Specifications
| Type | Description |
|---|---|
| Part Number | ADS7953 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Inferred Category | Signal_Chain |
| Component Type | Other |
| Package Case | 38-pin TSSOP 9.70 mm x 4.40 mm; 32-pin VQFN 5.00 mm x 5.00 mm; 30-pin TSSOP 7.80 mm x 4.40 mm; 24-pin VQFN 4.00 mm x 4.00 mm |
| Device Family | ADS79xx pin-compatible ADC family; includes ADS7950, ADS7951, ADS7952, ADS7953, ADS7954, ADS7955, ADS7956, ADS7957, ADS7958, ADS7959, ADS7960, ADS7961 |
| ADC Resolution Family | 12-bit, 10-bit, 8-bit product family resolutions |
| 12-Bit Electrical Characteristics Group | ADS7953 listed with ADS7950, ADS7951, ADS7952, ADS7953 |
| Sample Rate | 1 MSPS for serial devices |
| Latency | Zero latency ADC conversion behavior |
| Serial Interface Clock Rate | 20 MHz |
| Analog Supply Voltage Range | 2.7 V to 5.25 V for +VA analog supply |
| I/O Supply Voltage Range | 1.7 V to 5.25 V |
| Input Ranges | 0 V to VREF; 0 V to 2 x VREF software-selectable unipolar ranges |
| Channel Selection Modes | Auto mode and manual mode, software-selectable |
| Channel Count Options | 4, 8, 12, 16 channels in ADS79xx family options |
| Footprint Compatibility | 4-channel and 8-channel devices share same footprint; 12-channel and 16-channel devices share same footprint |
| Alarm Thresholds | Two programmable alarm levels per channel |
| GPIO Count in TSSOP Package | 4 individually configurable GPIOs |
| GPIO Count in VQFN Package | 1 individually configurable GPIO |
| Typical Power Dissipation | 14.5 mW at +VA = 5 V, +VBD = 3 V, 1 MSPS |
| Power-Down Current | 1 uA in power-down mode |
| Input Bandwidth | 47 MHz at -3 dB |
| Converter Architecture | Capacitor-based SAR ADC with inherent sample-and-hold |
| Input Sampling Event | Input signal sampled on falling edge of CS |
| Serial Control Signals | CS and SCLK |
| Serial Data Signals | SDO and SDI |
| Package Option | 38-pin TSSOP for 16-channel and 12-channel devices |
| Package Option | 32-pin VQFN for 16-channel and 12-channel devices |
| Package Option | 30-pin TSSOP for 4-channel and 8-channel devices |
| Package Option | 24-pin VQFN for 4-channel and 8-channel devices |
| Datasheet Status | request_only |
Product Overview
The ADS7953 is a Texas Instruments multichannel serial SAR ADC in the ADS79xx pin-compatible family. The family includes ADS7950 through ADS7961 and spans 12-bit, 10-bit, and 8-bit resolution groups. ADS7953 is listed with ADS7950, ADS7951, and ADS7952 in the 12-bit electrical characteristics group.
The device family supports 1 MSPS operation with zero-latency conversion behavior and a 20 MHz serial interface. The converter architecture is a capacitor-based SAR ADC with an inherent sample-and-hold. Input signals are sampled on the falling edge of CS, and the serial interface uses CS, SCLK, SDO, and SDI signals.
The analog supply range is 2.7 V to 5.25 V, while the I/O supply range is 1.7 V to 5.25 V. Software-selectable unipolar input ranges are 0 V to VREF and 0 V to 2 x VREF, with auto and manual channel selection. The family provides 4, 8, 12, and 16 channel options, programmable alarm levels per channel, and GPIO availability that depends on TSSOP or VQFN packaging.
Key Features
- ADS79xx pin-compatible ADC family support
- 12-bit electrical characteristics group includes ADS7953
- 1 MSPS serial conversion sample rate
- Zero-latency ADC conversion behavior
- 20 MHz serial interface clock rate
- 2.7 V to 5.25 V analog supply
- 1.7 V to 5.25 V I/O supply
- Software-selectable 0 V to VREF input range
- Software-selectable auto and manual channel selection
- Two programmable alarm levels per channel
- Capacitor-based SAR ADC with sample-and-hold
- Power-down current specified at 1 uA
Typical Applications
- Multichannel data acquisition
- Serial ADC subsystems
- Alarm-monitored analog inputs
- GPIO-assisted signal-chain control
- Low-power sampled systems
- TSSOP signal-chain assemblies
- VQFN signal-chain assemblies
Procurement Notes
When requesting a quote for ADS7953, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What type of converter is the ADS7953?
The ADS7953 is a Texas Instruments multichannel serial SAR ADC. It is part of the ADS79xx pin-compatible ADC family and is listed in the 12-bit electrical characteristics group with ADS7950, ADS7951, and ADS7952.
What serial interface signals does ADS7953 use?
The extracted datasheet facts identify CS and SCLK as serial control signals, with SDO and SDI used for serial data. The serial interface clock rate is specified as 20 MHz.
What supply ranges are specified for this device family?
The analog supply range is 2.7 V to 5.25 V for +VA. The I/O supply range is 1.7 V to 5.25 V, supporting separate analog and interface supply domains within the stated limits.
Which input ranges and channel modes are available?
The family supports software-selectable unipolar input ranges of 0 V to VREF and 0 V to 2 x VREF. Channel selection can also be software-selected between auto mode and manual mode.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.