ECRI Microelectronics

HIF 10

1. Features (for outside view, see Fig. 1) 

The clock frequency can reach 256kHz 

Externally connected adjustable sampling resistance for constant current source
The range of power supply: ±12~±18V
Adjustable zero position

2. Scope of application of HIF 10

A/D conversion circuit in inertial navigation system

3. Description of HIF 10

HIF10 current/frequency converter is one of the kernel circuits of the inertial navigation system, which realizes A/D conversion function. Critical indexes such as nonlinear temperature drift and zero stability of this product can reach a higher level.
This product is made by the thick-film hybrid integrated process and is totally sealed in a metal case. Both the design and manufacture of the product satisfy the requirements of GJB2438A-2002 “General specification for hybrid integrated circuits” and specific specification of the product.

4. Electrical performance (Table 1 and 2) of HIF 10

Table 1  Rated conditions and recommended conditions

Absolute max. rated value

Power voltage: ±18V

Voltage of constant current source: 18V

Digital power voltage: 6V

Storage temperature: -55~125℃

Recommended operating conditions

Power voltage: ±15±0.05V

Voltage of constant current source: ±15±0.05V

Digital supply power voltage: 5±0.05V

Current/Frequency Converter (HIF 10)Current/Frequency Converter (HIF 10)
Table 4  Case materials

Case model


Header plating


Covering plating


Pin plating

Sealing style






Iron/ nickel alloy





Compression seal

Note: temperature of the solder pins within 10s shall not exceed 300℃.

Current/Frequency Converter (HIF 10)

Application notes of HIF 10

  • Upon power-on, be sure to correctly connect the positive and negative pole of the power supply to ensure correct power supply for fear of burning.
  • Upon assembly, the bottom of the product shall fit to the circuit board closely so as to avoid damage of pins, and shockproof provision shall be added, if necessary.
  • Do not bend the pinouts to prevent the insulator from breaking, which affects the sealing property.
  • The dynamic parameters of meter head produced by different users are different, the user is required to provide meter head by himself to achieve the optimum commissioning state.
  • When the user places an order for the product, detailed electric performance indexes shall refer to the relevant enterprise standard.
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