Texas Instruments ADS58H40IZCR

Overview

ADS58H40IZCR from Texas Instruments is a quad-channel, 14-bit, 250-MSPS analog-to-digital converter optimized for wideband receiver and feedback applications in multi-carrier cellular infrastructure. It delivers 70.5 dBFS SNR in 90-MHz bandwidth with SNRBoost3G+, 85 dBc SFDR at 170 MHz IF, and DDR LVDS digital output. Used in active antenna arrays and base station transceivers requiring high linearity and low power.

For engineers reviewing the ADS58H40IZCR datasheet, ADS58H40IZCR pinout, ADS58H40IZCR application, or ADS58H40IZCR equivalent, key selection considerations include its dual-block configurable operating modes (11-bit/11-bit SNRBoost3G+/14-bit burst), 144-pin BGA package, thermal resistance (θJA = 35.9°C/W), and support for 90-MHz real-time signal bands with deterministic latency of 13–17 output clock cycles.

Technical Context

The ADS58H40IZCR integrates four 14-bit ADC cores split into two independent processing blocks (A/B and C/D), each configurable for 11-bit standard, 11-bit SNRBoost3G+ (45/90 MHz BW), or 14-bit burst mode. Its digital processing includes on-chip SNRBoost3G+ signal enhancement, digital gain/offset correction, and over-range detection.

It employs differential LVDS DDR output interface with dedicated clock pairs per block (CLKOUTABP/M and CLKOUTCDP/M), supports 184–250 MSPS sampling, and features hardware-triggered burst mode with HIRES and TRIG_RDY status signaling for time-sensitive acquisition sequences.

Key Specifications

Pinout & Package

ADS58H40IZCR uses a 144-pin BGA package (ZCR, 10 mm × 10 mm, 0.8-mm pitch) with exposed thermal pad. Pin functions are validated per TI SBAS589B datasheet Rev. November 2012.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed receiver ADC applications.

Compared with ADS58C23IRGCT and AD9694BCPZ-500, the ADS58H40IZCR uniquely combines quad-channel 250-MSPS operation, on-chip SNRBoost3G+ for 90-MHz bands, and deterministic LVDS timing - making it optimal for cost-sensitive, thermally constrained cellular infrastructure where 70.5 dBFS SNR in 90-MHz bandwidth is critical.

Availability

ADS58H40IZCR is available at Aetrix Electronics and suitable for multi-carrier GSM base stations, active antenna arrays, communications test equipment, and multi-mode cellular infrastructure requiring stable component supply across long production lifecycles.

Supply support for ADS58H40IZCR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in high-performance data converters and signal chain solutions.

The ADS58H40IZCR belongs to TI's high-speed receiver ADC product line, designed specifically for cellular infrastructure applications demanding high linearity, low power, and flexible digital processing in compact form factors.

FAQ

What are the supported operating modes of the ADS58H40IZCR?

The ADS58H40IZCR supports three configurable modes per ADC block: 11-bit standard, 11-bit SNRBoost3G+ (with 45-MHz or 90-MHz bandwidth), and 14-bit burst mode. Each of the two blocks (A/B and C/D) can be independently configured, allowing mixed-mode operation. Mode selection is controlled via SPI register writes, and all modes operate at up to 250 MSPS. The ADS58H40IZCR datasheet specifies register addresses and initialization sequences for each mode.

How does SNRBoost3G+ improve performance in the ADS58H40IZCR?

SNRBoost3G+ in the ADS58H40IZCR applies on-chip digital signal processing to enhance SNR within a defined bandwidth (up to 90 MHz) while maintaining 11-bit output resolution and 250-MSPS throughput. At 170 MHz IF, it achieves 70.5 dBFS SNR - a ~3 dB improvement over standard 11-bit mode. This eliminates the need for external digital filtering and preserves real-time data flow, making the ADS58H40IZCR especially effective in wideband cellular receiver chains.

What is the latency behavior of the ADS58H40IZCR across different modes?

The ADS58H40IZCR exhibits deterministic latency dependent on operating mode: 10 cycles in 11-bit mode, 13 cycles with digital gain enabled, 14 cycles with gain + offset correction, 13 cycles with SNRBoost3G+ (90-MHz BW) alone, and 17 cycles with SNRBoost3G+ plus gain and offset correction. Latency is measured in output clock cycles and is consistent across temperature and supply variations. This predictability is critical for digital predistortion feedback loops using the ADS58H40IZCR.

Does the ADS58H40IZCR support hardware-triggered burst acquisition?

Yes, the ADS58H40IZCR supports hardware-triggered 14-bit burst mode via the TRIG_EN pin. When asserted, it initiates a high-resolution acquisition sequence; HIRES goes high during burst output, and TRIG_RDY signals readiness for the next trigger. This feature enables precise time-gated sampling synchronized to RF transmit events in TDD systems - a capability confirmed in the ADS58H40IZCR functional block diagram and timing specifications.

What thermal management guidance applies to the ADS58H40IZCR?

The ADS58H40IZCR has a junction-to-ambient thermal resistance (θJA) of 35.9°C/W in its 144-pin ZCR BGA package. With total power dissipation of 1.55 W (11-bit mode), junction temperature rise above ambient is ~55°C - requiring a PCB with adequate copper area and thermal vias under the exposed pad. TI recommends a 6×6 array of 0.3-mm thermal vias to an internal ground plane. Thermal derating begins above +85°C ambient, and maximum rated junction temperature is +125°C per the ADS58H40IZCR absolute maximum ratings table.