
Process Control Loops
The MAX1070ETC+T is well matched to high-speed process control loops requiring 1.5Msps conversion of feedback signals from position sensors, flow meters, or closed-loop motor drives. According to the Maxim datasheet, the true-differential inputs reject the high common-mode transients present in industrial drive cabinets, and the SAR architecture guarantees no pipeline delay, so control-loop firmware receives deterministic conversion latency. The industrial -40C to +85C temperature rating supports unconditioned cabinet mounting without thermal derating.
Recomendado
Medical Monitoring Devices
The MAX1070ETC+T fits compact medical monitoring devices such as pulse oximeters, ECG front-ends, and portable patient monitors that demand low-noise differential conversion in a small package. According to the Maxim datasheet, the true-differential inputs digitize biopotential electrode signals directly, rejecting 50Hz/60Hz mains common-mode interference. The 1.5Msps throughput oversamples the physiological signal bandwidth and improves effective resolution through averaging, while the microampere-level shutdown supports battery-powered ambulatory designs operating across the industrial temperature range.
Recomendado
Automotive Sensor Interfaces
The MAX1070ETC+T is well suited for non-safety-critical automotive sensor interfaces such as cabin climate sensors, battery management telemetry, and body-control modules. According to the Maxim datasheet, the differential inputs reject automotive common-mode noise from load-dump and cranking transients, and the -40C to +85C industrial range handles cabin and under-hood environments. The 1.5Msps rate captures fast sensor transients for engine-control and electric-power-steering feedback loops, while the small 12-pin TQFN-EP fits space-constrained automotive ECU layouts.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MAX1070ETC+T — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MAX1070CTC+ | MAX1070ETC+ | MAX1070CTC+T |
|---|---|---|---|---|
| Package | 12-pin TQFN-EP | 12-pin TQFN-EP (same) | 12-pin TQFN-EP (same) | 12-pin TQFN-EP (same) |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Resolution | 10 bits | 10 bits | 10 bits | 10 bits |
| Sampling Rate (max) | 1.5 Msps | 1.5 Msps | 1.5 Msps | 1.5 Msps |
| Operating Temperature | -40C to +85C | 0C to +70C | -40C to +85C | 0C to +70C |
| Packaging Form | Tape & Reel (+T) | Tray (no +T) | Tray (no +T) | Tape & Reel (+T) |
| Analog Supply Voltage | 2.7V to 3.6V | 2.7V to 3.6V | 2.7V to 3.6V | 2.7V to 3.6V |
| Digital Supply Voltage | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V |
| Input Configuration | True Differential | True Differential | True Differential | True Differential |
Diferenciadores clave
- True-differential input stage in this TQFN pinout (frente a MAX1070CTC+)
- Industrial -40C to +85C temperature grade (frente a MAX1070CTC+)
- 1.5Msps with split AVDD/DVDD rails (frente a MAX1069AEUD+)
Notas de diseño
Decouple AVDD and DVDD separately with a 0.1uF ceramic capacitor placed within 3mm of each supply pin, plus a 10uF bulk capacitor on AVDD. The split-rail design lets DVDD connect directly to a 1.8V host MCU rail while AVDD runs at 3.3V; keep the analog and digital ground returns tied at a single point under the exposed pad to avoid ground-loop coupling into the differential input stage. A ferrite bead between AVDD and DVDD rails is recommended when digital switching noise exceeds -80dBV on the analog supply.
The 12-pin TQFN-EP exposed pad (pin 12) is internally bonded to analog ground and MUST be soldered to a contiguous PCB ground plane for thermal dissipation and low-impedance ground return. According to the Maxim datasheet, failure to solder the EP will degrade input-referred noise and may cause spurious conversion errors at full 1.5Msps rate. Route the differential input traces as a matched-length pair with ground guarding on both sides to preserve common-mode rejection above 1MHz.
Do not drive the AIN+ and AIN- pins beyond AVDD+0.3V or below GND-0.3V - the Maxim datasheet warns that exceeding the Absolute Maximum Ratings can permanently damage the input ESD cells. For bipolar input signals, bias the common-mode voltage at AVDD/2 using a resistor divider buffered by an op-amp, and ensure the differential swing stays within +/-VREF. Tie SHDN high (logic 1) for normal operation; floating the pin is not recommended as the input has no internal pull-up.
The serial interface timing budget must respect the tACQ (acquisition time) and tCONV (conversion time) specifications referenced in the Maxim datasheet. At 1.5Msps, the conversion window is approximately 533ns; an SCLK faster than 20MHz may violate the DOUT hold time. Source-terminate the SCLK trace with a 33-ohm resistor if the MCU-to-ADC trace exceeds 50mm to prevent ringing on the second rising edge during burst reads.
Información de cumplimiento
RoHS and REACH compliant per Maxim Integrated product declaration. Halogen-free per JEDEC JS709B. Not AEC-Q100 qualified - automotive customers should review the MAX107x AEC-Q100 variants separately. Conflict-minerals declaration compliant per Section 1502 of the Dodd-Frank Act.
