ADS7038 Texas Instruments Integrated Circuit (Quad Flat No-Lead) In Stock
ADS7038 is an 8-channel 12-bit SAR ADC with 1 Msps throughput and SPI serial interface by Texas Instruments in a 16-pin WQFN package. Key specs: 12-bit resolution, 1 Msps sample rate, 8 single-ended or 4 differential inputs. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Quad Flat No-Lead
- Pin Count
- 17
- Lifecycle
- ACTIVE
- Datasheet
- ADS7038 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 12-bit resolution at 1 Msps enables simultaneous monitoring of 8 analog channels in industrial and medical acquisition systems
- SPI serial interface with 16-pin WQFN exposed-pad package minimizes PCB area in compact multi-channel data loggers
- 8 flexible input channels configurable as single-ended or differential for versatile sensor interface designs
Applications
ADS7038 is designed for multi-channel data acquisition in industrial monitoring, motor control, and precision instrumentation systems that require simultaneous sampling at 1 Msps across up to 8 analog inputs. Its 12-bit resolution and SPI interface make it a natural fit for battery-powered portable instruments and embedded controllers where ADC channels are shared among temperature sensors, current monitors, and analog control signals. The compact 16-pin WQFN package supports dense PCB designs in medical devices and test equipment.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for ADS7038:
suggested
suggested
ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Serial Access, PQCC16
ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Serial Access, PQCC16
ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Serial Access, PQCC16
ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PQCC16
Frequently Asked Questions
How many analog input channels does ADS7038 support and can they be configured as differential inputs?
ADS7038 provides 8 input channels configurable as 8 single-ended inputs referred to a common ground or 4 differential pairs for noise-immune measurements of bridge sensors and current shunts. In differential mode, the common-mode rejection suppresses noise coupled onto long cable runs, allowing signal acquisition from sensors located 1 m or more from the ADC without significant accuracy loss.
What sample rate does ADS7038 achieve and how does that benefit real-time industrial control loops?
ADS7038 achieves 1 Msps total throughput across all 8 channels, delivering 125 ksps per channel when scanning all inputs sequentially. A 125 ksps per-channel rate provides 8 µs latency per conversion, fast enough for closed-loop current control in motor drives and power converters that require feedback update rates above 10 kHz for stable regulation.
How does ADS7038's 12-bit resolution compare to 10-bit alternatives for precision current or voltage monitoring?
ADS7038's 12-bit resolution provides 4096 quantization levels versus 1024 for a 10-bit ADC, giving a least-significant-bit (LSB) size of roughly 0.8 mV on a 3.3 V reference. This 4× improvement over 10-bit accuracy is significant for current monitoring where a shunt resistor of 10 mΩ carrying 10 A produces a 100 mV signal — 12 bits resolves 25 µA steps versus 100 µA steps with 10 bits.
For a new embedded design, what advantages does ADS7038's 16-pin WQFN package offer over a larger SSOP or TSSOP alternative?
The 16-pin WQFN measures approximately 3 mm × 3 mm with an exposed thermal pad, occupying roughly 9 mm² of board area compared to 16-pin SSOP packages at approximately 30 mm², a 70% PCB footprint reduction. The exposed pad also aids thermal dissipation and ground connection, reducing analog noise coupling into the ADC reference by lowering lead inductance below 0.5 nH.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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